Prof. Masud Mansuripur Profile

Prof. Masud Mansuripur

Professor of Optical Sciences at Wyant College of Optical Sciences

SPIE Involvement:

Conference Program Committee | Author | Instructor

Area of Expertise:

Optical data storage , Electromagnetic theory , Classical optics; diffraction theory , Radiation pressure and photon momentum , Magneto-optical materials , Thin film optics (theory and measurements)

Websites:

Company Website

Profile Summary

Masud Mansuripur is professor and Chair of Optical Data Storage at the College of Optical Sciences of the University of Arizona in Tucson. He is the author of four books and over 250 technical papers in peer-reviewed journals. Dr. Mansuripur's areas of interest include optical and magnetic data storage, electromagnetic theory, information theory, and problems associated with radiation pressure and photon momentum inside material media.

Publications (90)

Proceedings Article | 4 October 2024 Presentation + Paper

Presentation + Paper

Rotational symmetry of space, rotation operators, conservation laws, and spin and orbital angular momenta in quantum mechanics

Masud Mansuripur

Proceedings Volume 13119, 1311902 (2024) https://doi.org/10.1117/12.3028583

KEYWORDS: Angular momentum, Magnetism, Quantum particles, Hydrogen, Quantum spin, Quantum mechanics

Read Abstract +

Quantization of spin and orbital angular momenta in standard quantum mechanics is rooted in the fundamental rotational symmetry of space in conjunction with the results of experiments on atomic and subatomic particles conducted with the Stern-Gerlach apparatus. We explain some of the most important features of spin and orbital angular momenta as inescapable consequences of elementary Stern-Gerlach experiments viewed in light of the rotational symmetry of space. The rotation operator is first derived for spin-½ particles, then extended to spin-1 particles by treating the case of a hydrogen atom in its ground state, where the spin of the proton combines with that of the electron to create a spin-1 triplet state. Along the way, we examine the evolution of a particle’s spin state under an applied magnetic field, where the interaction energy arises from the existence of a magnetic dipole moment for each particle in proportion to its spin angular momentum. Whereas a constant magnetic field B₀ causes the particle’s magnetic moment to gyrate around the direction of B₀, it will be seen that the presence of a small oscillating magnetic field perpendicular to B₀ brings about the so-called Rabi oscillations, which involve periodic flippings of the particle’s spin orientation. In the case of a hydrogen atom in its ground state, the interaction between the magnetic dipole moments of the proton and the electron splits the ground state between a lower energy singlet having a net angular momentum of zero (spin-0 state), and a higher energy triplet having a total angular momentum of ħ (spin-1 state). This hyperfine splitting is the source of the well-known 21-cm line observed in the spectrum of the hydrogen atom, which arises from transitions between the atom’s singlet and triplet states. In the final section, we put forward an argument (originally made by Richard Feynman) that ties the rotational symmetry of space to the conservation of angular momentum in quantum mechanics. The argument is, in fact, quite general, enabling one to deduce other conservation laws from various inherent symmetries of quantum mechanical systems.

Proceedings Article | 2 October 2024 Presentation + Paper

Presentation + Paper

Quantum fluctuations and noise in interferometry and photodetection: applications in optical sensing and micromanipulation

Masud Mansuripur

Proceedings Volume 13112, 1311209 (2024) https://doi.org/10.1117/12.3028580

KEYWORDS: Photodetectors, Sensors, Mach Zehnder interferometers, Homodyne detection

Read Abstract +

Proceedings Article | 30 September 2024 Presentation + Paper

Presentation + Paper

Fundamental principles and applications of nonlinear optical phenomena in classical and quantum electrodynamics

Masud Mansuripur

Proceedings Volume 13126, 1312605 (2024) https://doi.org/10.1117/12.3028528

KEYWORDS: Quantum phenomena, Nonlinear optics, Quantum noise, Quantum signals, Optical parametric amplifiers

Read Abstract +

Proceedings Article | 8 March 2024 Presentation + Paper

Presentation + Paper

Does one still need to shut up and calculate?

Masud Mansuripur

Proceedings Volume 12895, 1289506 (2024) https://doi.org/10.1117/12.3021813

KEYWORDS: Photon polarization, Parabolic mirrors, Quantum amplitude, Superposition, Single photon detectors

Read Abstract +

Proceedings Article | 5 October 2023 Presentation + Paper

Presentation + Paper

Electromagnetic angular momentum of quantized wavepackets in free space

Masud Mansuripur

Proceedings Volume 12649, 126490A (2023) https://doi.org/10.1117/12.2675775

KEYWORDS: Angular momentum, Electromagnetism, Quantum fields

Read Abstract +

Proceedings Article | 5 October 2023 Presentation + Paper

Presentation + Paper

On the quantum theory of light interacting with nano-materials

Masud Mansuripur

Proceedings Volume 12663, 1266303 (2023) https://doi.org/10.1117/12.2677807

KEYWORDS: Photons, Spontaneous emission, Scattering, Rayleigh scattering, Thomson scattering, Absorption

Read Abstract +

Proceedings Article | 28 September 2023 Presentation + Paper

Presentation + Paper

Spin and orbital angular momenta of electromagnetic waves in classical and quantum electrodynamics

Masud Mansuripur

Proceedings Volume 12656, 1265604 (2023) https://doi.org/10.1117/12.2675779

KEYWORDS: Angular momentum, Electromagnetic radiation, Electromagnetism, Quantum electrodynamics

Read Abstract +

Proceedings Article | 28 June 2023 Open Access

Open Access

Paper

Optical Sciences Winter School for enabling future students in optics society

Daewook Kim, Brandon Chalifoux, Lars Furenlid, Poul Jessen, Jason Jones, John Koshel, Channel Lemon, Masud Mansuripur, Euan McLeod

Proceedings Volume 12723, 127231D (2023) https://doi.org/10.1117/12.2670616

KEYWORDS: Photonics, COVID 19, Engineering, Industry, Telescopes, Channel projecting optics, Scanning transmission electron microscopy, Optical components, Optical communications, Observatories

Read Abstract +

Proceedings Article | 3 October 2022 Presentation + Paper

Presentation + Paper

Spin-1 photons, spin-1/2 electrons, Bell's inequalities, and Feynman's special perspective on quantum mechanics

Masud Mansuripur

Proceedings Volume 12205, 122050B (2022) https://doi.org/10.1117/12.2633646

KEYWORDS: Photons, Particles, Quantum mechanics, Electrons, Polarization, Poincaré sphere, Superposition

Read Abstract +

Proceedings Article | 3 October 2022 Presentation + Paper

Presentation + Paper

Insights into the behavior of certain optical systems gleaned from Feynman's approach to quantum electrodynamics

Masud Mansuripur

Proceedings Volume 12197, 1219703 (2022) https://doi.org/10.1117/12.2632902

KEYWORDS: Scattering, Polarization, Single photon, Photon polarization, Superposition, Interferometers

Read Abstract +

Proceedings Article | 3 October 2022 Presentation + Paper

Presentation + Paper

Linear and angular momenta of photons in the context of "which path" experiments of quantum mechanics

Masud Mansuripur

Proceedings Volume 12198, 1219807 (2022) https://doi.org/10.1117/12.2632866

KEYWORDS: Photons, Interferometers, Single photon, Scattering, Quantum mechanics, Sagnac interferometers, Photon polarization

Read Abstract +

Proceedings Article | 9 September 2021 Open Access

Open Access

Presentation + Paper

Ubiquity of Fourier transformation in optical sciences

Masud Mansuripur

Proceedings Volume 11813, 118130I (2021) https://doi.org/10.1117/12.2567836

KEYWORDS: Fourier transforms, Magnetism, Convolution, Free space, Spherical lenses, Electromagnetism, Superposition, Maxwell's equations, Digital signal processing, Analog electronics

Read Abstract +

Proceedings Article | 3 August 2021 Presentation + Paper

Presentation + Paper

Electromagnetic force and torque derived from a Lagrangian in conjunction with the Maxwell-Lorentz equations

Masud Mansuripur

Proceedings Volume 11798, 1179810 (2021) https://doi.org/10.1117/12.2595187

KEYWORDS: Electromagnetism, Quantum electrodynamics

Read Abstract +

Proceedings Article | 2 August 2021 Presentation + Paper

Presentation + Paper

Fresnel reflection and transmission in the presence of gain media

Masud Mansuripur, Per Jakobsen

Proceedings Volume 11797, 117971G (2021) https://doi.org/10.1117/12.2595188

KEYWORDS: Transform theory, Fourier transforms, Interfaces, Electromagnetism, Superposition

Read Abstract +

Proceedings Article | 25 August 2020 Presentation + Paper

Presentation + Paper

Electromagnetic radiation and the self torque of an oscillating magnetic dipole

Masud Mansuripur, Per Jakobsen

Proceedings Volume 11462, 114620W (2020) https://doi.org/10.1117/12.2569137

KEYWORDS: Spherical lenses, Electromagnetic radiation, Oscillators, Particles, Solids, Electromagnetism, Free space, Resistance

Read Abstract +

Proceedings Article | 21 August 2020 Presentation + Paper

Presentation + Paper

Dispersion of electromagnetic waves in linear, homogeneous, and isotropic media

M. Mansuripur

Proceedings Volume 11479, 1147903 (2020) https://doi.org/10.1117/12.2567846

KEYWORDS: Wave propagation, Dispersion, Waveguides, Dielectrics

Read Abstract +

Proceedings Article | 20 August 2020 Presentation + Paper

Presentation + Paper

Energy, linear momentum, and spin and orbital angular momenta of circularly polarized Laguerre-Gaussian wave-packets

Masud Mansuripur

Proceedings Volume 11463, 114630V (2020) https://doi.org/10.1117/12.2569131

KEYWORDS: Wave propagation, Bessel functions, Polarization, Paraxial approximations, Bessel beams, Gaussian beams

Read Abstract +

Proceedings Article | 20 August 2020 Presentation + Paper

Presentation + Paper

An exact derivation of the Thomas precession rate using the Lorentz transformation

Masud Mansuripur

Proceedings Volume 11470, 114703U (2020) https://doi.org/10.1117/12.2569025

KEYWORDS: Magnetism, Gyroscopes, Theory of relativity, Special relativity, Spin dynamics, Hydrogen

Read Abstract +

Proceedings Article | 16 September 2019 Presentation + Paper

Presentation + Paper

Spin-orbit coupling in the hydrogen atom, the Thomas precession, and the exact solution of Dirac's equation

Masud Mansuripur

Proceedings Volume 11090, 110901X (2019) https://doi.org/10.1117/12.2529885

KEYWORDS: Hydrogen, Magnetism, Quantum mechanics, Zeeman effect

Read Abstract +

Proceedings Article | 9 September 2019 Presentation + Paper

Presentation + Paper

Thought experiments that shed light on the nature of optical linear and angular momenta

Masud Mansuripur

Proceedings Volume 11083, 110831Y (2019) https://doi.org/10.1117/12.2529901

KEYWORDS: Particles, Dielectrics, Glasses, Electromagnetism, Spherical lenses

Read Abstract +

Proceedings Article | 1 February 2019 Presentation + Paper

Presentation + Paper

Self-field, radiated energy, and radiated linear momentum of an accelerated point charge: part 2

Masud Mansuripur

Proceedings Volume 10926, 109260O (2019) https://doi.org/10.1117/12.2511214

KEYWORDS: Electromagnetism, Electrodynamics, Radiation effects

Read Abstract +

Proceedings Article | 20 September 2018 Presentation + Paper

Presentation + Paper

Self-field, radiated energy, and radiated linear momentum of an accelerated point charge

Masud Mansuripur

Proceedings Volume 10732, 1073230 (2018) https://doi.org/10.1117/12.2322082

KEYWORDS: Electrodynamics, Electrons, Electromagnetism

Read Abstract +

SPIE Journal Paper | 14 September 2018

Energy, linear momentum, and angular momentum exchange between an electromagnetic wave-packet and a small particle

Masud Mansuripur

JNP, Vol. 13, Issue 01, 012503, (September 2018) https://doi.org/10.1117/12.10.1117/1.JNP.13.012503

KEYWORDS: Particles, Spherical lenses, Electromagnetism, Atmospheric particles, Dielectrics, Magnetism, Fourier transforms, Electrodynamics, Free space, Polarization

Read Abstract +

Proceedings Article | 7 September 2018 Presentation + Paper

Presentation + Paper

Energy, linear momentum, and angular momentum exchange between an electromagnetic wave-packet and a small particle

Masud Mansuripur

Proceedings Volume 10723, 107230R (2018) https://doi.org/10.1117/12.2322071

KEYWORDS: Electromagnetism, Wave propagation, Dielectrics, Electrodynamics

Read Abstract +

Proceedings Article | 24 April 2018 Paper

Paper

Energy, linear momentum, and angular momentum exchange between an electromagnetic wave-packet and a small particle

Masud Mansuripur

Proceedings Volume 10712, 107121E (2018) https://doi.org/10.1117/12.2317336

KEYWORDS: Electromagnetism, Dielectrics, Electrodynamics, Wave propagation

Read Abstract +

Proceedings Article | 22 February 2018 Presentation + Paper

Presentation + Paper

Thermodynamics of radiation pressure and photon momentum (Part 2)

Masud Mansuripur

Proceedings Volume 10549, 105490X (2018) https://doi.org/10.1117/12.2286300

KEYWORDS: Thermodynamics, Photodetectors, Resistors, Electronic circuits

Read Abstract +

Proceedings Article | 19 September 2017 Presentation

Presentation

Angular momentum exchange between light and small particles (Conference Presentation)

Masud Mansuripur

Proceedings Volume 10347, 1034710 (2017) https://doi.org/10.1117/12.2273225

KEYWORDS: Particles, Radiation effects, Dielectrics, Light-matter interactions, Spherical lenses, Refractive index, Resistance, Electromagnetic theory

Read Abstract +

Proceedings Article | 7 September 2017 Presentation + Paper

Presentation + Paper

Nature of the electromagnetic force between classical magnetic dipoles

Masud Mansuripur

Proceedings Volume 10357, 103570R (2017) https://doi.org/10.1117/12.2273216

KEYWORDS: Magnetism, Electromagnetism, Electrodynamics, Nanostructures

Read Abstract +

Proceedings Article | 25 August 2017 Presentation + Paper

Presentation + Paper

Thermodynamics of radiation pressure and photon momentum

Masud Mansuripur, Pin Han

Proceedings Volume 10347, 103471Y (2017) https://doi.org/10.1117/12.2274589

KEYWORDS: Thermodynamics, Electromagnetism, Black bodies, Quantum physics, Optical resonators, Electrodynamics, Maxwell's equations, Electromagnetic theory

Read Abstract +

Proceedings Article | 9 November 2016 Presentation

Presentation

Light-matter interaction: conversion of the optical energy and momentum to mechanical vibrations and phonons (Conference Presentation)

Masud Mansuripur

Proceedings Volume 9918, 99180M (2016) https://doi.org/10.1117/12.2238472

KEYWORDS: Phonons, Photons, Electromagnetism, Electromagnetic radiation, Light-matter interactions, Refraction, Absorption, Acoustics, Metamaterials, Current controlled current source

Read Abstract +

Proceedings Article | 26 September 2016 Presentation + Paper

Presentation + Paper

Leaky modes of dielectric cavities

Masud Mansuripur, Miroslav Kolesik, Per Jakobsen

Proceedings Volume 9931, 99310B (2016) https://doi.org/10.1117/12.2237904

KEYWORDS: Spherical lenses, Dielectrics, Optical spheres, Refractive index, Glasses, Solids, Superposition, Bessel functions, Particles, Absorption

Read Abstract +

Proceedings Article | 23 September 2016 Presentation + Paper

Presentation + Paper

Ultra-high aspect ratio copper nanowires as transparent conductive electrodes for dye sensitized solar cells

Zhaozhao Zhu, Trent Mankowski, Ali Sehpar Shikoh, Farid Touati, Mohieddine Benammar, Masud Mansuripur, Charles Falco

Proceedings Volume 9936, 993603 (2016) https://doi.org/10.1117/12.2237406

KEYWORDS: Electrodes, Copper, Solar cells, Nanowires, Titanium dioxide, Dye sensitized solar cells, Thin films, Technetium, Thin film coatings, Platinum

Read Abstract +

SPIE Journal Paper | 1 April 2016

Sol-gel deposited aluminum-doped and gallium-doped zinc oxide thin-film transparent conductive electrodes with a protective coating of reduced graphene oxide

Zhaozhao Zhu, Trent Mankowski, Kaushik Balakrishnan, Ali Sehpar Shikoh, Farid Touati, Mohieddine Benammar, Masud Mansuripur, Charles Falco

JNP, Vol. 10, Issue 02, 026001, (April 2016) https://doi.org/10.1117/12.10.1117/1.JNP.10.026001

KEYWORDS: Thin films, Zinc oxide, Sol-gels, Plasma treatment, Coating, Electrodes, Oxides, Graphene, Resistance, Transmittance

Read Abstract +

Proceedings Article | 13 February 2016 Paper

Paper

Light-matter interaction: conversion of optical energy and momentum to mechanical vibrations and phonons

Masud Mansuripur

Proceedings Volume 9755, 97552I (2016) https://doi.org/10.1117/12.2218232

KEYWORDS: Phonons, Electromagnetism, Light-matter interactions, Refraction, Absorption, Photons, Dielectrics, Wave propagation, Solids, Fourier transforms, Mirrors, Antireflective coatings, Refractive index, Motion analysis

Read Abstract +

Proceedings Article | 5 October 2015 Presentation

Presentation

Origin of the spin-orbit interaction (Presentation Recording)

Gianfranco Spavieri, Masud Mansuripur

Proceedings Volume 9551, 95510P (2015) https://doi.org/10.1117/12.2187490

KEYWORDS: Hydrogen, Chemical species, Magnetism, Quantum mechanics, Video, Spintronics, Current controlled current source

Read Abstract +

Proceedings Article | 5 September 2015 Presentation + Paper

Presentation + Paper

Sol-gel deposition and plasma treatment of intrinsic, aluminum-doped, and gallium-doped zinc oxide thin films as transparent conductive electrodes

Zhaozhao Zhu, Trent Mankowski, Kaushik Balakrishnan, Ali Sehpar Shikoh, Farid Touati, Mohieddine Benammar, Masud Mansuripur, Charles Falco

Proceedings Volume 9561, 956109 (2015) https://doi.org/10.1117/12.2186144

KEYWORDS: Zinc oxide, Thin films, Plasma treatment, Sol-gels, Transmittance, Scanning electron microscopy, Plasma, Thin film deposition, Electrodes, Annealing

Read Abstract +

Proceedings Article | 25 August 2015 Presentation + Paper

Presentation + Paper

Energy and linear and angular momenta in simple electromagnetic systems

Masud Mansuripur

Proceedings Volume 9548, 95480K (2015) https://doi.org/10.1117/12.2187550

KEYWORDS: Magnetism, Spherical lenses, Bessel beams, Particles, Electromagnetism, Electrodynamics, Maxwell's equations, Free space, Polarization, Light wave propagation

Read Abstract +

Proceedings Article | 25 August 2015 Presentation + Paper

Presentation + Paper

Tutorial: opto-mechanical cooling by the back-action of cavity photons

Masud Mansuripur

Proceedings Volume 9548, 954808 (2015) https://doi.org/10.1117/12.2188922

KEYWORDS: Mirrors, Photons, Fabry–Perot interferometers, Resonators, Dielectric mirrors, Dielectrics, Free space, Nanofabrication, Optomechanical design, Electrodynamics

Read Abstract +

Proceedings Article | 8 February 2015 Paper

Paper

Electric and magnetic dipoles in the Lorentz and Einstein-Laub formulations of classical electrodynamics

Masud Mansuripur

Proceedings Volume 9370, 93700U (2015) https://doi.org/10.1117/12.2084993

KEYWORDS: Magnetism, Particles, Electrons, Scattering, Electrodynamics, Maxwell's equations, Polarization, Electromagnetism, Chemical species, Ferromagnetics

Read Abstract +

The classical theory of electrodynamics cannot explain the existence and structure of electric and magnetic dipoles, yet it incorporates such dipoles into its fundamental equations, simply by postulating their existence and properties, just as it postulates the existence and properties of electric charges and currents. Maxwell’s macroscopic equations are mathematically exact and self-consistent differential equations that relate the electromagnetic (EM) field to its sources, namely, electric charge-density 𝜌𝜌free, electric current-density 𝑱𝑱free, polarization 𝑷𝑷, and magnetization 𝑴𝑴. At the level of Maxwell’s macroscopic equations, there is no need for models of electric and magnetic dipoles. For example, whether a magnetic dipole is an Amperian current-loop or a Gilbertian pair of north and south magnetic monopoles has no effect on the solution of Maxwell’s equations. Electromagnetic fields carry energy as well as linear and angular momenta, which they can exchange with material media—the seat of the sources of the EM field—thereby exerting force and torque on these media. In the Lorentz formulation of classical electrodynamics, the electric and magnetic fields, 𝑬𝑬 and 𝑩𝑩, exert forces and torques on electric charge and current distributions. An electric dipole is then modeled as a pair of electric charges on a stick (or spring), and a magnetic dipole is modeled as an Amperian current loop, so that the Lorentz force law can be applied to the corresponding (bound) charges and (bound) currents of these dipoles. In contrast, the Einstein-Laub formulation circumvents the need for specific models of the dipoles by simply providing a recipe for calculating the force- and torque-densities exerted by the 𝑬𝑬 and 𝑯𝑯 fields on charge, current, polarization and magnetization. The two formulations, while similar in many respects, have significant differences. For example, in the Lorentz approach, the Poynting vector is 𝑺𝑺𝐿𝐿 = 𝜇𝜇0 −1𝑬𝑬 × 𝑩𝑩, and the linear and angular momentum densities of the EM field are 𝓹𝓹𝐿𝐿 = 𝜀𝜀0𝑬𝑬 × 𝑩𝑩 and 𝓛𝓛𝐿𝐿 = 𝒓𝒓 × 𝓹𝓹𝐿𝐿, whereas in the Einstein-Laub formulation the corresponding entities are 𝑺𝑺𝐸𝐸𝐸𝐸= 𝑬𝑬 × 𝑯𝑯, 𝓹𝓹𝐸𝐸𝐸𝐸= 𝑬𝑬 × 𝑯𝑯⁄𝑐𝑐2, and 𝓛𝓛𝐸𝐸𝐸𝐸= 𝒓𝒓 × 𝓹𝓹𝐸𝐸𝐸𝐸. (Here 𝜇𝜇0 and 𝜀𝜀0 are the permeability and permittivity of free space, 𝑐𝑐 is the speed of light in vacuum, 𝑩𝑩 = 𝜇𝜇0𝑯𝑯 + 𝑴𝑴, and 𝒓𝒓 is the position vector.) Such differences can be reconciled by recognizing the need for the so-called hidden energy and hidden momentum associated with Amperian current loops of the Lorentz formalism. (Hidden entities of the sort do not arise in the Einstein-Laub treatment of magnetic dipoles.) Other differences arise from over-simplistic assumptions concerning the equivalence between free charges and currents on the one hand, and their bound counterparts on the other. A more nuanced treatment of EM force and torque densities exerted on polarization and magnetization in the Lorentz approach would help bridge the gap that superficially separates the two formulations. Atoms and molecules may collide with each other and, in general, material constituents can exchange energy, momentum, and angular momentum via direct mechanical interactions. In the case of continuous media, elastic and hydrodynamic stresses, phenomenological forces such as those related to exchange coupling in ferromagnets, etc., subject small volumes of materials to external forces and torques. Such matter-matter interactions, although fundamentally EM in nature, are distinct from field-matter interactions in classical physics. Beyond the classical regime, however, the dichotomy that distinguishes the EM field from EM sources gets blurred. An electron’s wavefunction may overlap that of an atomic nucleus, thereby initiating a contact interaction between the magnetic dipole moments of the two particles. Or a neutron passing through a ferromagnetic material may give rise to scattering events involving overlaps between the wave-functions of the neutron and magnetic electrons. Such matter-matter interactions exert equal and opposite forces and/or torques on the colliding particles, and their observable effects often shed light on the nature of the particles involved. It is through such observations that the Amperian model of a magnetic dipole has come to gain prominence over the Gilbertian model. In situations involving overlapping particle wave-functions, it is imperative to take account of the particle-particle interaction energy when computing the scattering amplitudes. As far as total force and total torque on a given volume of material are concerned, such particle-particle interactions do not affect the outcome of calculations, since the mutual actions of the two (overlapping) particles cancel each other out. Both Lorentz and Einstein-Laub formalisms thus yield the same total force and total torque on a given volume—provided that hidden entities are properly removed. The Lorentz formalism, with its roots in the Amperian current-loop model, correctly predicts the interaction energy between two overlapping magnetic dipoles 𝒎𝒎1 and 𝒎𝒎2 as being proportional to −𝒎𝒎1 ∙ 𝒎𝒎2. In contrast, the Einstein-Laub formalism, which is ignorant of such particle-particle interactions, needs to account for them separately.

Proceedings Article | 7 October 2014 Paper

Paper

Transparent conducting electrodes based on thin, ultra-long copper nanowires and graphene nano-composites

Zhaozhao Zhu, Trent Mankowski, Kaushik Balakrishnan, Ali Sehpar Shikoh, Farid Touati, Mohieddine Benammar, Masud Mansuripur, Charles Falco

Proceedings Volume 9177, 91770J (2014) https://doi.org/10.1117/12.2062238

KEYWORDS: Electrodes, Technetium, Copper, Resistance, Graphene, Thin films, Transmittance, Annealing, Glasses, Nanowires

Read Abstract +

Proceedings Article | 7 October 2014 Paper

Paper

Metal nanowire-graphene composite transparent electrodes

Trent Mankowski, Zhaozhao Zhu, Kaushik Balakrishnan, Ali Sehpar Shikoh, Farid Touati, Mohieddine Benammar, Masud Mansuripur, Charlies Falco

Proceedings Volume 9177, 91770I (2014) https://doi.org/10.1117/12.2062292

KEYWORDS: Silver, Graphene, Copper, Electrodes, Transmittance, Oxides, Plasma, Metals, Resistance, Nanowires

Read Abstract +

Proceedings Article | 16 September 2014 Paper

Paper

Electromagnetic force and torque in Lorentz and Einstein-Laub formulations

Masud Mansuripur

Proceedings Volume 9164, 91640B (2014) https://doi.org/10.1117/12.2060554

KEYWORDS: Magnetism, Electrodynamics, Maxwell's equations, Electromagnetism, Chemical species, Polarization, Molecules, Classical physics, Free space, Special relativity

Read Abstract +

Proceedings Article | 12 September 2014 Paper

Paper

On the electrodynamics of moving permanent dipoles in external electromagnetic fields

Masud Mansuripur

Proceedings Volume 9160, 91600X (2014) https://doi.org/10.1117/12.2060566

KEYWORDS: Particles, Magnetism, Electrodynamics, Electromagnetism, Maxwell's equations, Polarization, Optical spheres, Spherical lenses, Solids, Free space

Read Abstract +

Proceedings Article | 5 September 2014 Paper

Paper

Mechanical effects of light on material media: radiation pressure and the linear and angular momenta of photons

Masud Mansuripur

Proceedings Volume 9186, 91860S (2014) https://doi.org/10.1117/12.2063432

KEYWORDS: Photons, Electromagnetism, Optical tweezers, Particles, Dielectrics, Glasses, Free space, Refractive index, Comets, Sun

Read Abstract +

Proceedings Article | 5 September 2014 Paper

Paper

Advances in macromolecular data storage

Masud Mansuripur

Proceedings Volume 9201, 92010A (2014) https://doi.org/10.1117/12.2060549

KEYWORDS: Data storage, Macromolecules, Molecules, Scanning tunneling microscopy, Binary data, Head, Magnetism, Modulation, Microfluidics, Optical storage

Read Abstract +

We propose to develop a new method of information storage to replace magnetic hard disk drives and other instruments of secondary/backup data storage. The proposed method stores petabytes of user-data in a sugar cube (1 cm3), and can read/write that information at hundreds of megabits/sec. Digital information is recorded and stored in the form of a long macromolecule consisting of at least two bases, 𝐴 and 𝐵. (This would be similar to DNA strands constructed from the four nucleic acids 𝐺, 𝐶, 𝐴, 𝑇.) The macromolecules initially enter the system as blank slates. A macromolecule with, say, 10,000 identical bases in the form of 𝐴𝐴𝐴𝐴𝐴. . . . 𝐴𝐴𝐴 may be used to record a kilobyte block of user-data (including modulation and error-correction coding), although, in this blank state, it can only represent the null sequence 00000....000. Suppose this blank string of 𝐴’s is dragged before an atomically-sharp needle of a scanning tunneling microscope (STM). When electric pulses are applied to the needle in accordance with the sequence of 0s and 1s of a 1 𝑘𝐵 block of user-data, selected 𝐴 molecules will be transformed into 𝐵 molecules (e.g., a fraction of 𝐴 will be broken off and discarded). The resulting string now encodes the user-data in the form of 𝐴𝐴𝐵𝐴𝐵𝐵𝐴. . . 𝐵𝐴𝐵. The same STM needle can subsequently read the recorded information, as 𝐴 and 𝐵 would produce different electric signals when the strand passes under the needle. The macromolecule now represents a data block to be stored in a “parking lot” within the sugar cube, and later brought to a read station on demand. Millions of parking spots and thousands of Read/Write stations may be integrated within the micro-fabricated sugar cube, thus providing access to petabytes of user-data in a scheme that benefits from the massive parallelism of thousands of Read/Write stations within the same three-dimensionally micro-structured device.

Proceedings Article | 28 August 2014 Paper

Paper

The charge-magnet paradoxes of classical electrodynamics

Masud Mansuripur

Proceedings Volume 9167, 91670J (2014) https://doi.org/10.1117/12.2060569

KEYWORDS: Electrodynamics, Electromagnetism, Magnetism, Polarization, Switches, Free space, Spintronics, Current controlled current source, Particles, Beryllium

Read Abstract +

Proceedings Article | 12 September 2013 Paper

Paper

The force law of classical electrodynamics: Lorentz versus Einstein and Laub

Masud Mansuripur

Proceedings Volume 8810, 88100K (2013) https://doi.org/10.1117/12.2024808

KEYWORDS: Magnetism, Maxwell's equations, Electromagnetism, Electrodynamics, Polarization, Particles, Electrostriction, Special relativity, Physics, Dielectrics

Read Abstract +

Proceedings Article | 15 October 2012 Paper

Paper

Radiation pressure and photon momentum in negative-index media

Masud Mansuripur, Armis Zakharian

Proceedings Volume 8455, 845511 (2012) https://doi.org/10.1117/12.930113

KEYWORDS: Mirrors, Doppler effect, Refractive index, Dielectrics, Reflectors, Finite-difference time-domain method, Molybdenum, Free space, Light, Computer simulations

Read Abstract +

Proceedings Article | 15 October 2012 Paper

Paper

Trouble with the Lorentz law of force: response to critics

Masud Mansuripur

Proceedings Volume 8455, 845512 (2012) https://doi.org/10.1117/12.930133

KEYWORDS: Magnetism, Particles, Optical spheres, Special relativity, Electrodynamics, Spherical lenses, Maxwell's equations, Polarization, Motion models, Quantum efficiency

Read Abstract +

Proceedings Article | 10 October 2012 Paper

Paper

Angular momentum exchange between light and material media deduced from the Doppler shift

Masud Mansuripur

Proceedings Volume 8458, 845805 (2012) https://doi.org/10.1117/12.930128

KEYWORDS: Photons, Doppler effect, Mirrors, Information operations, Free space, Molybdenum, Dielectrics, Refractive index, Reflection, Amplitude modulation

Read Abstract +

Proceedings Article | 21 September 2011 Paper

Paper

Solar sails, optical tweezers, and other light-driven machines

Masud Mansuripur

Proceedings Volume 8122, 81220D (2011) https://doi.org/10.1117/12.903613

KEYWORDS: Photons, Glasses, Refractive index, Mirrors, Dielectrics, Chemical species, Free space, Liquids, Reflection, Electromagnetism

Read Abstract +

Proceedings Article | 9 September 2011 Paper

Paper

Spin-to-orbital angular momentum exchange via reflection from a cone

Masud Mansuripur, Armis Zakharian, Ewan Wright

Proceedings Volume 8097, 809716 (2011) https://doi.org/10.1117/12.899890

KEYWORDS: Jones calculus, Gaussian beams, Spiral phase plates, Dielectrics, Optical simulations, Reflection, Refractive index, Maxwell's equations, Optical vortices, Reflectors

Read Abstract +

Proceedings Article | 2 September 2009 Paper

Paper

Energy, momentum, and force in classical electrodynamics: application to negative-index media

Masud Mansuripur, Armis Zakharian

Proceedings Volume 7392, 73920Q (2009) https://doi.org/10.1117/12.825510

KEYWORDS: Electromagnetism, Radio propagation, Electrodynamics, Polarization, Magnetism, Beam propagation method, Free space, Maxwell's equations, Light wave propagation, Special relativity

Read Abstract +

Proceedings Article | 20 August 2009 Paper

Paper

What is wrong with the interpretation of recent nano-filament experiments?

Masud Mansuripur, Armis Zakharian

Proceedings Volume 7400, 740012 (2009) https://doi.org/10.1117/12.825496

KEYWORDS: Acoustics, Electromagnetism, Radio propagation, Solids, Silica, Wave propagation, Glasses, Dielectrics, Light wave propagation, Refractive index

Read Abstract +

Proceedings Article | 20 August 2009 Paper

Paper

Whence the Minkowski momentum?

Masud Mansuripur, Armis Zakharian

Proceedings Volume 7400, 740010 (2009) https://doi.org/10.1117/12.825479

KEYWORDS: Mirrors, Refractive index, Dielectrics, Electromagnetism, Magnetism, Reflectors, Liquids, Finite-difference time-domain method, Interfaces

Read Abstract +

Proceedings Article | 31 July 2009 Paper

Paper

Plasmonic nano-structures for optical data storage

Masud Mansuripur, A. Zakharian, A. Lesuffleur, Sang-Hyun Oh, R. Jones, N. Lindquist, Hyungsoon Im, A. Kobyakov, J. Moloney

Proceedings Volume 7505, 75050I (2009) https://doi.org/10.1117/12.838505

KEYWORDS: Silver, Plasmonics, Optical storage, Data storage, Femtosecond phenomena, Visible radiation, Dielectric polarization, Dielectrics, Ultraviolet radiation, Nanorods

Read Abstract +

Proceedings Article | 31 July 2009 Paper

Paper

Can future storage technologies benefit from existing or emerging nano-tools and techniques?

Masud Mansuripur

Proceedings Volume 7505, 75050F (2009) https://doi.org/10.1117/12.838534

KEYWORDS: Data storage, Magnetism, Mode locking, Proteins, Femtosecond phenomena, Pulsed laser operation, Ultrafast phenomena, Dispersion, Optical storage, Supercontinuum generation

Read Abstract +

Proceedings Article | 29 August 2008 Paper

Paper

Generalized Lorentz Law and the force of radiation on magnetic dielectrics

Masud Mansuripur

Proceedings Volume 7038, 70381T (2008) https://doi.org/10.1117/12.796530

KEYWORDS: Magnetism, Electromagnetism, Prisms, Dielectrics, Free space, Reflection, Electromagnetic radiation, Absorption, Refractive index, Maxwell's equations

Read Abstract +

Proceedings Article | 25 September 2007 Paper

Paper

Bloch mode analysis of transmission through periodic slit arrays in finite thickness metallic slabs

Yong Xie, Armis Zakharian, Jerome Moloney, Masud Mansuripur

Proceedings Volume 6641, 66411S (2007) https://doi.org/10.1117/12.733447

KEYWORDS: Finite-difference time-domain method, Interfaces, Transmittance, Copper, Chromium, Computer simulations, Surface plasmons, Wave propagation, Fabry–Perot interferometers, Surface plasmon polaritons

Read Abstract +

Proceedings Article | 5 September 2007 Paper

Paper

Momentum of the electromagnetic field in transparent dielectric media

Masud Mansuripur

Proceedings Volume 6644, 664413 (2007) https://doi.org/10.1117/12.733435

KEYWORDS: Dielectrics, Electromagnetism, Mirrors, Free space, Refractive index, Magnetism, Doppler effect, Reflection, Antireflective coatings, Radio propagation

Read Abstract +

Proceedings Article | 11 July 2007 Paper

Paper

Modeling diffractive optical elements for optical data storage applications

Masud Mansuripur

Proceedings Volume 6620, 66200N (2007) https://doi.org/10.1117/12.738645

KEYWORDS: Diffractive optical elements, Wavefronts, Polarization, Refractive index, Coating, Gaussian beams, Aspheric lenses, Systems modeling, Diffraction, Reflectivity

Read Abstract +

Proceedings Article | 14 February 2007 Paper

Paper

Micro-sphere resonator reflector for fiber laser

Khanh Kieu, Masud Mansuripur

Proceedings Volume 6452, 645211 (2007) https://doi.org/10.1117/12.703252

KEYWORDS: Resonators, Fiber lasers, Mirrors, Reflectors, Laser resonators, Fiber Bragg gratings, Raman spectroscopy, Reflectivity, Glasses, Q switches

Read Abstract +

Proceedings Article | 5 October 2006 Paper

Paper

Equivalence of total force (and torque) for two formulations of the Lorentz law

Masud Mansuripur, Armis Zakharian, Jerome Moloney

Proceedings Volume 6326, 63260G (2006) https://doi.org/10.1117/12.680066

KEYWORDS: Dielectrics, Solids, Free space, Liquids, Optical tweezers, Electromagnetism, Polarization density, Electrodynamics, Maxwell's equations, Magnetism

Read Abstract +

Proceedings Article | 22 June 2006 Paper

Paper

Investigation of crystallization and amorphization dynamics of phase-change thin films using sub-nanosecond laser pulses

Khanh Kieu, Kenji Narumi, Masud Mansuripur

Proceedings Volume 6282, 62820J (2006) https://doi.org/10.1117/12.685208

KEYWORDS: Crystals, Laser crystals, Germanium antimony tellurium, Pulsed laser operation, Thin films, Laser beam diagnostics, Crystallography, Optical discs, Laser energy, Laser marking

Read Abstract +

Proceedings Article | 23 February 2006 Paper

Paper

Picosecond fiber laser oscillator at 1.5um with 2.3W average output power and 160 MHz repetition rate

Pavel Polynkin, Alexander Polynkin, Dmitriy Panasenko, Masud Mansuripur, N. Peyghambarian, Jerome Moloney

Proceedings Volume 6102, 610216 (2006) https://doi.org/10.1117/12.647264

KEYWORDS: Oscillators, Fiber lasers, Pulsed laser operation, Mode locking, Laser resonators, Mirrors, Fiber amplifiers, Structured optical fibers, Reflection, Erbium

Read Abstract +

Proceedings Article | 27 August 2005 Paper

Paper

Radiation pressure and the distribution of electromagnetic force in dielectric media

Masud Mansuripur

Proceedings Volume 5930, 59300O (2005) https://doi.org/10.1117/12.614131

KEYWORDS: Liquids, Dielectrics, Dielectric polarization, Polarization, Gaussian beams, Electromagnetism, Water, Refractive index, Interfaces, Maxwell's equations

Read Abstract +

Proceedings Article | 9 September 2004 Paper

Paper

Applications of photonic crystals in optical data storage

Tao Liu, Armis Zakharian, Radhakrishn Rathnakumar, Mahmoud Fallahi, Jerome Moloney, Masud Mansuripur

Proceedings Volume 5380, (2004) https://doi.org/10.1117/12.556889

KEYWORDS: Photonic crystals, Waveguides, Dielectrics, Directional couplers, Optical components, Computer simulations, Polymethylmethacrylate, Crystals, Optical discs, Near field optics

Read Abstract +

Proceedings Article | 9 September 2004 Paper

Paper

Macro-molecular data storage with petabyte/cm3 density, highly parallel read/write operations, and genuine 3D storage capability

Masud Mansuripur, Pramod Khulbe

Proceedings Volume 5380, (2004) https://doi.org/10.1117/12.562434

KEYWORDS: Molecules, Data storage, Macromolecules, Head, Signal to noise ratio, Binary data, Electrodes, 3D optical data storage, Amplifiers, Spherical lenses

Read Abstract +

Proceedings Article | 9 September 2004 Paper

Paper

Behavior of GeSbTeBi phase-change optical recording media under sub-nanosecond pulsed laser irradiation

Kazuo Watabe, Pavel Polynkin, Masud Mansuripur

Proceedings Volume 5380, (2004) https://doi.org/10.1117/12.557067

KEYWORDS: Reflectivity, Crystals, Dielectrics, Laser crystals, Laser irradiation, Optical storage, Laser beam diagnostics, Tellurium, Diffusion, Absorption

Read Abstract +

Proceedings Article | 16 September 2003 Paper

Paper

Information storage and retrieval using macromolecules as storage media

Masud Mansuripur, Pramod Khulbe, Stephen Kuebler, Joseph Perry, M. Giridhar, James Erwin, Kibyung Seong, Seth Marder, Nasser Peyghambarian

Proceedings Volume 5069, (2003) https://doi.org/10.1117/12.533057

KEYWORDS: Molecules, Data storage, Macromolecules, Particles, Electrodes, Binary data, Glasses, Liquids, Optical spheres, Optical storage

Read Abstract +

Proceedings Article | 10 January 2002 Paper

Paper

Optical characterization of multilayer stacks for phase-change media

Rongguang Liang, Chubing Peng, Kenichi Nagata, Kelly Daly Flynn, Masud Mansuripur

Proceedings Volume 4342, (2002) https://doi.org/10.1117/12.453427

KEYWORDS: Dielectrics, Aluminum, Multilayers, Reflectivity, Optical recording, Crystals, Manufacturing, Optical testing, Reflection, Interfaces

Read Abstract +

Proceedings Article | 10 January 2002 Paper

Paper

DNA, human memory, and the storage technology of the 21st century

Masud Mansuripur

Proceedings Volume 4342, (2002) https://doi.org/10.1117/12.453368

KEYWORDS: Neurons, Molecules, Proteins, Axons, Data storage, Dendrites, Brain, Organisms, Polymers, Genetics

Read Abstract +

Proceedings Article | 10 January 2002 Paper

Paper

Temperature-dependence of optical constants in phase-change media

Pramod Khulbe, Terril Hurst, Masud Mansuripur

Proceedings Volume 4342, (2002) https://doi.org/10.1117/12.453397

KEYWORDS: Reflectivity, Crystals, Pulsed laser operation, Dielectrics, Germanium, Antimony, Tellurium, Laser crystals, Continuous wave operation, Thermography

Read Abstract +

Proceedings Article | 17 November 2000 Paper

Paper

Rewritable optical disk technologies

Masud Mansuripur

Proceedings Volume 4109, (2000) https://doi.org/10.1117/12.409216

KEYWORDS: Data storage, Magnetism, Molybdenum, Optical discs, Objectives, Optical storage, Glasses, Integrated optics, Semiconductor lasers, Head

Read Abstract +

The two mainstream technologies for rewritable optical data storage are based on magneto-optical (MO) and phase-change (PC) media. In both cases a focused laser beam is used to raise the temperature of the medium beyond a certain critical temperature (i.e., melting and crystallization temperatures in the case of PC, and the Curie temperature in the case of MO) for writing, erasure, and overwriting of data. The readout of information from these media relies on the change of reflectivity of the medium (PC), or the effect of the medium on the state of polarization of the laser beam (MO). The performance of these data storage systems is characterized by the storage density of the media, achievable data rates during recording and readout, longevity, reliability, and cost of the finished products. These performance criteria in turn are determined by a host of physical and technological factors, among them: (1) Wavelength of the available semiconductor laser diodes; (2) Type of optics used in shaping the laser beam and confining it to sub-micron regions (i.e., conventional optics, near-field optics, flying lasers, integrated optics, etc.); (3) Availability of one- or two- dimensional arrays of lasers and the corresponding optics; (4) Miniature magnetic heads for thermally-assisted writing (inductive) and magneto-resistive readout; (5) Adaptive optics for beam-shaping and/or polarization control; (6) Availability of low-noise media that can deliver large readout signals; (7) Advanced signal processing techniques (both optical and electronic); (8) Multi-layer recording on stacked layers of media; (9) Novel encoding/decoding schemes for efficient use of available space on the media; (10) Mass-production of flat, rigid, low-noise patterned substrates (plastic or glass); (11) Multi-level recording. We discuss the present state of the art in optical data storage, describe the potentials and pitfalls of the existing technologies, and draw conclusions about the future of this field.

Proceedings Article | 18 September 2000 Paper

Paper

Optical disk noise analysis using rigorous vector diffraction calculations

Kimihiro Saito, Naoyasu Miyagawa, Masud Mansuripur

Proceedings Volume 4090, (2000) https://doi.org/10.1117/12.399333

KEYWORDS: Interference (communication), Molybdenum, Diffraction, Signal to noise ratio, Optical discs, Polarization, Objectives, Sensors, Glasses, Signal detection

Read Abstract +

SPIE Journal Paper | 1 July 2000

Optical modeling combining geometrical ray tracing and physical-optics software

John Tesar, Rongguang Liang, Masud Mansuripur

OE, Vol. 39, Issue 07, (July 2000) https://doi.org/10.1117/12.10.1117/1.602567

KEYWORDS: Optical spheres, Lens design, Geometrical optics, Ray tracing, Fringe analysis, Mirrors, Glasses, Wavefronts, Spherical lenses, Interferometry

Proceedings Article | 30 November 1999 Paper

Paper

VERSATEST-I: a versatile polychromatic dynamic testbed for optical disks

Bernhard Wolfring, Thomas Weber, Thomas Mueller-Wirts, Masud Mansuripur

Proceedings Volume 3806, (1999) https://doi.org/10.1117/12.371150

KEYWORDS: Sensors, Signal detection, Microscopes, Semiconductor lasers, Optical discs, Beam splitters, Servomechanisms, Objectives, Molybdenum, Actuators

Read Abstract +

Proceedings Article | 28 June 1999 Paper

Paper

Computation of the effective depth of grooves in an optical disk using vector diffraction theory

Wei-Hung Yeh, Lifeng Li, Masud Mansuripur

Proceedings Volume 3864, 38642X (1999) https://doi.org/10.1117/12.997665

KEYWORDS: Diffraction, Objectives, Optical discs, Dielectric polarization, Polarization, Diffraction gratings, Optical storage, Polarizers, System on a chip, Americium

Read Abstract +

Proceedings Article | 28 June 1999 Paper

Paper

Crystallization process in thin films of GeSbTe

Chubing Peng, Masud Mansuripur

Proceedings Volume 3864, 38641T (1999) https://doi.org/10.1117/12.997651

KEYWORDS: Laser crystals, Reflectivity, Autoregressive models, Crystals, Thin films, Germanium antimony tellurium, Optical storage, Chalcogenides, Laser marking, Thermal effects

Read Abstract +

Proceedings Article | 28 June 1999 Paper

Paper

Evanescent coupling in magneto-optical and phase-change disk systems based on the solid immersion lens (SIL)

Wei-Hung Yeh, Masud Mansuripur

Proceedings Volume 3864, 386436 (1999) https://doi.org/10.1117/12.997627

KEYWORDS: Molybdenum, Magneto-optics, Reflectivity, Solids, Gaussian beams, Dielectrics, Near field optics, Objectives, Crystals, Optical storage

Read Abstract +

Proceedings Article | 28 June 1999 Paper

Paper

Crystallization and amorphization studies on a Ge2Sb2Te5 thin film sample using a two-laser static tester

Pramod Khulbe, Xiaodong Xun, Masud Mansuripur

Proceedings Volume 3864, 38641V (1999) https://doi.org/10.1117/12.997650

KEYWORDS: Crystals, Reflectivity, Pulsed laser operation, Crystallography, Thin films, Laser crystals, Continuous wave operation, Dielectrics, Optical storage, Microscopes

Read Abstract +

Proceedings Article | 30 July 1997 Paper

Paper

Investigation of certain diffraction effects in a double-layer optical disk

Jang-hoon Yoo, Chul Lee, Dong-Ho Shin, Chanda Bartlett, Kit-Iu Cheong, James Erwin, Masud Mansuripur

Proceedings Volume 3109, (1997) https://doi.org/10.1117/12.280687

KEYWORDS: Diffraction, Objectives, Computer simulations, Monochromatic aberrations, Photography, Optical discs, Optical simulations, Reflectivity, Light scattering, Collimation

Read Abstract +

Proceedings Article | 8 September 1995 Paper

Paper

Optical and magneto-optical characteristics of sol-gel derived bismuth-doped iron garnets (using the Ultimate Elipsometer)

John Simpson, Gimtong Teowee, Masud Mansuripur

Proceedings Volume 2514, (1995) https://doi.org/10.1117/12.218739

KEYWORDS: Sensors, Polarization, Diffraction, Signal detection, Garnet, Annealing, Iron, Molybdenum, Diffraction gratings, Reflectivity

Read Abstract +

Proceedings Article | 12 October 1994 Paper

Paper

Observation of domains and grooves on MO disks with optical microscopy and image processing

Michael Ruane, Sergei Gadetsky, Masud Mansuripur

Proceedings Volume 2338, (1994) https://doi.org/10.1117/12.190205

KEYWORDS: Molybdenum, Magnetism, Image processing, Microscopes, Imaging systems, Optical storage, Statistical analysis, Cameras, Optical microscopy, Image analysis

Read Abstract +

Proceedings Article | 13 August 1992 Paper

Paper

Measurement of the magnetic anisotropy energy constants for magneto-optical recording media

Roger Hajjar, Te-Ho Wu, Hong Fu, Masud Mansuripur

Proceedings Volume 1663, (1992) https://doi.org/10.1117/12.137546

KEYWORDS: Anisotropy, Magnetism, Terbium, Kerr effect, Optical storage, Transition metals, Magnetometers, Metals, Molybdenum, Temperature metrology

Read Abstract +

Proceedings Article | 13 August 1992 Paper

Paper

Diffraction analysis and evaluation of several focus- and track-error detection schemes for magneto-optical disk systems

Bruce Bernacki, Masud Mansuripur

Proceedings Volume 1663, (1992) https://doi.org/10.1117/12.137536

KEYWORDS: Monochromatic aberrations, Sensors, Diffraction, Error analysis, Optical tracking, Solids, Signal detection, Objectives, Servomechanisms, Optical storage

Read Abstract +

Proceedings Article | 13 August 1992 Paper

Paper

Instrumentation of the variable-angle magneto-optic ellipsometer and its application to m-o media and other nonmagnetic films

Andy Zhou, James Erwin, Masud Mansuripur

Proceedings Volume 1663, (1992) https://doi.org/10.1117/12.137551

KEYWORDS: Dielectrics, Multilayers, Reflection, Error analysis, Optical storage, Statistical analysis, Reflectivity, Sensors, Polarizers, Stars

Read Abstract +

Proceedings Article | 13 August 1992 Paper

Paper

Investigation of magneto-optical recording media using magnetic force microscopy

Hirofumi Sukeda, Roger Hajjar, Masud Mansuripur

Proceedings Volume 1663, (1992) https://doi.org/10.1117/12.137541

KEYWORDS: Magnetism, Multiphoton fluorescence microscopy, Microscopy, Capacitance, Atomic force microscopy, Microscopes, Data modeling, Optical storage, Photomicroscopy, Nickel

Read Abstract +

Proceedings Article | 1 July 1991 Paper

Paper

Enumerative modulation coding with arbitrary constraints and postmodulation error correction coding for data storage systems

Masud Mansuripur

Proceedings Volume 1499, (1991) https://doi.org/10.1117/12.45930

KEYWORDS: Modulation, Computer programming, Optical storage, Data storage, Solids, Binary data, Magnetism, Error control coding, Clocks, Data corrections

Read Abstract +

Proceedings Article | 1 August 1990 Paper

Paper

Computer modeling of optical storage media and systems

Masud Mansuripur

Proceedings Volume 1316, (1990) https://doi.org/10.1117/12.22019

KEYWORDS: Optical storage, Magnetism, Magneto-optics, Computing systems, Signal detection, Computer simulations, Head, Dielectrics, Molybdenum, Diffraction

Read Abstract +

Showing 5 of 90 publications

Proceedings Volume Editor (1)

SPIE Conference Volume | 23 October 2009

Photonics and Optoelectronics Meetings (POEM) 2009: Optical Storage and New Storage Technologies

Conference Committee Involvement (25)

Optical Trapping and Optical Micromanipulation XXII

3 August 2025 | San Diego, California, United States

Molecular and Nanophotonic Machines, Devices, and Applications VIII

3 August 2025 | San Diego, California, United States

Optical Trapping and Optical Micromanipulation XXI

18 August 2024 | San Diego, California, United States

Molecular and Nanophotonic Machines, Devices, and Applications VII

18 August 2024 | San Diego, California, United States

Molecular and Nanophotonic Machines VI

22 August 2023 | San Diego, California, United States

Optical Trapping and Optical Micromanipulation XX

20 August 2023 | San Diego, California, United States

Optical Trapping and Optical Micromanipulation XIX

21 August 2022 | San Diego, California, United States

Tribute to James C. Wyant: The Extraordinaire in Optical Metrology and Optics Education

2 August 2021 | San Diego, California, United States

Optical Trapping and Optical Micromanipulation XVIII

2 August 2021 | San Diego, California, United States

Optical Trapping and Optical Micromanipulation XVII

24 August 2020 | Online Only, California, United States

Optical Trapping and Optical Micromanipulation XVI

11 August 2019 | San Diego, California, United States

Optical Trapping and Optical Micromanipulation XV

19 August 2018 | San Diego, California, United States

Optical Trapping and Optical Micromanipulation XIV

6 August 2017 | San Diego, California, United States

Optical Trapping and Optical Micromanipulation XIII

28 August 2016 | San Diego, California, United States

Carbon Nanotubes, Graphene, and Emerging 2D Materials for Electronic and Photonic Devices IX

28 August 2016 | San Diego, California, United States

Optical Trapping and Optical Micromanipulation XII

9 August 2015 | San Diego, California, United States

Carbon Nanotubes, Graphene, and Emerging 2D Materials for Electronic and Photonic Devices VIII

9 August 2015 | San Diego, California, United States

Optical Trapping and Optical Micromanipulation IX

12 August 2012 | San Diego, California, United States

Optical Trapping and Optical Micromanipulation VIII

21 August 2011 | San Diego, California, United States

Optical Trapping and Optical Micromanipulation VII

1 August 2010 | San Diego, California, United States

Optical Data Storage 2010

23 May 2010 | Boulder, Colorado, United States

Optical Storage and New Storage Technologies

8 August 2009 | Wuhan, China

Optical Trapping and Optical Micromanipulation VI

2 August 2009 | San Diego, California, United States

Tribute to Joseph W. Goodman

29 August 2007 | San Diego, California, United States

Optical Data Storage

14 May 2000 | Whistler, BC, Canada

Showing 5 of 25 Conference Committees

Course Instructor

SC371: Limitations Imposed by Signal and Noise in Optical Data Storage

The ultimate limit in data storage is imposed by the available signal-to-noise ratio (SNR) in readout. We discuss the sources of signal, noise, and jitter in optical data storage, and examine various techniques for evaluating their contributions to the readout waveform. We also describe methods of improving the signal and reducing the noise as practiced today, as well as promising techniques for future devices. Examples from conventional as well as novel optical storage systems will be used to clarify the underlying concepts.

Expand Description +

SIGN IN TO:

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Advertisement

Advertisement