Dr. L. Brandon Shaw Profile

Dr. L. Brandon Shaw

Research Physicist at US Naval Research Lab

SPIE Involvement:

Conference Program Committee | Author | Editor

Publications (77)

Proceedings Article | 10 June 2024 Presentation

Crystal fibers for active applications

Daniel Gibson, Robert Nicol, Woohong Kim, Shyam Bayya, Frederic Kung, Daniel Rhonehouse, Jason Myers, Leslie Shaw, Jasbinder Sanghera

Proceedings Volume PC13029, PC1302906 (2024) https://doi.org/10.1117/12.3015914

KEYWORDS: Laser crystals, Crystals, Fiber lasers, Laser applications, Laser systems engineering, High power lasers, Glasses, Fabrication

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Proceedings Article | 12 March 2024 Paper

All-spliced 11.3 W four-wave mixing fiber source at 760 nm

Patrick Hemmer, Rafael Gattass, Daniel Rhonehouse, L. Brandon Shaw, Geoffrey Chin, Augustus Carlson, Shyam Bayya, Jasbinder Sanghera

Proceedings Volume 12865, 128650M (2024) https://doi.org/10.1117/12.3004758

KEYWORDS: Photonic crystal fibers, Visible radiation, Four wave mixing, Fiber lasers

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Proceedings Article | 9 March 2024 Presentation

Measurement of dispersion uniformity of photonic crystal fibers using white light interferometry

Timothy Lim, Daniel Rhonehouse, Geoffrey Chin, Rafael Gattass, Lynda Busse, L. Brandon Shaw, Michelle Sander

Proceedings Volume PC12882, PC128820J (2024) https://doi.org/10.1117/12.2692997

KEYWORDS: Dispersion, Photonic crystal fibers, Optical interferometry, Fabrication, Tolerancing, Phase measurement, Materials properties

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Proceedings Article | 8 March 2024 Presentation + Paper

Dual fiber laser pumped tunable mid-infrared laser source with high speed modulation

Augustus Carlson, Rafael Gattass, L. Brandon Shaw, Patrick Hemmer, Jasbinder Sanghera, David Szymanski, Chester Haag, Sandra Brusiloff, Pliny Hawthorn

Proceedings Volume 12882, 1288206 (2024) https://doi.org/10.1117/12.3008315

KEYWORDS: Modulation, Difference frequency generation, Mid-IR, Fiber lasers, Tunable lasers, Tunable filters, Mid infrared

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Proceedings Article | 15 June 2023 Presentation

Crystal fibers for active applications

Daniel Gibson, Robert Nicol, Rick Kim, Shyam Bayya, Jasbinder Sanghera, Brandon Shaw, Daniel Rhonehouse, Jason Myers, Adam Floyd, Tony Zhou, Bryan Sadowski, Fred Kung, Joshua Gild

Proceedings Volume PC12515, PC1251509 (2023) https://doi.org/10.1117/12.2668369

KEYWORDS: Crystals, Laser systems engineering, Laser damage threshold, Interfaces, High power lasers, Glasses, Fabrication, Cladding

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Proceedings Article | 14 March 2023 Presentation

Crystal fiber laser materials (Conference Presentation)

Daniel Gibson, Robert Nicol, Rick Kim, Shyam Bayya, Jasbinder Sanghera, Brandon Shaw, Daniel Rhonehouse, Jason Myers, Adam Floyd, Tony Zhou, Kent Everett, Ben Gray, Hyunjun Kim

Proceedings Volume 12417, 124170A (2023) https://doi.org/10.1117/12.2657515

KEYWORDS: Laser crystals, Fiber lasers, Crystals, Laser systems engineering, Laser damage threshold, Interfaces, High power lasers, Glasses, Cladding

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Proceedings Article | 9 March 2023 Presentation

Crystal fibers for laser sources

Daniel Gibson, Brandon Shaw, Shyam Bayya, Jas Sanghera, Robert Nicol, Tony Zhou, Adam Floyd, Jason Myers, Robel Bekele

Proceedings Volume PC12399, PC1239902 (2023) https://doi.org/10.1117/12.2657526

KEYWORDS: Optical fibers, Laser sources, Laser crystals, Crystals, Laser systems engineering, Laser damage threshold, High power lasers, Glasses, Cladding

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Proceedings Article | 30 May 2022 Presentation + Paper

Chemical vapor detection using a passive infrared bioinspired sensor

Kevin Major, Robert Nicol, Jasbinder Sanghera, L. Brandon Shaw, Alan Samuels, Charles Davidson, Avishai Ben-David, Kenneth Ewing

Proceedings Volume 12116, 121160S (2022) https://doi.org/10.1117/12.2620557

KEYWORDS: Sensors, Infrared sensors, Bioalcohols, Black bodies, Infrared radiation, Industrial chemicals, Optical filters, Infrared detectors, Signal detection, Temperature metrology

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Proceedings Article | 30 May 2022 Presentation + Paper

Detection of chemical liquid hazards on surfaces using biomimetic stand-off sensing

Scott Rogers, Chris Howle, Ken McEwan, Kevin Major, Brandon Shaw, Kenneth Ewing

Proceedings Volume 12116, 121160N (2022) https://doi.org/10.1117/12.2622900

KEYWORDS: Liquids, Sensors, Infrared radiation, Electronic filtering, Chemical weapons, Optical filters, Mirrors, Infrared spectroscopy, Biomimetics

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Proceedings Article | 30 May 2022 Presentation + Paper

Watt-level 2150 nm fiber laser

Rafael Gattass, Augustus Carlson, Colin Baker, Daniel Rhonehouse, E. Joseph Friebele, L. Brandon Shaw, Jasbinder Sanghera

Proceedings Volume 12092, 1209209 (2022) https://doi.org/10.1117/12.2633143

KEYWORDS: Fiber lasers, Laser systems engineering, Holmium, Thulium, Fiber Bragg gratings, Semiconductor lasers, Reflectivity, Diodes, Laser development, Laser damage threshold

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Proceedings Article | 27 May 2022 Presentation + Paper

Broadband transmission enhancement of B270 via random antireflective structured surfaces

Thomas Hutchens, Christopher Wilson, Ishwar Aggarwal, Lynda Busse, Jesse Frantz, L. Brandon Shaw, Jas Sanghera

Proceedings Volume 12103, 121030B (2022) https://doi.org/10.1117/12.2623469

KEYWORDS: Scanning electron microscopy, Reflectivity, Reflection, Etching, Antireflective coatings, Silica, Plasma etching, Visible radiation, Soda-lime glass, Optical coatings

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Proceedings Article | 15 April 2021 Presentation + Paper

Detection of chemical threats on surfaces using a human color vision inspired sensing method

Kevin Major, Jasbinder Sanghera, L. Shaw, Chris Howle, Ken McEwan, Kenneth Ewing

Proceedings Volume 11749, 117490L (2021) https://doi.org/10.1117/12.2589553

KEYWORDS: Color vision, Sensors, Infrared sensors, Biological and chemical sensing, Optical filters, Nerve agents, Infrared radiation, Infrared detectors, Environmental sensing, Chemical fiber sensors

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Proceedings Article | 20 May 2020 Presentation + Paper

Anti-reflective structured surfaces on soda-lime windows for high power laser applications

Christopher Wilson, Thomas Hutchens, Lynda Busse, Jesse Frantz, L. Brandon Shaw, Jas S. Sanghera, Ishwar Aggarwal

Proceedings Volume 11403, 114030H (2020) https://doi.org/10.1117/12.2570179

KEYWORDS: Silica, High power lasers, Reflectivity, Visible radiation, Reflection, Etching, Antireflective coatings, Reactive ion etching, Gradient-index optics, Soda-lime glass

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Proceedings Article | 19 May 2020 Presentation + Paper

Design and operation of a human color vision inspired sensor for proximate standoff detection

Kevin Major, Jasbinder Sanghera, L. Brandon Shaw, Kenneth Ewing

Proceedings Volume 11416, 114160B (2020) https://doi.org/10.1117/12.2558802

KEYWORDS: FT-IR spectroscopy, Aluminum, Optical filters, Bandpass filters, Sensors, Standoff detection, Mirrors, Absorption, Biomimetics, Color vision

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Proceedings Article | 20 May 2019 Paper

Spinel optics for high energy lasers

Syed N. Qadri, Shyam Bayya, Guillermo Villalobos, Woohong Kim, Michael Hunt, Lynda Busse, Jesse Frantz, L. Brandon Shaw, Jasbinder Sanghera, Bryan Sadowski, Robert Miklos, Ishwar Aggarwal, Christopher Wilson

Proceedings Volume 10985, 1098508 (2019) https://doi.org/10.1117/12.2520612

KEYWORDS: Spinel, Absorption, Ceramics, Laser damage threshold, Microwave radiation, Industrial chemicals

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Proceedings Article | 17 May 2019 Presentation + Paper

Laser damage testing of windows with anti-reflection structured surfaces for high power continuous-wave near-infrared laser applications

Christopher Wilson, Thomas Hutchens, Jesse Frantz, Lynda Busse, L. Brandon Shaw, Jas Sanghera, Ishwar Aggarwal

Proceedings Volume 10985, 109850D (2019) https://doi.org/10.1117/12.2519194

KEYWORDS: Laser induced damage, Continuous wave operation, Silica, High power lasers, Reflection, Reflectivity, Thermography, Laser damage threshold, Antireflective coatings, Thin films

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Proceedings Article | 13 May 2019 Paper

Improved polymer cladding for eye safer fiber lasers

Darryl Boyd, L. Brandon Shaw, Colin Baker, Dan Rhonehouse, Michael Hunt, E. Joseph Friebele, Woohong Kim, Jasbinder Sanghera

Proceedings Volume 10981, 109810H (2019) https://doi.org/10.1117/12.2522718

KEYWORDS: Polymers, Cladding, Fiber lasers, Nanoparticles, Refractive index, Ceramics, Eye, Polymer optical fibers, Coating

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SPIE Journal Paper | 8 November 2018

Laser damage of silica optical windows with random antireflective structured surfaces

Christopher R. Wilson, Thomas C. Hutchens, Gopal Sapkota, Jason R. Case, Matthew G. Potter, Lynda E. Busse, Jesse A. Frantz, L. Brandon Shaw, Jas S. Sanghera, Menelaos K. Poutous, Ishwar D. Aggarwal

OE, Vol. 57, Issue 12, 121906, (November 2018) https://doi.org/10.1117/12.10.1117/1.OE.57.12.121906

KEYWORDS: Antireflective coatings, Laser induced damage, Silica, Windows, Scanning electron microscopy, Resistance, Reflectivity, Microscopes, Thin films, Interfaces

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High intensity nanosecond laser pulses induce damage on uncoated optics and antireflection (AR) coated optics with thin film boundaries. Structured surfaces with AR performance have shown higher damage resistance than conventional AR coatings. This work explores laser-induced damage threshold (LIDT) of random antireflective surface structures (rARSS), covering interfaces of planar fused silica substrates, using a 7 ± 1 nanosecond duration, single damaging pulse at 1064-nm wavelength. The rARSS treated windows were optimized for AR at 1064 nm, and transmittance of each treated interface was increased by 3.2% per ISO 13697. Incident fluence was controlled near LIDT for both entry and exit sides. Multiple locations were tested for each fluence setting in accordance with ISO 21254 1-on-1 LIDT testing. Double-sided and single-sided rARSS, orientation with both entrance-side and exit-side treatments, were tested to determine effects random structures have in damage induced by field enhancement on the exit side. Results show that rARSS on a single side of an optic have higher resistance to onset of laser damage when located at entry (structured) side. All tests resulting in damage of polished and single-sided rARSS oriented on exit side were ballistic on beam exit facet, showing surface cracks. Results from rARSS located on beam entry side (both single- and double-side treated) showed nonballistic damage and densification of rARSS features from localized melting or reflow, capping the rARSS but still preserving effective-gradient index and rARSS transmission enhancement. This suggests that the localized melting of the rARSS optic surface does not constitute damage optically, or at least not catastrophically within the prebulk damage regime. Therefore, it is possible to foresee the onset of true damage within an optical system via tracking transmission drop, and swap optics out before catastrophic system failure. The drop in transmission acts as an early warning system, making these rARSS optics an invaluable tool in high-energy laser development.

Proceedings Article | 23 May 2018 Paper

Enabling standoff detection of hazardous materials using a fiber optic coupled quantum cascade infrared laser system

Kenneth Ewing, Kevin Major, Jasbinder Sanghera, Rafael Gattass, L. Brandon Shaw, Lynda Busse, David Arnone, Enrique Lopez, Michael Pushkarsky, Justin Kane, Rhea Clewes, Linda Lee, Chris Howle

Proceedings Volume 10629, 106290A (2018) https://doi.org/10.1117/12.2304352

KEYWORDS: Quantum cascade lasers, Standoff detection, Explosives, Infrared spectroscopy, Cameras, Optical fibers, Infrared radiation, Long wavelength infrared, Sensors

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Proceedings Article | 14 May 2018 Presentation

Growth of crystalline claddings on single crystal fiber (Conference Presentation)

L. Brandon Shaw, Shyam Bayya, Woohong Kim, Jason Myers, Charles Askins, John Peele, Daniel Rhonehouse, Rajesh Thapa, Daniel Gibson, Jasbinder Sanghera

Proceedings Volume 10637, 106370M (2018) https://doi.org/10.1117/12.2310140

KEYWORDS: Crystals, Cladding, YAG lasers, Liquid crystals, Fiber lasers, Laser crystals, Silica, Absorption, Holmium, Optical fibers

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Proceedings Article | 14 May 2018 Presentation

Recent advances in holmium doped fibers for high-energy lasers (Conference Presentation)

Colin Baker, E. Joseph Friebele, Ashley Burdett, L. Brandon Shaw, Steven Bowman, Woohong Kim, Jasbinder Sanghera, John Ballato, Courtney Kucera, Amber Vargas, Alexander Hemming, Nikita Simikov, John Haub

Proceedings Volume 10637, 1063704 (2018) https://doi.org/10.1117/12.2310134

KEYWORDS: Holmium, Nanoparticles, Laser energy, Fiber lasers, Silica, Phonons, Laser applications, Laser safety, Directed energy weapons, Eye

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Proceedings Article | 8 May 2018 Presentation + Paper

Long-duration CW laser testing of optical windows with random antireflective surface structures on both interfaces: preliminary results

Christopher Wilson, Thomas Hutchens, Lynda Busse, Jesse Frantz, L. Brandon Shaw, Jas Sanghera, Ishwar Aggarwal

Proceedings Volume 10627, 106270H (2018) https://doi.org/10.1117/12.2317882

KEYWORDS: Continuous wave operation, Antireflective coatings, Thin films, Laser induced damage, Silica, Interfaces, Laser damage threshold, Optical testing, Windows, Thin film coatings, High power fiber lasers

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Proceedings Article | 14 March 2018 Presentation

Laser damage testing of silica windows with hydrophobic antireflective surfaces (Conference Presentation)

Lynda Busse, Jesse Frantz, Darryl Boyd, Woohong (Rick) Kim, Brandon Shaw, Ishwar Aggarwal, Jas Sanghera

Proceedings Volume 10513, 1051316 (2018) https://doi.org/10.1117/12.2292258

KEYWORDS: Silica, Antireflective coatings, Laser induced damage, Glasses, Laser energy, Optical simulations, Eye, Reflection, Laser damage threshold, Laser systems engineering

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Proceedings Article | 22 February 2018 Paper

Refractive waveguide non-mechanical beam steering (NMBS) in the MWIR

Jason Myers, Jesse Frantz, Christopher Spillmann, Robel Bekele, Jakub Kolacz, Henry Gotjen, Jawad Naciri, Brandon Shaw, Jas Sanghera

Proceedings Volume 10539, 105390A (2018) https://doi.org/10.1117/12.2290379

KEYWORDS: Liquid crystals, Mid-IR, Waveguides, Beam steering, Chalcogenide glass, LIDAR

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Proceedings Article | 22 February 2018 Paper

Polarization sensitivity of ordered and random antireflective surface structures in silica and spinel

J. Frantz, J. Selby, L. Busse, L. Shaw, I. Aggarwal, J. Sanghera

Proceedings Volume 10528, 105281E (2018) https://doi.org/10.1117/12.2289898

KEYWORDS: Reflectivity, Spinel, Polarization, Transmittance, Diffraction, Silica, Thin film coatings, Antireflective coatings, Optical coatings, Reflection

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Proceedings Article | 13 November 2017 Paper

Laser damage of optical windows with random antireflective surface structures on both interfaces

Christopher Wilson, Matthew Potter, Lynda Busse, Jesse Frantz, L. Brandon Shaw, Jas Sanghera, Ishwar Aggarwal, Menelaos Poutous

Proceedings Volume 10447, 1044706 (2017) https://doi.org/10.1117/12.2279614

KEYWORDS: Laser induced damage, Antireflective coatings, Thin films, Laser damage threshold, Silica, Interfaces, Scanning electron microscopy, Windows, Reflection, Reflectivity

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Proceedings Article | 5 October 2017 Presentation + Paper

Chalcogenide negative curvature fibers

Curtis Menyuk, Chengli Wei, R. Joseph Weiblen, Jonathan Hu, Rafael Gattass, L. Brandon Shaw, Jasbinder Sanghera

Proceedings Volume 10435, 104350I (2017) https://doi.org/10.1117/12.2279958

KEYWORDS: Optical fibers, Chalcogenides, Optical simulations, Silica, Carbon dioxide lasers, Photonic crystal fibers, Mid-IR

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Proceedings Article | 23 August 2017 Paper

Crystal fiber lasers

W. Kim, S. Bayya, L. B. Shaw, J. Myers, S. Qadri, R. Thapa, C. Askins, J. Peele, D. Rhonehouse, S. Bowman, D. Gibson, Joseph Kolis, Brad Stadleman, J. Sanghera

Proceedings Volume 10382, 103820Q (2017) https://doi.org/10.1117/12.2275332

KEYWORDS: Crystals, Laser crystals, Fiber lasers, Glasses, High power fiber lasers, Optical fibers, Laser scattering

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Proceedings Article | 7 June 2017 Presentation

Antireflective surface structures on infrared optics (Conference Presentation)

Lynda Busse, Jesse Frantz, L. Brandon Shaw, Shyam Bayya, Guillermo Villalobos, Ishwar Aggarwal, Jas Sanghera

Proceedings Volume 10181, 101810I (2017) https://doi.org/10.1117/12.2262893

KEYWORDS: Reflection, Infrared imaging, Infrared radiation, Optical coatings, Antireflective coatings, Reactive ion etching, Imaging systems, Defense and security, Refractive index, Pollution control

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Proceedings Article | 7 June 2017 Presentation

Broadband, ultralow reflectance surface structures on silica windows for high-energy laser applications (Conference Presentation)

Lynda Busse, Jesse Frantz, L. Brandon Shaw, Menelaos Poutous, Ishwar Aggarwal, Jasbinder Sanghera

Proceedings Volume 10179, 1017905 (2017) https://doi.org/10.1117/12.2262873

KEYWORDS: Silica, Antireflective coatings, Reflectivity, Glasses, Laser applications, Laser induced damage, Laser energy, Optical coatings, Laser damage threshold, Resistance

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Proceedings Article | 11 May 2017 Paper

Mid-infrared imaging fiber bundle

Francois Chenard, Oseas Alvarez, Dan Gibson, L. Brandon Shaw, Jas Sanghera

Proceedings Volume 10181, 101810V (2017) https://doi.org/10.1117/12.2269076

KEYWORDS: Chalcogenide glass, Cladding, Mid-IR, Thermography, Chalcogenides, Infrared imaging, Infrared radiation, Coherence imaging, Infrared cameras, Cameras, Defense technologies, Glasses

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Proceedings Article | 11 May 2017 Paper

Non-mechanical beam steering in the mid-wave infrared

Jesse Frantz, Jason Myers, Robel Bekele, Christopher Spillmann, Jawad Naciri, Jakub Kolacz, Henry Gotjen, Leslie Shaw, Jasbinder Sanghera, Bennett Sodergren, Ying-Ju Wang, Scott Rommel, Mike Anderson, Scott Davis, Michael Ziemkiewicz

Proceedings Volume 10181, 101810X (2017) https://doi.org/10.1117/12.2271898

KEYWORDS: Electrodes, Nanostructures, Mid-IR, Beam steering, Liquid crystals, Waveguides, Chalcogenide glass, LIDAR, Short wave infrared radiation, Near infrared, Chalcogenides

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Proceedings Article | 19 April 2017 Presentation

Single-crystal fiber lasers for high-power applications (Conference Presentation)

Shyam Bayya, L. Brandon Shaw, Woohong Kim, Charles Askins, Jason Myers, Steve Bowman, Daniel Gibson, Noor Qadri, Jasbinder Sanghera, John Peele, Rajesh Thapa, Daniel Rhonehouse

Proceedings Volume 10100, 1010005 (2017) https://doi.org/10.1117/12.2252726

KEYWORDS: Laser development, Optical fibers, Laser scattering, Scattering, Crystals, Fiber lasers, Glasses, Laser crystals, YAG lasers, Doping

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Proceedings Article | 20 February 2017 Presentation + Paper

Control of spectral transmission enhancement properties of random anti-reflecting surface structures fabricated using gold masking

Abigail Eckart, Gopal Sapkota, Matthew Potter, Lynda Busse, Jesse Frantz, L. Brandon Shaw, Jasbinder Sanghera, Ishwar Aggarwal, Menelaos Poutous

Proceedings Volume 10115, 101150B (2017) https://doi.org/10.1117/12.2252382

KEYWORDS: Gold, Reactive ion etching, Annealing, Scattering, Silica, Plasma etching, Reflection, Plasma, Etching, Scanning electron microscopy

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Proceedings Article | 16 February 2017 Paper

Integrated optic waveguides in gallium lanthanum sulfide glass for mid-IR applications

J. Frantz, J. Myers, L. Shaw, J. Sanghera

Proceedings Volume 10100, 101000T (2017) https://doi.org/10.1117/12.2253035

KEYWORDS: Mid-IR, Integrated optics, Waveguides, Glasses, Chalcogenides, Crystals, Reactive ion etching, Rare earth doped glasses, Luminescence, Information operations, Sapphire

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Proceedings Article | 6 December 2016 Paper

Entry and exit facet laser damage of optical windows with random antireflective surface structures

Gopal Sapkota, Jason Case, Matthew Potter, Lynda Busse, L. Brandon Shaw, Jasbinder Sanghera, Ishwar Aggarwal, Menelaos Poutous

Proceedings Volume 10014, 1001404 (2016) https://doi.org/10.1117/12.2244540

KEYWORDS: Microscopes, Laser induced damage, Silica, Antireflective coatings, Resistance, Q switching, Reflectivity, Scanning electron microscopy, Transmittance, Q switched lasers

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Nanosecond duration, high intensity and high average power laser pulses induce damage on uncoated optics, due to localized field enhancement at the exit surface of the components. Anti-reflection (AR) coated optics, due to their (multiple) thin film boundaries, have similar field enhancement regions, which lead to laser damage on both entry and exit sides. Nano-scale structured optical interfaces with AR performance (ARSS) have been widely demonstrated, and found to have higher laser damage resistance than conventional AR coatings. Comprehensive tests of optical entry and exit structured-surface laser damage using nanosecond pulses for ARSS are not widely available. We measured the laser damage of random anti-reflective surface structures (rARSS), on planar, optical quality, fused silica substrates, using single 6-8ns duration pulses at 1064 nm wavelength. The single-sided rARSS substrates were optimized for Fresnel reflectance suppression at 1064 nm, and the measured transmittance at normal incidence was increased by 3.2%, with a possible theoretical maximum of 3.5%. The high energy laser beam was focused to increase the incident intensity, in order to probe values above and below the damage thresholds reported in the literature. The source laser Q-switch durations were used to directly control incident fluence. Multiple locations were tested for each Q-switch setting, to build a statistical relationship between the fluence and damaging events. Single-sided, AR random surface structured substrates were tested, using entry and exit side orientations, to determine any effects the random structures may have in the damage induced by the field enhancement on the exit side. We found that the AR randomly structured surfaces have a higher resistance, to the onset of laser damage, when they are located at the entry (structured) side of the substrates. In comparison, when the same AR random structures are in the beam exit side of the substrates, the onset of laser damage occurs at lower fluence values. All tests resulting in damage of the optical-quality polished fused silica substrates, and those with the structures on the exit side of the samples, are ballistic in nature, showing surface cracks and outward-directed debris craters, all occurring at the beam exit facet. Of interest are the results from tests completed with the rARSS located on the beam entry side; the damage caused by these tests was not typically ballistic in nature (inward directed craters) and occurred on the structured side of the samples.

Proceedings Article | 15 September 2016 Presentation + Paper

Characterization of random anti-reflecting surface structures and their polarization response at off-normal angles of incidence

Gopal Sapkota, Jason Case, Lynda Busse, Jesse Frantz, L. Brandon Shaw, Jasbinder Sanghera, Ishwar Aggarwal, Menelaos Poutous

Proceedings Volume 9927, 992712 (2016) https://doi.org/10.1117/12.2235380

KEYWORDS: Polarization, Silica, Etching, Surface finishing, Reflectivity, Gradient-index optics, Refractive index, Transmittance, Polishing, Reflection

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Proceedings Article | 7 September 2016 Paper

Cladded single crystal fibers for high power fiber lasers

W. Kim, B. Shaw, S. Bayya, C. Askins, J. Peele, D. Rhonehouse, J. Meyers, R. Thapa, D. Gibson, J. Sanghera

Proceedings Volume 9958, 99580O (2016) https://doi.org/10.1117/12.2239218

KEYWORDS: Optical fibers, Crystals, Glasses, Laser crystals, YAG lasers, High power fiber lasers, Fiber lasers, Cladding, Capillaries, Silica

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Proceedings Article | 15 June 2015 Paper

Temperature assisted band-gap engineering in all-solid chalcogenide holey fiber for mid-IR application

Ajanta Barh, R. Varshney, B. Pal, J. Sanghera, L. Shaw

Proceedings Volume 9654, 96541P (2015) https://doi.org/10.1117/12.2182330

KEYWORDS: Mid-IR, Glasses, Micro optical fluidics, Chalcogenides, Optical filters, Structured optical fibers, Thermal optics, Photonic crystals, Cladding, Sensors

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Proceedings Article | 10 September 2014 Paper

Synthesis of high purity metal oxide nanoparticles for optical applications

C. Baker, W. Kim, E. Friebele, G. Villalobos, J. Frantz, L. Shaw, B. Sadowski, J. Fontana, M. Dubinskii, J. Zhang, J. Sanghera

Proceedings Volume 9161, 91610D (2014) https://doi.org/10.1117/12.2061082

KEYWORDS: Nanoparticles, Ceramics, Oxygen, Oxides, Spinel, Metals, Fiber lasers, Doping, Particles, Transmittance

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Proceedings Article | 9 June 2014 Paper

Holmium-doped laser materials for eye-safe solid state laser application

Woohong Kim, Steven Bowman, Colin Baker, Guillermo Villalobos, Brandon Shaw, Bryan Sadowski, Michael Hunt, Ishwar Aggarwal, Jasbinder Sanghera

Proceedings Volume 9081, 908105 (2014) https://doi.org/10.1117/12.2050922

KEYWORDS: Holmium, YAG lasers, Ceramics, Crystals, Solid state lasers, Silica, Glasses, Laser applications, Laser crystals, Coating

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Proceedings Article | 12 March 2014 Paper

Single mode fibers with antireflective surface structures for high power laser applications

Lynda Busse, Catalin Florea, L. Brandon Shaw, Ishwar Aggarwal, Jasbinder Sanghera

Proceedings Volume 8961, 89611M (2014) https://doi.org/10.1117/12.2041796

KEYWORDS: Silica, Fiber lasers, Antireflective coatings, Optical fibers, Single mode fibers, High power lasers, Etching, Laser damage threshold, Laser induced damage, Collimators

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Proceedings Article | 28 February 2014 Paper

Antireflective surface structures on optics for high energy lasers

Lynda Busse, Catalin Florea, L. Brandon Shaw, Jesse Frantz, Shyam Bayya, Menelaos Poutous, Rajendra Joshi, Ishwar Aggarwal, Jas Sanghera

Proceedings Volume 8959, 89591L (2014) https://doi.org/10.1117/12.2041025

KEYWORDS: Silica, Antireflective coatings, Ceramics, Spinel, Laser damage threshold, Crystals, Reflection, Lenses, Laser applications, Surface finishing

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SPIE Journal Paper | 13 January 2014 Open Access

Bend loss in multimode chalcogenide fiber at infrared wavelengths

Rafael Gattass, Frederic Kung, Lynda Busse, L. Brandon Shaw, Jasbinder Sanghera

OE, Vol. 53, Issue 01, 010502, (January 2014) https://doi.org/10.1117/12.10.1117/1.OE.53.1.010502

KEYWORDS: Multimode fibers, Chalcogenides, Infrared radiation, Cladding, Optical fibers, Signal attenuation, Mid-IR, FT-IR spectroscopy, Packaging, Absorption

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Proceedings Article | 15 October 2013 Paper

Maximizing the bandwidth while minimizing the spectral fluctuations using supercontinuum generation in photonic crystal chalcogenide fibers

C. Menyuk, R. Weiblen, J. Hu, L. Shaw, J. Sanghera, I. Aggarwal

Proceedings Volume 8898, 88980C (2013) https://doi.org/10.1117/12.2031967

KEYWORDS: Chalcogenides, Supercontinuum generation, Photonic crystals, Solitons, Visible radiation, Mid-IR, Silica, Four wave mixing, Dispersion, Raman spectroscopy

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Proceedings Article | 18 June 2013 Paper

New multiband IR imaging optics

Shyam Bayya, Jasbinder Sanghera, Woohong Kim, Daniel Gibson, Erin Fleet, Brandon Shaw, Michael Hunt, Ishwar Aggarwal

Proceedings Volume 8704, 870428 (2013) https://doi.org/10.1117/12.2016332

KEYWORDS: Glasses, Long wavelength infrared, Imaging systems, Mid-IR, Short wave infrared radiation, Infrared imaging, Ceramics, Optical design, Chemical elements, Germanium

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Proceedings Article | 4 June 2013 Paper

Recent advancements in anti-reflective surface structures (ARSS) for near- to mid-infrared optics

Catalin Florea, Lynda Busse, Shyam Bayya, Brandon Shaw, Ish Aggarwal, Jas Sanghera

Proceedings Volume 8708, 87080P (2013) https://doi.org/10.1117/12.2016080

KEYWORDS: Silica, Spinel, Crystals, Ceramics, Nd:YAG lasers, Surface finishing, Reflection, Antireflective coatings, Laser damage threshold, Scanning electron microscopy

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Proceedings Article | 31 May 2013 Paper

Thermal and vibration testing of ruggedized IR-transmitting fiber cables

Lynda Busse, Fred Kung, Catalin Florea, Brandon Shaw, Ishwar Aggarwal, Jas Sanghera

Proceedings Volume 8720, 87200T (2013) https://doi.org/10.1117/12.2016156

KEYWORDS: Eye, Fiber lasers, Thermography, High power lasers, Reflection, Infrared lasers, Polishing, Reliability, Mid-IR, Humidity

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Proceedings Article | 23 May 2013 Paper

Recent advancements in transparent ceramics and crystal fibers for high power lasers

W. Kim, C. Baker, G. Villalobos, C. Florea, D. Gibson, L. Shaw, S. Bowman, S. Bayya, B. Sadowski, M. Hunt, C. Askins, J. Peele, I. Aggarwal, J. Sanghera

Proceedings Volume 8733, 87330V (2013) https://doi.org/10.1117/12.2018421

KEYWORDS: Optical fibers, Crystals, Ceramics, Glasses, Laser crystals, Fiber lasers, Laser applications, High power lasers, Cladding, Laser development

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Proceedings Article | 18 March 2013 Paper

Doped sesquioxide ceramic for eye-safe solid state laser materials

Woohong Kim, Colin Baker, Catalin Florea, Jesse Frantz, Guillermo Villalobos, Brandon Shaw, Steve Bowman, Shawn O'Connor, Bryan Sadowski, Michael Hunt, Ishwar Aggalwar, Jasbinder Sanghera

Proceedings Volume 8599, 85990J (2013) https://doi.org/10.1117/12.2004524

KEYWORDS: Ceramics, Holmium, Coating, Solid state lasers, Ions, Crystals, Doping, Lutetium, Transmittance, YAG lasers

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Proceedings Article | 11 March 2013 Paper

Environmental testing and laser transmission results for ruggedized high power IR fiber cables

Lynda Busse, Frederic Kung, Catalin Florea, Brandon Shaw, Ishwar Aggarwal, Jas Sanghera

Proceedings Volume 8621, 86210Y (2013) https://doi.org/10.1117/12.2005004

KEYWORDS: Fiber lasers, Eye, Thermography, Mid-IR, Chalcogenides, Reflection, Polishing, Reliability, High power lasers, Laser induced damage

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Proceedings Article | 11 March 2013 Paper

Non-radiative decay of holmium-doped laser materials

Steven Bowman, Shawn O'Connor, Nicholas Condon, E. Joseph Friebele, Woohong Kim, B. Shaw, R. Quimby

Proceedings Volume 8638, 863803 (2013) https://doi.org/10.1117/12.2007511

KEYWORDS: Luminescence, Holmium, Absorption, Crystals, Silica, ZBLAN, YAG lasers, Laser development, Thulium, Ytterbium

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Proceedings Article | 26 February 2013 Paper

Crystal fibers for high power lasers

W. Kim, C. Florea, D. Gibson, J. Peele, C. Askins, B. Shaw, S. Bowman, S. O'Connor, S. Bayya, I. Aggarwal, J. Sanghera

Proceedings Volume 8601, 86012Z (2013) https://doi.org/10.1117/12.2004632

KEYWORDS: Crystals, Optical fibers, Glasses, Laser crystals, Fiber lasers, YAG lasers, Cladding, Ceramics, High power lasers, Ions

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Proceedings Article | 8 November 2012 Paper

Single crystal fibers for high power lasers

W. Kim, C. Florea, C. Baker, D. Gibson, L. B. Shaw, S. Bowman, S. O'Connor, G. Villalobos, S. Bayya, I. Aggarwal, J. Sanghera

Proceedings Volume 8547, 85470K (2012) https://doi.org/10.1117/12.974848

KEYWORDS: Optical fibers, Crystals, Fiber lasers, Laser crystals, Ceramics, Polishing, YAG lasers, Image quality, Surface finishing, High power lasers

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SPIE Journal Paper | 5 October 2012

Ceramic windows and gain media for high-energy lasers

Woohong Kim, Guillermo Villalobos, Colin Baker, Jesse Frantz, Brandon Shaw, Shyam Bayya, Bryan Sadowski, Ishwar Aggarwal, Michael Hunt, Jasbinder Sanghera

OE, Vol. 52, Issue 2, 021003, (October 2012) https://doi.org/10.1117/12.10.1117/1.OE.52.2.021003

KEYWORDS: Ceramics, Ytterbium, Spinel, Lutetium, Composites, Holmium, Absorption, Glasses, Silica, Luminescence

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Proceedings Article | 2 March 2012 Paper

Recent developments in the fabrication of infrared fiber Bragg gratings

Lynda Busse, Catalin Florea, Brandon Shaw, Jas Sanghera, Vinh Nguyen, Geoff Chin, Ishwar Aggarwal

Proceedings Volume 8257, 82570G (2012) https://doi.org/10.1117/12.909302

KEYWORDS: Glasses, Reflectivity, Doping, Infrared radiation, Silver, Absorption, Fiber Bragg gratings, Lead, Arsenic, Copper

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Proceedings Article | 15 February 2012 Paper

Ceramic materials for high power solid state lasers

W. Kim, C. Baker, G. Villalobos, L. B. Shaw, B. Sadowski, J. Frantz, I. D. Aggarwal, J. Sanghera

Proceedings Volume 8235, 823508 (2012) https://doi.org/10.1117/12.924132

KEYWORDS: Ceramics, Particles, Ytterbium, High power lasers, Solid state lasers, Lutetium, YAG lasers, Crystals, Oxygen, Liquids

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Proceedings Article | 5 October 2011 Paper

Development of ceramic laser host materials.

Jasbinder Sanghera, Woohong Kim, Guillermo Villalobos, Brandon Shaw, Colin Baker, Jesse Frantz, Michael Hunt, Bryan Sadowski, Ishwar Aggarwal

Proceedings Volume 8187, 81870G (2011) https://doi.org/10.1117/12.903736

KEYWORDS: Ceramics, Crystals, YAG lasers, Pulsed laser operation, Nd:YAG lasers, Laser crystals, Laser development, Ytterbium, Composites, Scattering

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Proceedings Article | 3 June 2011 Paper

Mid-infrared optical fiber Fourier transform infrared spectrometer

Kenneth Ewing, L. Brandon Shaw, Rick Kim, Rafael Gattass, Jas Sanghera, Ish Aggarwal

Proceedings Volume 8018, 80180U (2011) https://doi.org/10.1117/12.883529

KEYWORDS: Optical fibers, FT-IR spectroscopy, Mid-IR, Infrared spectroscopy, Sensors, Interferometers, Chalcogenides, Infrared radiation, Supercontinuum sources, Spectroscopy

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Proceedings Article | 13 May 2011 Paper

IR imaging bundles for HWIL testing

Brandon Shaw, Dan Gibson, Vinh Nguyen, Rafael Gattass, Jas Sanghera, Ishwar Aggarwal

Proceedings Volume 8015, 801503 (2011) https://doi.org/10.1117/12.884536

KEYWORDS: Infrared imaging, Sensors, Projection systems, Infrared sensors, Chalcogenides, Analytical research, Fiber lasers, Imaging arrays, Fiber couplers, Adhesives

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Proceedings Article | 11 May 2011 Paper

Transparent ceramics for high-power solid-state lasers

Jasbinder Sanghera, Woohong Kim, Guillermo Villalobos, Colin Baker, Jesse Frantz, Brandon Shaw, Shyam Bayya, Bryan Sadowski, Michael Hunt, Ishwar Aggarwal

Proceedings Volume 8039, 803903 (2011) https://doi.org/10.1117/12.882806

KEYWORDS: Ceramics, Spinel, High power lasers, Absorption, Solid state lasers, Sapphire, Crystals, YAG lasers, Transparency, Fabrication

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Proceedings Article | 1 March 2011 Paper

Improved laser damage threshold for chalcogenide glasses through surface microstructuring

Catalin Florea, Jasbinder Sanghera, Lynda Busse, Brandon Shaw, Ishwar Aggarwal

Proceedings Volume 7946, 794610 (2011) https://doi.org/10.1117/12.877292

KEYWORDS: Optical fibers, Glasses, Laser damage threshold, Silicon, Chalcogenide glass, Nickel, Antireflective coatings, Laser induced damage, Data modeling, FT-IR spectroscopy

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Proceedings Article | 22 February 2011 Paper

All-fiber mid-IR supercontinuum source from 1.5 to 5 µm

L. Brandon Shaw, Rafael Gattass, Jas Sanghera, Ishwar Aggarwal

Proceedings Volume 7914, 79140P (2011) https://doi.org/10.1117/12.877772

KEYWORDS: Dispersion, Mid-IR, Supercontinuum sources, Chalcogenides, Fiber lasers, Raman spectroscopy, Supercontinuum generation, Step index fibers, Optical fibers, Erbium

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Proceedings Article | 16 February 2011 Paper

Ceramic laser materials

Jasbinder Sanghera, Brandon Shaw, Woohong Kim, Guillermo Villalobos, Colin Baker, Jesse Frantz, Michael Hunt, Bryan Sadowski, Ishwar Aggarwal

Proceedings Volume 7912, 79121Q (2011) https://doi.org/10.1117/12.879521

KEYWORDS: Ceramics, Crystals, YAG lasers, Pulsed laser operation, Nd:YAG lasers, Laser crystals, Composites, Laser scattering, Scattering, Ions

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Proceedings Article | 30 April 2007 Paper

IR fiber sources for scene projection

L. B. Shaw, J. Sanghera, I. Aggarwal

Proceedings Volume 6544, 65440K (2007) https://doi.org/10.1117/12.724271

KEYWORDS: Mid-IR, Infrared imaging, Long wavelength infrared, Supercontinuum sources, Glasses, Optical fibers, Fiber lasers, Chalcogenides, Ions, Chalcogenide glass

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Proceedings Article | 20 February 2007 Paper

Chalcogenide glass fiber-based MID-IR sources and applications

Ishwar Aggarwal, L. Brandon Shaw, Jas Sanghera

Proceedings Volume 6453, 645312 (2007) https://doi.org/10.1117/12.706532

KEYWORDS: Glasses, Raman spectroscopy, Fiber lasers, Chalcogenide glass, Silica, Mid-IR, Fluorine, Chalcogenides, Long wavelength infrared, Selenium

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Proceedings Article | 22 April 2005 Paper

Chalcogenide glass for mid- and longwave IR fiber lasers

Ishwar Aggarwal, L. Shaw, Jasbinder Sanghera

Proceedings Volume 5709, (2005) https://doi.org/10.1117/12.596994

KEYWORDS: Fiber lasers, Raman spectroscopy, Mid-IR, Glasses, Chalcogenide glass, Silica, Fluorine, Long wavelength infrared, Amplifiers, Infrared lasers

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SPIE Journal Paper | 1 October 2003 Open Access

Delivery of midinfrared (6 to 7-μm) laser radiation in a liquid environment using infrared-transmitting optical fibers

Mark Mackanos, E. Duco Jansen, Brandon Shaw, Jasbinder Sanghera, Ishwar Aggarwal, Abraham Katzir

JBO, Vol. 8, Issue 04, (October 2003) https://doi.org/10.1117/12.10.1117/1.1606460

KEYWORDS: Tissues, Liquids, Silver, Absorption, Laser ablation, Free electron lasers, Arsenic, Fiber lasers, Laser damage threshold, Laser tissue interaction

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Proceedings Article | 3 July 2003 Paper

Rare-earth-doped chalcogenide glass for mid- and long-wave IR fiber lasers

L. Brandon Shaw, Peter Thielen, Jasbinder Sanghera, Shyam Bayya, Ishwar Aggarwal

Proceedings Volume 4974, (2003) https://doi.org/10.1117/12.478276

KEYWORDS: Mid-IR, Fiber lasers, Glasses, Long wavelength infrared, Terbium, Chalcogenide glass, Dysprosium, Quantum efficiency, Infrared lasers, Infrared spectroscopy

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Proceedings Article | 28 March 2002 Paper

Raman amplification in As-Se fiber

Peter Thielen, L. Brandon Shaw, Pablo Pureza, Vinh Nguyen, Jasbinder Sanghera, Ishwar Aggarwal

Proceedings Volume 4628, (2002) https://doi.org/10.1117/12.460818

KEYWORDS: Raman spectroscopy, Glasses, Silica, Fiber amplifiers, Raman scattering, Transparency, Amplifiers, Chalcogenide glass, Selenium, Long wavelength infrared

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Proceedings Article | 31 August 2001 Paper

Development of IR-emitting infrared fibers at the Naval Research Laboratory

L. Brandon Shaw, Brian Cole, Jasbinder Sanghera, Ishwar Aggarwal, Frederic Kung, Shyam Bayya, Reza Mossadegh, Peter Thielen, James Kircher, Robert Lee Murrer

Proceedings Volume 4366, (2001) https://doi.org/10.1117/12.438060

KEYWORDS: Optical fibers, Mid-IR, Long wavelength infrared, Chalcogenide glass, Ions, Glasses, Analytical research, Terbium, Infrared radiation, Prototyping

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Proceedings Article | 17 May 2000 Paper

IR fiber optics for biomedical applications

Jasbinder Sanghera, L. Brandon Shaw, David Talley, Lynda Busse, Ishwar Aggarwal

Proceedings Volume 3907, (2000) https://doi.org/10.1117/12.386287

KEYWORDS: Chalcogenides, Biomedical optics, Surgery, Near field scanning optical microscopy, Spectroscopy, Laser therapeutics, Fiber lasers, Microscopy, Attenuated total reflectance, Free electron lasers

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Proceedings Article | 19 April 2000 Paper

IR fiber optics development at the Naval Research Laboratory

Jasbinder Sanghera, Lynda Busse, Viet Nguyen, Reza Mossadegh, Frederic Kung, Brian Cole, L. Brandon Shaw, Pablo Pureza, Robert Miklos, Ishwar Aggarwal, Yoon-Soo Park

Proceedings Volume 3950, (2000) https://doi.org/10.1117/12.382160

KEYWORDS: Missiles, Head, Glasses, Fiber lasers, Infrared countermeasures, Chalcogenide glass, Fiber optics, Analytical research, Scattering, Defense and security

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Proceedings Article | 10 December 1999 Paper

Infrared optical fibers and their applications

Jasbinder Sanghera, L. Brandon Shaw, Lynda Busse, Vinh Nguyen, Brian Cole, Reza Mossadegh, Pablo Pureza, Robert Miklos, Frederic Kung, David Talley, Dominick Roselle, Ishwar Aggarwal

Proceedings Volume 3849, (1999) https://doi.org/10.1117/12.372807

KEYWORDS: Optical fibers, Glasses, Chalcogenides, Chalcogenide glass, Multimode fibers, Infrared radiation, Fiber lasers, Scattering, Absorption, Fiber optics

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Proceedings Article | 21 April 1999 Paper

Infrared-transmitting fiber optics for biomedical applications

Jasbinder Sanghera, L. Brandon Shaw, Lynda Busse, David Talley, Ishwar Aggarwal

Proceedings Volume 3596, (1999) https://doi.org/10.1117/12.346713

KEYWORDS: Chalcogenides, Biomedical optics, Near field scanning optical microscopy, Infrared radiation, Spectroscopy, Glasses, Attenuated total reflectance, Fiber optics, Microscopy, Field spectroscopy

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Proceedings Article | 13 July 1998 Paper

Rare-earth-doped glass fibers as infrared sources for IRSS

L. Brandon Shaw, David Schaafsma, Brian Cole, Barry Harbison, Jasbinder Sanghera, Ishwar Aggarwal

Proceedings Volume 3368, (1998) https://doi.org/10.1117/12.316395

KEYWORDS: Chalcogenide glass, Rare earth doped glasses, Infrared radiation, Scene simulation, Mid-IR, Long wavelength infrared

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Proceedings Article | 1 July 1991 Paper

Fabrication of laser materials by laser-heated pedestal growth

Robert Chang, Somnath Sengupta, Leslie Shaw, Nicholas Djeu

Proceedings Volume 1410, (1991) https://doi.org/10.1117/12.43592

KEYWORDS: Crystals, Laser crystals, Garnet, Ions, Nd:YAG lasers, Oxides, Neodymium, Solid state lasers, Crystallography, Erbium

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Showing 5 of 77 publications

Proceedings Volume Editor (2)

SPIE Conference Volume | 21 April 2015

Fiber Lasers XII: Technology, Systems, and Applications

SPIE Conference Volume | 26 March 2014

Fiber Lasers XI: Technology, Systems, and Applications

Conference Committee Involvement (17)

Fiber Lasers XXII: Technology and Systems

27 January 2025 | San Francisco, California, United States

Fiber Lasers XXI: Technology and Systems

29 January 2024 | San Francisco, California, United States

Fiber Lasers XX: Technology and Systems

30 January 2023 | San Francisco, California, United States

Fiber Lasers XIX: Technology and Systems

24 January 2022 | San Francisco, California, United States

Fiber Lasers XVIII: Technology and Systems

6 March 2021 | Online Only, California, United States

Fiber Lasers XVII: Technology and Systems

3 February 2020 | San Francisco, California, United States

Fiber Lasers XVI: Technology and Systems

4 February 2019 | San Francisco, California, United States

Fiber Lasers XV: Technology and Systems

29 January 2018 | San Francisco, California, United States

Fiber Lasers XIV: Technology and Systems

30 January 2017 | San Francisco, California, United States

Fiber Lasers XIII: Technology, Systems, and Applications

15 February 2016 | San Francisco, California, United States

Fiber Lasers XII: Technology, Systems, and Applications

9 February 2015 | San Francisco, California, United States

Fiber Lasers XI: Technology, Systems, and Applications

3 February 2014 | San Francisco, California, United States

Fiber Lasers X: Technology, Systems, and Applications

4 February 2013 | San Francisco, California, United States

Fiber Lasers IX: Technology, Systems, and Applications

23 January 2012 | San Francisco, California, United States

Fiber Lasers VIII: Technology, Systems, and Applications

24 January 2011 | San Francisco, California, United States

Fiber Lasers VII: Technology, Systems, and Applications

25 January 2010 | San Francisco, California, United States

Fiber Lasers VI: Technology, Systems, and Applications

26 January 2009 | San Jose, California, United States

Showing 5 of 17 Conference Committees

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