Dr. P. Radhakrishnan Profile

Dr. P. Radhakrishnan

Professor at International School of Photonics

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Author

Publications (13)

Proceedings Article | 22 September 2015 Paper

Study on cadmium sulphide nanoparticles on blue and green light emitting polymers

C. Pradeep, S. Mathew, M. Namboothiry, C. Vallabhan, P. Radhakrishnan, V. P. Nampoori

Proceedings Volume 9566, 95661Z (2015) https://doi.org/10.1117/12.2188369

KEYWORDS: Nanoparticles, Polymers, Cadmium, Cadmium sulfide, Organic light emitting diodes, Light emitting diodes, Luminescence, Coating, Absorbance, Scientific research

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Proceedings Article | 26 August 2015 Paper

Enhanced brightness from all solution processable biopolymer LED

C. Pradeep, M. Namboothiry, C. Vallabhan, P. Radhakrishnan, V. P. N. Nampoori

Proceedings Volume 9557, 95570O (2015) https://doi.org/10.1117/12.2190836

KEYWORDS: Light emitting diodes, Polymers, Electron beam lithography, Biopolymers, Organic light emitting diodes, Photonics, Luminous efficiency, Aluminum, Scientific research, Molecules

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Proceedings Article | 26 August 2015 Paper

PicoGreen dye as an active medium for plastic lasers

C. Pradeep, C. Vallabhan, P. Radhakrishnan, V. P. N. Nampoori

Proceedings Volume 9557, 95570N (2015) https://doi.org/10.1117/12.2190946

KEYWORDS: Luminescence, Thin films, Molecules, Absorption, Nd:YAG lasers, Ocean optics, Laser applications, Photonics, Water, Spectrophotometry

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Proceedings Article | 2 May 2014 Paper

Multipolar second-harmonic generation from films of chalcogenide glasses

A. Slablab, K. Koskinen, R. Czaplicki, N. Karunakaran, I. Sebastian, C. Pradeep Chandran, M. Kailasnath, P. Radhakrishnan, M. Kauranen

Proceedings Volume 9126, 912621 (2014) https://doi.org/10.1117/12.2051477

KEYWORDS: Second-harmonic generation, Polarization, Chalcogenide glass, Data modeling, Glasses, Thin films, Signal detection, Antimony, Beam controllers, Selenium

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Proceedings Article | 16 May 2012 Paper

Filamentation characteristics of focused fs pulses in atmosphere

S. Sreeja, V. Rakesh Kumar, Ch. Leela, P. Radhakrishnan, Surya Tewari, S. Venugopal Rao, P. Prem Kiran

Proceedings Volume 8434, 84340U (2012) https://doi.org/10.1117/12.921633

KEYWORDS: Atmospheric propagation, Femtosecond phenomena, Sodium, Laser beam propagation, Polarization, Atmospheric sciences, Nonlinear optics, Diffraction, LIDAR, Pulsed laser operation

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Proceedings Article | 30 January 2012 Paper

Supercontinuum emission from water using fs pulses in the external tight focusing limit

S. Sreeja, S. Venugopal Rao, P. Radhakrishnan, Surya Tewari, P. Prem Kiran

Proceedings Volume 8247, 824718 (2012) https://doi.org/10.1117/12.907278

KEYWORDS: Water, Femtosecond phenomena, Ultrafast phenomena, Wave plates, Plasma, Ionization, Pulsed laser operation, Glasses, Spectroscopy, Gases

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Proceedings Article | 24 August 2011 Paper

Design and development of diaphragm-based EFPI pressure sensor

P. P. Anish, J. Linesh, T. M. Libish, S. Mathew, P. Radhakrishnan

Proceedings Volume 8173, 81731V (2011) https://doi.org/10.1117/12.897830

KEYWORDS: Sensors, Fiber optics sensors, Interferometry, Metals, Fabry–Perot interferometers, Capillaries, Optical fibers, Aluminum, Photonics, Fiber optics

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Proceedings Article | 24 August 2011 Paper

Optical fiber sensor to determine critical mole fractions of alcohol-water binary mixtures

J. Linesh, K. Sudeesh, T. M. Libish, P. Radhakrishnan, V. P. N. Nampoori

Proceedings Volume 8173, 81731U (2011) https://doi.org/10.1117/12.897809

KEYWORDS: Sensors, Fiber optics sensors, Water, Bioalcohols, Binary data, Molecules, Liquids, Molecular interactions, Light scattering, Refractive index

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SPIE Journal Paper | 1 June 2011

Optical engineering by the nanocomposites of ZnO-CdS/TiO₂

Litty Irimpan, Vadakedathu Nampoori, Padmanabhan Radhakrishnan

OE, Vol. 50, Issue 06, 069001, (June 2011) https://doi.org/10.1117/12.10.1117/1.3589297

KEYWORDS: Nanocomposites, Zinc oxide, Luminescence, Cadmium sulfide, Optical engineering, Semiconductors, Absorption, Nanocrystals, Ultraviolet radiation, Composites

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Proceedings Article | 24 February 2010 Paper

Optical characterization of ZnO nanoparticles and nanorods prepared by wet chemical technique at low temperature

Krishna Murari, Ravi Kumar, M. Kailasnath, P. Radhakrishnan, V. Nampoori

Proceedings Volume 7610, 761011 (2010) https://doi.org/10.1117/12.848540

KEYWORDS: Nanoparticles, Zinc oxide, Luminescence, Scanning electron microscopy, FT-IR spectroscopy, Nanostructures, Absorption, Potassium, Spectroscopy, Nanorods

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Proceedings Article | 17 September 2007 Paper

Laser emission from dye mixture doped polymer optical fiber

Sheeba Nambiar, Thomas Kannampuzha Jhony, Rajesh Mandamparambil, Nitish Kumar, Praveen Ashok, Vadakedathu Nampoori, Radhakrishnan Padmanabhan

Proceedings Volume 6698, 66981O (2007) https://doi.org/10.1117/12.732823

KEYWORDS: Rhodium, Polymer optical fibers, Fiber lasers, Rhodamine B, Rhodamine, Energy transfer, Luminescence, Dye lasers, Polymethylmethacrylate, Phase only filters

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Proceedings Article | 5 September 2006 Paper

Design and fabrication of dye doped polymer optical fiber for optical amplification

M. Rajesh, M. Sheeba, K. Geetha, C. Vallabhan, P. Radhakrishnan, V. Nampoori

Proceedings Volume 6289, 628919 (2006) https://doi.org/10.1117/12.677850

KEYWORDS: Polymer optical fibers, Optical amplifiers, Polymers, Fiber amplifiers, Phase only filters, Rhodamine, Luminescence, Beam splitters, Optical communications, Optical fibers

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SPIE Journal Paper | 1 July 2006

Characterization of rhodamine 6G doped polymer optical fiber by side illumination fluorescence

Rajesh Mandamparambil Nair, K. Geetha, Sheeba Nambiar, C. Vallabhan, P. Radhakrishnan, V. Nampoori

OE, Vol. 45, Issue 07, 075003, (July 2006) https://doi.org/10.1117/12.10.1117/1.2221553

KEYWORDS: Luminescence, Rhodamine, Polymer optical fibers, Polymers, Signal attenuation, Wave propagation, Light wave propagation, Absorption, Photonics, Fiber lasers

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Showing 5 of 13 publications

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