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Laser emission from self-assembled active photonic crystal matrix

[+] Author Affiliations
Sunita Kedia, Ramarao Vijaya

Indian Institute of Technology Bombay, Department of Physics, Powai, Mumbai 400076 India

Alok Kumar Ray, Sucharita Sinha

Bhabha Atomic Research Centre, Laser and Plasma Technology Division, Mumbai, 400085 India

J. Nanophoton. 4(1), 049506 (October 7, 2010). doi:10.1117/1.3506524
History: Received September 24, 2010; Revised October 1, 2010; Accepted October 4, 2010; October 7, 2010; Online October 07, 2010
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Abstract

Three-dimensionally ordered photonic crystals were grown using self-assembly technique from Rhodamine-B dye doped polystyrene micro-spheres resulting in a stop band at 611 nm overlapping the emission spectrum of the dye. When excited at a wavelength away from the stop band, using a frequency-doubled Nd:YAG laser, the crystal showed angle-dependent suppression of spontaneous emission of the dye in the wavelength range of the photonic stop band and enhancement at the band edge, in reflection and transmission geometries. Spectral narrowing, a sharp threshold and a highly directional emission, all indicative of stimulated emission, were observed from the active photonic crystal matrix.

© 2010 Society of Photo-Optical Instrumentation Engineers

Citation

Sunita Kedia ; Ramarao Vijaya ; Alok Kumar Ray and Sucharita Sinha
"Laser emission from self-assembled active photonic crystal matrix", J. Nanophoton. 4(1), 049506 (October 7, 2010). ; http://dx.doi.org/10.1117/1.3506524


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