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Journal of Nanophotonics • Open Access

Laser emission from self-assembled active photonic crystal matrix
Author(s): Sunita Kedia; Ramarao Vijaya; Alok K. Ray; Sucharita Sinha

Paper 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.

Paper Details

Date Published: 1 October 2010
PDF: 7 pages
J. Nanophoton. 4(1) 049506 doi: 10.1117/1.3506524
Published in: Journal of Nanophotonics Volume 4, Issue 1
Show Author Affiliations
Sunita Kedia, Indian Institute of Technology Bombay (India)
Ramarao Vijaya, Indian Institute of Technology Bombay (India)
Alok K. Ray, Bhabha Atomic Research Ctr. (India)
Sucharita Sinha, Bhabha Atomic Research Ctr. (India)

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