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Ultrafast random laser emission in a dye-doped silica gel powder

AuthorsGarcía-Revilla, Sara; Fernández, Joaquín ; Illarramendi, María A.; García-Ramiro, Begoña; Balda, Rolindes ; Cui, Hongtao ; Zayat, Marcos ; Levy, David
Keywords[OCIS] Lasers and laser optics: Laser materials
[OCIS] Scattering: Multiple scattering
[OCIS] Spectroscopy: Spectroscopy, time-resolved
[OCIS] Ultrafast optics: Ultrafast lasers
Issue Date31-Jul-2008
PublisherOptical Society of America
CitationOptics Express 16(16): 12251-12263 (2008)
AbstractWe report efficient random lasing in a ground powder of a novel solid-state material based on silica gel containing SiO2 nanoparticles embedding rhodamine 6G (Rh6G) dye. Basic properties of random lasing such as emission kinetics, emission spectrum, and threshold of stimulated emission are investigated by using real-time spectroscopy. The laser-like emission dynamics can be accurately described by a light diffusive propagation model. The device behavior is close to a conventional ultrafast Q-switched laser, which is an interesting fact aimed to further applications.
Description13 pages, 7 figures.-- OCIS codes: 140.3380, 300.6500, 290.4210, 320.7090.-- Printed version published on Aug 4, 2008.-- © 2008 Optical Society of America.
Publisher version (URL)http://dx.doi.org/10.1364/OE.16.012251
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