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25 February 2010 Two-photon pumped random lasing in a dye-doped silica gel powder
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Proceedings Volume 7598, Optical Components and Materials VII; 759804 (2010)
Event: SPIE OPTO, 2010, San Francisco, California, United States
We report the first observation of two-photon pumped random laser action in the ground powder of a silica gel containing rhodamine 6G doped silica nanoparticles. When this solid-state dye system is pumped with 800 nm femtosecond-lasing pulses, random laser-like effects such as spectral narrowing and temporal shortening are observed with a laser-like emission peak centered around 598 nm. A comparison between the emission features, random laser behavior and threshold of random laser action, following one- and two-photon excitations is also performed.
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Sara García-Revilla, Íñigo Solá, Rolindes Balda, Luis Roso, David Levy, Marcos Zayat, and Joaquín Fernández "Two-photon pumped random lasing in a dye-doped silica gel powder", Proc. SPIE 7598, Optical Components and Materials VII, 759804 (25 February 2010);

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