6 February 2009 Real-time spectroscopy of novel solid state random lasers
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Herein we report efficient random lasing in two powder samples containing rhodamine 6G (Rh6G) doped SiO2 nanoparticles which are either directly dispersed within pure silica particles or embedded in a silica gel matrix which is subsequently ground. Basic properties of random lasing such as emission kinetics, emission spectrum, and stimulated emission threshold are investigated in both novel solid-state materials by real-time spectroscopy. The laser-like emission dynamics of the ground powder obtained out of a bulk silica gel containing 2% Rh6G-SiO2 nanoparticles was accurately described by a light diffusive propagation model. The device behavior is close to a conventional ultrafast Q-switched laser, which is a very interesting feature aimed to further applications.
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Sara García-Revilla, Sara García-Revilla, Joaquín Fernández, Joaquín Fernández, Rolindes Balda, Rolindes Balda, Marcos Zayat, Marcos Zayat, David Levy, David Levy, "Real-time spectroscopy of novel solid state random lasers", Proc. SPIE 7212, Optical Components and Materials VI, 72120K (6 February 2009); doi: 10.1117/12.809032; https://doi.org/10.1117/12.809032

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