期刊
OPTICS LETTERS
卷 39, 期 3, 页码 655-658出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.39.000655
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资金
- CONACyT [154464]
- DGAPA-UNAM [PAPIIT-IN102112]
- CCADET-UNAM
- ICyTDF in Mexico City
We present an experimental analysis of the angular distribution of the emission of a random laser (RL) operating in the diffusive regime (similar to 1% volume fraction of scatterers). The RL ensemble was made of silica particles suspended in a 1: 1 methanol: water matrix with Rhodamine 6G dye as the active medium. We found that, for specific pumpin-genergy- dependent scattering strength, the RL spectrum reached stable features that were angularly preserved. From the analysis, we propose that this defines a novel parametric condition that may well be the equivalent of the RL critical volume, as proposed by Letokhov. (C) 2014 Optical Society of America
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