4.6 Article

Photon statistics of laserlike emission from polymeric scattering gain media

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OPTICS LETTERS
卷 25, 期 12, 页码 923-925

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OPTICAL SOC AMER
DOI: 10.1364/OL.25.000923

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The coherent properties of the temporally and spectrally narrowed emission of laser-induced fluorescence of organic dyes hosted inside artificial scattering matrices (random lasers) were investigated. The excitation source was a frequency-doubled 200-fs pulsed laser emitting at 400 nm. Spectral and temporal features were simultaneously recorded with a spectrograph and a streak camera operating in photon-counting mode. Photon-number distributions were thus created. The temporal coherence of the laserlike emission above and below the excitation energy threshold was investigated from the photon-number distribution that was obtained. (C) 2000 Optical Society of America. OCIS codes: 030.5290, 030.5260, 170.6510, 170.6280.

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