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.
© 2000 Optical Society of America
(030.5260) Coherence and statistical optics : Photon counting
(030.5290) Coherence and statistical optics : Photon statistics
(170.6280) Medical optics and biotechnology : Spectroscopy, fluorescence and luminescence
(170.6510) Medical optics and biotechnology : Spectroscopy, tissue diagnostics
Giannis Zacharakis, Nektarios A. Papadogiannis, George Filippidis, and Theodore G. Papazoglou, "Photon statistics of laserlike emission from polymeric scattering gain media," Opt. Lett. 25, 923-925 (2000)