Amplification and diffusion of spontaneous emission in strongly scattering medium
- 1 June 2000
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 87 (11) , 7623-7628
- https://doi.org/10.1063/1.373432
Abstract
We experimentally examined the threshold of the spectral collapse in dye embedded in a strongly scattering medium as a function of the excitation beam diameter and the transport mean free path in order to find a condition to minimize the threshold. We found a critical transport mean free path, below which the threshold pulse energy is almost independent of the mean free path. Experimental observations are well explained by a theoretical model based on the rate and diffusion equations, which shows that the luminescence spectra are also dependent on the position in the medium.This publication has 19 references indexed in Scilit:
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