Abstract

We report numerical studies on temperature-tunable, multiple-scattering media with gain. We describe Monte Carlo simulations that model the behavior of such a system through a three-dimensional random walk of light in a temperature-dependent disordered medium with amplification. We compare the results of our model with previous experimental results on a disordered dielectric for which the scattering strength could be tuned by changing the external temperature. The agreement between the numerical and experimental results enables us to predict the spectral features of the emission from the tunable random laser under various conditions. Results obtained from new experimental data are consistent with the predictions of the simulations.

© 2004 Optical Society of America

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