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22 September 1997 Lasing without cavity
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Proceedings Volume 3110, 10th Meeting on Optical Engineering in Israel; (1997)
Event: 10th Meeting on Optical Engineering in Israel, 1997, Jerusalem, Israel
Optical gain media filled with strong scatterers present a laser-like emission when optically pumped.Different regimes can be evidenced where amplified spontaneous emission together with multiple scattering play the main role. A mapping technique where both the concentrations of dye molecules and scatterers are independently varied allows to differentiate between those regimes. A simple model based on photon diffusion is presented and threshold for lasing emission is derived, and is compared with the experiment. Qualitative agreement is found, showing that the threshold critically depends on the samples macroscopic size.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Bruno Sfez, Zvi Kotler, S. Margel, and B. Nitzan "Lasing without cavity", Proc. SPIE 3110, 10th Meeting on Optical Engineering in Israel, (22 September 1997);

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