Stimulated Raman scattering of dyes under random lasing in polymeric vesicular films

Details Stimulated Raman scattering of dyes under random lasing in polymeric vesicular films Stimulated Raman scattering of dyes under random lasing in polymeric vesicular films

2010-08-26

arxiv.org/abs/1008.4511v1

Physics

Optics

13 pages, 9 figures, to be published in MCLC

Scientific paper

The random lasing (RL) emission of dyed vesicular polymeric films in diffusive regime of light propagation was investigated under helium temperature. It represents itself the coupling effect of stimulated emission and stimulated Raman scattering (SRS). Due to the effect a set of Raman lines reveal in RL spectrum. Distinguishing feature of the effect is the stimulated emission promotes the Raman lines revealing. Intensity of Raman lines have quadratic trend on pump intensity. Furthermore SRS in this condition has the more structured spectrum than spontaneous Raman one. It makes enable detection even the weak and close located spectral lines.

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