Influence of stimulated Raman scattering on random lasing

O. S. Babych; V. P. Yashchuk

doi:10.1117/12.2507521

4 March 2019 Influence of stimulated Raman scattering on random lasing

O. S. Babych, V. P. Yashchuk

Proceedings Volume 10902, Nonlinear Frequency Generation and Conversion: Materials and Devices XVIII; 109021L (2019) https://doi.org/10.1117/12.2507521
Event: SPIE LASE, 2019, San Francisco, California, United States

Abstract

In multiple scattering media at high excitation intensities, compulsory light scattering (SRS) of organic laser dyes arises simultaneously with their chaotic generation. Together, they create a coupled effect of SRS-RL, in which RL radiation plays a stimulating role for SRS. This radiation stimulates the forced oscillation of the dye molecules at frequencies whose Stokes lines fall within the range of the RL spectrum. As a result, on all these lines there is a SRS. The radiation spectrum of dyes becomes quasilinear, in which, on the background of a continuous component due to RL, there are Stokes lines of SRS corresponding to the segment of the spectrum of Stokes lines of combinational scattering within the range of the RL spectrum. At present, only the influence of RL on the onset of SRS has been investigated, and the reverse effect has not been studied in practice. At the same time, for the understanding of the regularities of the WRC-RL process, the effect is very important, since it can be used practically in Raman scattering spectroscopy. Therefore, the purpose of this work is to study this effect. To this end, the radiation of dyes injected into the vesicular polymer film alone and in the mixture was investigated.

Citation Download Citation

O. S. Babych and V. P. Yashchuk "Influence of stimulated Raman scattering on random lasing", Proc. SPIE 10902, Nonlinear Frequency Generation and Conversion: Materials and Devices XVIII, 109021L (4 March 2019); https://doi.org/10.1117/12.2507521

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KEYWORDS

Laser scattering

Raman scattering

Random lasers

Scattering

Chemical species

Molecules

Radiation effects

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