Pump-induced scattering in high-power Ti: Sapphire lasers

Aleksandr A. Tarasov; Hong Chu

doi:10.1117/12.2536732

19 November 2019 Pump-induced scattering in high-power Ti: Sapphire lasers

Aleksandr A. Tarasov, Hong Chu

Proceedings Volume 11181, High-Power Lasers and Applications X; 1118101 (2019) https://doi.org/10.1117/12.2536732
Event: SPIE/COS Photonics Asia, 2019, Hangzhou, China

Abstract

The influence of pump beam spatial modulation on angular divergence and temporal characteristics of subnanosecond gain-switched Ti: Sapphire laser was investigated. It was shown, that the change of Ti: Sapphire refraction index by pump light may result in considerable change of laser characteristics. Spatial modulation with frequencies > 15-20 mm^-1 induce scattering in laser crystal and leads to the increase of angular divergence in lasers with flat resonator mirrors and large Fresnel number. At the same time induced scattering produces coupling of light within laser aperture, which can result in synchronous generation of all active volume and reduced laser pulse duration.

Citation Download Citation

Aleksandr A. Tarasov and Hong Chu "Pump-induced scattering in high-power Ti: Sapphire lasers", Proc. SPIE 11181, High-Power Lasers and Applications X, 1118101 (19 November 2019); https://doi.org/10.1117/12.2536732

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