Laser-induced ultrafast phase transitions in solids using optical anisotropy

Michail B. Agranat; Sergei I. Anisimov; Sergei I. Ashitkov; Vladimir E. Fortov; Alexander V. Kirillin; Petr S. Kondratenko; Alexander V. Kostanovskii

doi:10.1117/12.321516

14 September 1998 Laser-induced ultrafast phase transitions in solids using optical anisotropy

Michail B. Agranat, Sergei I. Anisimov, Sergei I. Ashitkov, Vladimir E. Fortov, Alexander V. Kirillin, Petr S. Kondratenko, Alexander V. Kostanovskii

Author Affiliations +

Proceedings Volume 3343, High-Power Laser Ablation; (1998) https://doi.org/10.1117/12.321516
Event: High-Power Laser Ablation, 1998, Santa Fe, NM, United States

Abstract

A new method of crystalline order detection in highly absorbing anisotropic crystals is worked out. The method is based on partial transformation of incident p-polarized electromagnetic wave into s-polarized reflected wave due to optical anisotropy. The method makes possible to follow changes of crystalline structure in thin (10^-6 - 10^-5 cm) surface layers of solids. Using picosecond laser pulses and streak camera 'Agat,' surface melting and evaporation of Zn and C (graphite) are studied. Direct observation of the melting of graphite subjected to picosecond laser pulse is performed. The kinetics of solidification of fused surface layers are studied.

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Michail B. Agranat, Sergei I. Anisimov, Sergei I. Ashitkov, Vladimir E. Fortov, Alexander V. Kirillin, Petr S. Kondratenko, and Alexander V. Kostanovskii "Laser-induced ultrafast phase transitions in solids using optical anisotropy", Proc. SPIE 3343, High-Power Laser Ablation, (14 September 1998); https://doi.org/10.1117/12.321516

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