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Kvantovaya Elektronika, 2020, Volume 50, Number 2, Pages 114–135 (Mi qe17195)  

Invited paper

Effect of elastic anisotropy on thermally induced distortions of a laser beam in single cubic syngony crystals with radial cooling. Part I

A. G. Vyatkin, E. A. Khazanov

Federal Research Center The Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod

Abstract: We have studied thermally induced distortions of a beam in single cubic syngony crystals of all symmetry groups with an anisotropic elastic stiffness tensor. The arithmetic mean and the difference between the thermally induced phase incursions of eigenpolarisations, as well as the angle of incidence of these polarisations, are calculated for a long rod and a thin disk with radial cooling under uniform volume pumping of the active element. The position of the specific crystal orientations unrelated to its symmetry elements is investigated. The effective values of the thermo-optical constant Q in two specific orientations, as well as the thermo-optical constant P in an arbitrary orientation, are found.

Keywords: high average power lasers, photoelastic effect, thermally induced depolarisation, thermo-optical constants, anisotropy of cubic crystals.

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English version:
Quantum Electronics, 2020, 50:2, 114–135

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Received: 18.10.2019

Citation: A. G. Vyatkin, E. A. Khazanov, “Effect of elastic anisotropy on thermally induced distortions of a laser beam in single cubic syngony crystals with radial cooling. Part I”, Kvantovaya Elektronika, 50:2 (2020), 114–135 [Quantum Electron., 50:2 (2020), 114–135]

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  • http://mi.mathnet.ru/eng/qe/v50/i2/p114

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