Effect of crystal orientation on a high-power Faraday isolator

Efim A. Khazanov; Nikolay Andreev; Oleg V. Palashov; Anotoly K. Poteomkin; Alexander M. Sergeev; David H. Reitze; Oliver Mehl

doi:10.1117/12.417757

2 March 2001 Effect of crystal orientation on a high-power Faraday isolator

Efim A. Khazanov, Nikolay Andreev, Oleg V. Palashov, Anotoly K. Poteomkin, Alexander M. Sergeev, David H. Reitze, Oliver Mehl

Author Affiliations +

Proceedings Volume 4353, Laser Optics 2000: Control of Laser Beam Characteristics and Nonlinear Methods for Wavefront Control; (2001) https://doi.org/10.1117/12.417757
Event: Laser Optics 2000, 2000, St. Petersburg, Russian Federation

Abstract

The operation of various designs of a Faraday isolator at high average power with an arbitrary orientation of a cubic magneto-optical crystal is studied theoretically. It is shown that in different Faraday isolator designs, different crystal orientations may be optimal from the standpoint of isolation. Thermo-optic and photoelastic constants for terbium gallium garnet crystals grown by different producers were measured. Measurements of self-induced depolarization were made for various orientations of crystallographic axes. The measurements are in good agreement with theoretical predictions. Based on the obtained results it is possible to choose such crystal orientation for Faraday isolators which is optimal from the standpoint of isolation at high average powers.

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Efim A. Khazanov, Nikolay Andreev, Oleg V. Palashov, Anotoly K. Poteomkin, Alexander M. Sergeev, David H. Reitze, and Oliver Mehl "Effect of crystal orientation on a high-power Faraday isolator", Proc. SPIE 4353, Laser Optics 2000: Control of Laser Beam Characteristics and Nonlinear Methods for Wavefront Control, (2 March 2001); https://doi.org/10.1117/12.417757

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KEYWORDS

Crystals

Laser crystals

Optical isolators

Absorption

Photoelasticity

Magnetism

Beam shaping

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