Faraday rotator based on TSAG crystal with  orientation | Zendy

Ryo Yasuhara | Zendy; Ilya Snetkov | Zendy; Aleksey Starobor | Zendy; É. A. Mironov | Zendy; Oleg Palashov | Zendy

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Faraday rotator based on TSAG crystal with <001> orientation

Author(s) -

Ryo Yasuhara,

Ilya Snetkov,

Aleksey Starobor,

É. A. Mironov,

Oleg Palashov

Publication year - 2016

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.24.015486

Subject(s) - optical isolator , materials science , optics , faraday rotator , faraday effect , laser , wavelength , scandium , faraday cage , isolator , optoelectronics , magnetic field , physics , electrical engineering , quantum mechanics , metallurgy , engineering

A Faraday isolator (FI) for high-power lasers with kilowatt-level average power and 1-µm wavelength was demonstrated using a terbium scandium aluminum garnet (TSAG) with its crystal axis aligned in the <001> direction. Furthermore, no compensation scheme for thermally induced depolarization in a magnetic field was used. An isolation ratio of 35.4 dB (depolarization ratio γ of 2.9 × 10 -4 ) was experimentally observed at a maximum laser power of 1470 W. This result for room-temperature FIs is the best reported, and provides a simple, practical solution for achieving optical isolation in high-power laser systems.

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