Journal
OPTICS LETTERS
Volume 45, Issue 7, Pages 1683-1686Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.387911
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Funding
- European Regional Development Fund [CZ.02.1.01/0.0/0.0/15_006/0000674]
- Japan Society for the Promotion of Science [18H01204]
- Horizon 2020 Framework Programme [739573]
- National Institute for Fusion Science [KEIN1608]
- Ministerstvo Skolstvi, Mladeze a Telovychovy [LO1602, LM2015086]
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Potassium terbium fluoride KTb3F10 (KTF) crystal is a promising magneto-active material for creating multikilowatt average-power Faraday isolators operating at the visible and near-infrared wavelengths. Nevertheless, the key material's parameter needed for the design of any Faraday isolator-the Verdet constant, has not been comprehensively investigated yet. In this Letter, we report on measurement of the Verdet constant of the KTF crystal for wavelengths between 600 and 1500 nm and for temperatures ranging from 15 to 295 K. A suitable model for the Verdet constant as a function of wavelength and temperature has been developed and may be conveniently used for optimal design of KTF-based high-average-power Faraday isolators. (C) 2020 Optical Society of America
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