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Article

Faraday Rotation of Dy2O3, CeF3 and Y3Fe5O12 at the Mid-Infrared Wavelengths

1
HiLASE Centre, FZU–Institute of Physics of the Czech Academy of Sciences, Za Radnicí 828, 252 41 Dolní Břežany, Czech Republic
2
Department of Physical Electronics, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, 115 19 Prague, Czech Republic
3
National Institute for Fusion Science, National Institutes of Natural Sciences, 322-6, Oroshi-cho, Toki, Gifu 509-5292, Japan
4
Kitami Institute of Technology, 165 Koen-cho, Kitami, Hokkaido 090-8507, Japan
*
Author to whom correspondence should be addressed.
Materials 2020, 13(23), 5324; https://doi.org/10.3390/ma13235324
Received: 5 October 2020 / Revised: 20 November 2020 / Accepted: 23 November 2020 / Published: 24 November 2020
(This article belongs to the Special Issue Novel Laser Ceramic Materials and Applications)
The relatively narrow choice of magneto-active materials that could be used to construct Faraday devices (such as rotators or isolators) for the mid-infrared wavelengths arguably represents a pressing issue that is currently limiting the development of the mid-infrared lasers. Furthermore, the knowledge of the magneto-optical properties of the yet-reported mid-infrared magneto-active materials is usually restricted to a single wavelength only. To address this issue, we have dedicated this work to a comprehensive investigation of the magneto-optical properties of both the emerging (Dy2O3 ceramics and CeF3 crystal) and established (Y3Fe5O12 crystal) mid-infrared magneto-active materials. A broadband radiation source was used in a combination with an advanced polarization-stepping method, enabling an in-depth analysis of the wavelength dependence of the investigated materials’ Faraday rotation. We were able to derive approximate models for the examined dependence, which, as we believe, may be conveniently used for designing the needed mid-infrared Faraday devices for lasers with the emission wavelengths in the 2-μm spectral region. In the case of Y3Fe5O12 crystal, the derived model may be used as a rough approximation of the material’s saturated Faraday rotation even beyond the 2-μm wavelengths. View Full-Text
Keywords: Faraday effect; magneto-optical properties; Verdet constant; Faraday rotation; magneto-active materials; yttrium iron garnet; dysprosium sesquioxide; cerium fluoride; Faraday devices; mid-infrared lasers Faraday effect; magneto-optical properties; Verdet constant; Faraday rotation; magneto-active materials; yttrium iron garnet; dysprosium sesquioxide; cerium fluoride; Faraday devices; mid-infrared lasers
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MDPI and ACS Style

Vojna, D.; Slezák, O.; Yasuhara, R.; Furuse, H.; Lucianetti, A.; Mocek, T. Faraday Rotation of Dy2O3, CeF3 and Y3Fe5O12 at the Mid-Infrared Wavelengths. Materials 2020, 13, 5324. https://doi.org/10.3390/ma13235324

AMA Style

Vojna D, Slezák O, Yasuhara R, Furuse H, Lucianetti A, Mocek T. Faraday Rotation of Dy2O3, CeF3 and Y3Fe5O12 at the Mid-Infrared Wavelengths. Materials. 2020; 13(23):5324. https://doi.org/10.3390/ma13235324

Chicago/Turabian Style

Vojna, David, Ondřej Slezák, Ryo Yasuhara, Hiroaki Furuse, Antonio Lucianetti, and Tomáš Mocek. 2020. "Faraday Rotation of Dy2O3, CeF3 and Y3Fe5O12 at the Mid-Infrared Wavelengths" Materials 13, no. 23: 5324. https://doi.org/10.3390/ma13235324

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