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Thermally induced depolarization in terbium gallium garnet ceramics rod with natural convection cooling
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SYSNO ASEP 0480075 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Thermally induced depolarization in terbium gallium garnet ceramics rod with natural convection cooling Author(s) Slezák, Ondřej (FZU-D) RID, ORCID
Yasuhara, R. (JP)
Lucianetti, Antonio (FZU-D) RID, ORCID
Vojna, David (FZU-D) ORCID
Mocek, Tomáš (FZU-D) RID, ORCID, SAINumber of authors 5 Article number 065610 Source Title Journal of Optics. - : Institute of Physics Publishing - ISSN 2040-8978
Roč. 17, č. 6 (2015), s. 1-8Number of pages 8 s. Language eng - English Country GB - United Kingdom Keywords stress-induced birefringence ; thermal depolarization ; high-power lasers Subject RIV BH - Optics, Masers, Lasers OECD category Optics (including laser optics and quantum optics) R&D Projects ED2.1.00/01.0027 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) EE2.3.20.0143 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) EE2.3.30.0057 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support FZU-D - RVO:68378271 UT WOS 000357162300025 EID SCOPUS 84930958803 DOI https://doi.org/10.1088/2040-8978/17/6/065610 Annotation Thermal birefringence-induced depolarization in terbium gallium garnet (TGG) ceramic rods has been numerically evaluated for the geometry and heating conditions in a previous experiment. In this model, the spatially resolved heat transfer coefficient corresponding to natural convection cooling and the offset of the beam from the rotational axis of the rod have been incorporated and the realistic beam profile used in the experiment has been considered. A resulting beam depolarization ratio of 4.3 x 10(-4) has been calculated for an input power of 117 W. The results were found to be in good agreement with the measured values. Furthermore, a parametric study of the depolarization ratio for higher input powers has been performed leading to a depolarization ratio of 3.3 x 10(-2) for 1 kW input power.
Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2018
Number of the records: 1