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Thermally induced depolarization in terbium gallium garnet ceramics rod with natural convection cooling

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, SAI}
Number of authors	5
Article number	065610
Source Title	Journal of Optics. - : Institute of Physics Publishing - ISSN 2040-8978 Roč. 17, č. 6 (2015), s. 1-8
Number 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	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