Numerical analysis of beam distortion induced by thermal effects in chirped volume Bragg grating compressors for high-power lasers

Cho, S.; Novák, Ondřej; Smrž, Martin; Lucianetti, Antonio; Yu, T.J.; Mocek, Tomáš

doi:https://dx.doi.org/10.1364/JOSAB.409434

Number of the records: 1

Numerical analysis of beam distortion induced by thermal effects in chirped volume Bragg grating compressors for high-power lasers

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SYSNO ASEP	0538092
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Numerical analysis of beam distortion induced by thermal effects in chirped volume Bragg grating compressors for high-power lasers
Author(s)	Cho, S. (KR) Novák, Ondřej (FZU-D)_{RID, ORCID} Smrž, Martin (FZU-D)_{RID, ORCID} Lucianetti, Antonio (FZU-D)_{RID, ORCID} Yu, T.J. (KR) Mocek, Tomáš (FZU-D)_{RID, ORCID, SAI}
Number of authors	6
Source Title	Journal of the Optical Society of America. B. - : Optical Society of America - ISSN 0740-3224 Roč. 37, č. 12 (2020), s. 3874-3881
Number of pages	8 s.
Language	eng - English
Country	US - United States
Keywords	thermal effects ; CVBG ; high-power lasers ; thermal distortion ; Yb:YAG laser
Subject RIV	BH - Optics, Masers, Lasers
OECD category	Optics (including laser optics and quantum optics)
R&D Projects	EF15_006/0000674 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	LO1602 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Method of publishing	Open access
Institutional support	FZU-D - RVO:68378271
UT WOS	000595619400040
EID SCOPUS	85097732807
DOI	10.1364/JOSAB.409434
Annotation	We conducted a study on the thermal effects in chirped volumeBragg gratings (CVBGs) used as optical compressors in high-power lasers. A simulation code was developed to predict the distortion of the pulses by the thermal effects. The types and significance of the thermal distortion were analyzed using an Yb:YAGlaser with an average power of 250W. The temperature distribution in the CVBG, the thermal lens effect, the beam propagation path changes due to the thermal lens, and the compression efficiency decrease due to the phase delaywere analyzed.As a result,we predict that the peak power decreases to 63.9% due to the thermal effects under the operating conditions of 250W.We also suggest new designs for the CVBG mount that minimize the peak power loss.We expect the peak power loss to be reduced only by 1.1% when using our new mount design for the CVBG.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2021
Electronic address	http://hdl.handle.net/11104/0315906

Number of the records: 1