Numerical analysis of thermal effects in a concept of a cryogenically cooled Yb: YAG multislab 10 J/100-Hz laser amplifier

0511129 - FZÚ 2020 RIV US eng J - Článek v odborném periodiku
Sawicka-Chyla, Magdalena - Divoký, Martin - Slezák, Ondřej - De Vido, M. - Lucianetti, Antonio - Mocek, Tomáš
Numerical analysis of thermal effects in a concept of a cryogenically cooled Yb: YAG multislab 10 J/100-Hz laser amplifier.
IEEE Journal of Quantum Electronics. Roč. 55, č. 5 (2019), s. 1-8, č. článku 5100108. ISSN 0018-9197. E-ISSN 1558-1713
Grant CEP: GA MŠMT EF15_006/0000674; GA MŠMT LO1602; GA MŠMT LM2015086
GRANT EU: European Commission(XE) 739573 - HiLASE CoE
Grant ostatní: OP VVV - HiLASE-CoE(XE) CZ.02.1.01/0.0/0.0/15_006/0000674
Institucionální podpora: RVO:68378271
Klíčová slova: high power lasers * thermooptical effects * multislab laser architecture
Obor OECD: Optics (including laser optics and quantum optics)
Impakt faktor: 2.384, rok: 2019
Způsob publikování: Omezený přístup
https://doi.org/10.1109/jqe.2019.2929962

A thermo-optical design study of different slab geometries for a concept of a cryogenically cooled multislab amplifier operating at 10 J/ 100 Hz is presented. A finite element method (FEM) is used for 3-D analysis of heat distribution, temperature, stress and strain. From this data, birefringence, depolarization losses and wavefront distortion are calculated for a single pass through the amplifier consisting of four slabs. A comparison of different slab shapes shows that a square-shape geometry produces the smallest thermal gradients at the outer sides of the beam region, which results in smaller depolarization losses. Although the design with square-shape slabs is more sensitive to misalignment, our study shows better results compared to the case of circular-shape slabs.

Trvalý link: http://hdl.handle.net/11104/0301459