Modeling and optimization of thin disk structure for high power sub-joule laser

0441744 - FZÚ 2015 RIV US eng C - Conference Paper (international conference)
Severová, Patricie - Smrž, Martin - Chyla, Michal - Miura, Taisuke - Endo, Akira - Mocek, Tomáš
Modeling and optimization of thin disk structure for high power sub-joule laser.
High-Power, High-Energy, and High-Intensity Laser Technology; and Research Using Extreme Light: Entering New Frontiers with Petawatt-Class Lasers. Bellingham: SPIE, 2013 - (Hein, J.; Korn, G.; Silva, L.), 87800W. Proceedings of SPIE, 8780. ISBN 978-0-8194-9582-2. ISSN 0277-786X.
[High-Power, High-Energy, and High-Intensity Laser Technology; and Research Using Extreme Light - Entering New Frontiers with Petawatt-Class Lasers. Praha (CZ), 15.04.2013-17.04.2013]
Institutional support: RVO:68378271
Keywords : Yb:YAG * thin-disk * high power lasers * diode pumped lasers
Subject RIV: BH - Optics, Masers, Lasers

We analyzed the transient response characteristics of Yb:YAG thin disk in to clarify the experimentally obtained advantages of pulsed pumping in 1-kHz repetition rate reported in ref. 2. We applied commercial 2D FEA software which can calculate transient response of thermal effects. The temperature distributions of thin disk in both the CW power of 125-W and the average power of pulsed 125-W have been calculated. Even the net heat power were same in both CW and pulsed pumping, the temperature distribution was lower in pulsed pumping which can provide higher O-O efficiency and smaller beam distortion. The time evolution of OPD in the pulsed pumping has been analyzed, too.
Permanent Link: http://hdl.handle.net/11104/0244694