17 May 2013 Modeling and optimization of thin disk structure for high power sub-joule laser
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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.
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Patricie Severová, Patricie Severová, Martin Smrz, Martin Smrz, Michal Chyla, Michal Chyla, Taisuke Miura, Taisuke Miura, Akira Endo, Akira Endo, Tomáš Mocek, Tomáš Mocek, "Modeling and optimization of thin disk structure for high power sub-joule laser", Proc. SPIE 8780, High-Power, High-Energy, and High-Intensity Laser Technology; and Research Using Extreme Light: Entering New Frontiers with Petawatt-Class Lasers, 87800W (17 May 2013); doi: 10.1117/12.2017388; https://doi.org/10.1117/12.2017388

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