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24 July 2018 Sapphire face cooling for high-repetition-rate terawatt-class Ti:sapphire amplifier
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Proceedings Volume 10827, Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018); 108273R (2018) https://doi.org/10.1117/12.2326819
Event: Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018), 2018, Shanghai, China
Abstract
In this work, we evaluated the feasibility of sapphire conductive cooling for short-pulse Ti:Sapphire (Ti:sa) laser amplifiers which suffers from thermal issues under high-repetition-rate and high-energy operation. Numerical heat transfer simulations of 100-TW class sapphire face-cooled Ti:sa gain modules operated around 300 W average powers are presented. The distributions of temperature, stress, strain, and birefringence in liquid cooled sapphire/Ti:sa/sapphire assembly are calculated by a finite element analysis. Based on these data, the thermal induced wave front distortions and depolarization are investigated for different repetition rates. We determine that sapphire face cooling concept holds a promise of achieving higher energies and repetition-rates in Ti:Sa amplifiers.
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Tingrui Huang, Wenfa Huang, Jiangfeng Wang, Xinghua Lu, Wei Fan, and Xuechun Li "Sapphire face cooling for high-repetition-rate terawatt-class Ti:sapphire amplifier", Proc. SPIE 10827, Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018), 108273R (24 July 2018); https://doi.org/10.1117/12.2326819
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