High Power Laser Science and Engineering, 2020, 8 (2): 02000e13, Published Online: Apr. 21, 2020  

Thermal lens analysis in a diode-pumped 10 Hz 100 mJ Yb:YAG amplifier Download: 635次

Author Affiliations
1 GoLP/Instituto de Plasmas e Fus?o Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais,1049-001Lisbon, Portugal
2 GoLP/Instituto de Plasmas e Fus?o Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais,1049-001Lisbon, Portugal
Abstract
We address the power scaling issue in end-pumped laser rod amplifiers by studying, experimentally and numerically, the magnitude of thermal lensing in a high-energy diode-pumped Yb:YAG crystal. The spatio-temporal temperature profile of the gain medium and the focal length of the induced thermal lens are determined numerically. The influence of the repetition rate and pumping power on the temperature distribution is analyzed. Experimental measurements covered repetition rates between 1 and 10 Hz and up to 4 kW pumping power.

Victor Hariton, Celso Paiva Jo?o, Hugo Pires, Mario Galletti, Gon?alo Figueira. Thermal lens analysis in a diode-pumped 10 Hz 100 mJ Yb:YAG amplifier[J]. High Power Laser Science and Engineering, 2020, 8(2): 02000e13.

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