Xiaojin Cheng, Jianlei Wang, Zhongguo Yang, Jin Liu, Lei Li, Xiangchun Shi, Wenfa Huang, Jiangfeng Wang, and Weibiao Chen, "A high energy nanosecond cryogenic cooled Yb:YAG active-mirror amplifier system," High Power Laser Sci. Eng. 2, 03000e18 (2014)

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- High Power Laser Science and Engineering
- Vol. 2, Issue 3, 03000e18 (2014)

Fig. 1. Illustration of the pump and cooling structure of the active-mirror amplifier with a cryogenic cooled composite Yb:YAG/YAG crystal.

Fig. 2. Scheme of the active-mirror amplifier setup.

Fig. 3. The output pulse energy of the preamplifier after four-pass amplification independent of the pump energy at a 10 Hz repetition rate at different cooling temperatures.

Fig. 4. The measured and simulated pulse energy of the master amplifier after four-pass amplification independent of the pump energy at a 10 Hz repetition rate and injected pulse energy of 180 mJ.

Fig. 5. Edge-cladding Yb:YAG ceramic to improve the ASE suppression.

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