Experimental Study of a Diode-Pumped Nd:YAG Slab Laser Amplifier


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Abstract

We demonstrate a laser-diode-pumped Nd:YAG slab amplifier with dimensions of 7×35×138.2 mm. The fluorescence is homogeneously distributed in the Nd:YAG amplifier, and a stored energy of 3.2 J can be achieved at 1,500 W pump power. For a repetition frequency of 200 Hz, 25 μJ injection polarized seed light, and 1,500 W pump power, the small signal gain reaches 12.66. At the same repetition frequency, 0.4 mJ with 27 ns bandwidth of injected seed-light energy and a 6×26 mm aperture, the output energy reaches 1.071 J. The extraction efficiency is 33.46% after four-pass amplification. An energy amplification from millijoules to joules is realized for the injected laser beam.

About the authors

Guangyan Guo

Academy of Optoelectronics, Chinese Academy of Sciences; University of the Chinese Academy of Sciences

Email: fanzhongwei@aoe.ac.cn
China, Beijing, 100094; Beijing, 100049

Ye Lang

Academy of Optoelectronics, Chinese Academy of Sciences; School of Optoelectronics, Beijing Institute of Technology

Email: fanzhongwei@aoe.ac.cn
China, Beijing, 100094; Beijing, 100081

Weiran Lin

Academy of Optoelectronics, Chinese Academy of Sciences

Email: fanzhongwei@aoe.ac.cn
China, Beijing, 100094

Zhijun Kang

Academy of Optoelectronics, Chinese Academy of Sciences

Email: fanzhongwei@aoe.ac.cn
China, Beijing, 100094

Hongbo Zhang

Academy of Optoelectronics, Chinese Academy of Sciences; HarGlo Applied Laser Technology Institute Company, Ltd.

Email: fanzhongwei@aoe.ac.cn
China, Beijing, 100094; Tianjin, 300304

Zhongwei Fan

Academy of Optoelectronics, Chinese Academy of Sciences; University of the Chinese Academy of Sciences

Author for correspondence.
Email: fanzhongwei@aoe.ac.cn
China, Beijing, 100094; Beijing, 100049

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