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High-power, Joule-class, temporally shaped multi-pass ring laser amplifier with two Nd:glass laser heads

  • Jiangtao Guo (a1) (a2) (a3), Jiangfeng Wang (a1) (a2), Hui Wei (a1) (a2), Wenfa Huang (a1) (a2), Tingrui Huang (a1) (a2) (a3), Gang Xia (a1) (a2) (a3), Wei Fan (a1) (a2) and Zunqi Lin (a1) (a2)...

Abstract

A high-power, Joule-class, nanosecond temporally shaped multi-pass ring laser amplifier system with two neodymium-doped phosphate glass (Nd:glass) laser heads is demonstrated. The laser amplifier system consists of three parts: an all-fiber structure seeder, a diode-pumped Nd:glass regenerative amplifier and a multi-pass ring amplifier, where the thermally induced depolarization of two laser heads is studied experimentally and theoretically. Following the injection of a square pulse with the pulse energy of 0.9 mJ and pulse width of 6 ns, a 0.969-J high-energy laser pulse at 1 Hz was generated, which had the ability to change the waveform arbitrarily, based on the all-fiber structure front end. The experimental results show that the proposed laser system is promising to be adopted in the preamplifier of high-power laser facilities.

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Copyright

This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.

Corresponding author

Correspondence to:  J. Wang, No. 390 Qinghe Road, Jiading District, Shanghai 201800, China. Email: wajfeng@163.com

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