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  • Received: Nov. 25, 2019

    Accepted: Mar. 2, 2020

    Posted: Apr. 21, 2020

    Published Online: Apr. 21, 2020

    The Author Email: Yingjie Shen (yingjieyj@163.com)

    DOI: 10.1017/hpl.2020.10

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    Yingjie Shen, Chuanpeng Qian, Xiaoming Duan, Ruijun Lan. High-power long-wave infrared laser based on polarization beam coupling technique[J]. High Power Laser Science and Engineering, 2020, 8(2): 02000e12

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High Power Laser Science and Engineering, Vol. 8, Issue 2, 02000e12 (2020)

High-power long-wave infrared laser based on polarization beam coupling technique

Yingjie Shen1,†, Chuanpeng Qian2, Xiaoming Duan3, and Ruijun Lan1

Author Affiliations

  • 1School of Opto-electronic Information Science and Technology, Yantai University, Yantai264005, China
  • 2Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai201800, China
  • 3National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin150001, China

Abstract

We demonstrated a high-power long-wave infrared laser based on a polarization beam coupling technique. An average output power at $8.3~\unicode[STIX]{x03BC}\text{m}$ of 7.0 W was achieved at a maximum available pump power of 107.6 W, corresponding to an optical-to-optical conversion of 6.5%. The coupling efficiency of the polarization coupling system was calculated to be approximately 97.2%. With idler single resonance operation, a good beam quality factor of ${\sim}1.8$ combined with an output wavelength of $8.3~\unicode[STIX]{x03BC}\text{m}$ was obtained at the maximum output power.

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