Main > High Power Laser Science and Engineering >  Volume 8 >  Issue 2 >  Page 02000e12 > Article
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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)

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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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## 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.