Volume 14 Issue 2
Mar.  2021
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Chinese Optics  > 2021  >  14(2): 361-367.
CHEN Bing-yan, YU Yong-ji, WU Chun-ting, JIN Guang-yong. High efficiency mid-infrared 3.8 μm MgO:PPLN optical parametric oscillator pumped by narrow linewidth 1064 nm fiber laser[J]. Chinese Optics, 2021, 14(2): 361-367. doi: 10.37188/CO.2020-0169
Citation: CHEN Bing-yan, YU Yong-ji, WU Chun-ting, JIN Guang-yong. High efficiency mid-infrared 3.8 μm MgO:PPLN optical parametric oscillator pumped by narrow linewidth 1064 nm fiber laser[J]. Chinese Optics, 2021, 14(2): 361-367. doi: 10.37188/CO.2020-0169
shu

High efficiency mid-infrared 3.8 μm MgO:PPLN optical parametric oscillator pumped by narrow linewidth 1064 nm fiber laser

  • Jilin Key Laboratory of Solid Laser Technology and Application, School of Science, Changchun University of Science and Technology, Changchun 130022, China

Funds:  Supported by National Natural Science Foundation of China (No. 11974060); the Science and Technology Department Project of Jilin Province (No. 20190101004JH)
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  • Corresponding author: jgycust@163.com
  • Received Date: 15 Sep 2020
  • Rev Recd Date: 13 Oct 2020
    • Available Online: 22 Feb 2021
  • Publish Date: 23 Mar 2021
    Abstract
  • In this paper, a 1064 nm ytterbium-doped fiber laser with Main Oscillation Power Amplification (MOPA) was used as the pump source to achieve mid-infrared 3.8 μm MgO:PPLN Optical Parametric Oscillation (OPO) laser output. In the pump source, the Distributed Feedback Laser (DFB) was used as the seed source to realize the modulation of the narrow linewidth of the fiber laser. The linewidth of 2.5 nm was compressed to 0.1 nm, and the maximum output power was 40 W. The mid-infrared 3.8 μm MgO:PPLN OPO laser was researched under different pump linewidths. Finally, when the pump power was 18.1 W, the line width was 0.1 nm, the repetition frequency was 1 MHz, and the pulse width was 2 ns, the output laser with the maximum power of 2.06 W and the wavelength of 3822.5 nm was achieved. The corresponding optical-optical conversion efficiency is 11.38%, and the beam quality is M2 = 2.34. This research can efficiency improve the output efficiency of narrow linewidth pumped mid-infrared MgO:PPLN OPO.

     

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