Volume 14 Issue 2
Mar.  2021
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Chinese Optics  > 2021  >  14(2): 329-335.
WANG Lan, JIN Guang Yong, DONG Yuan, WANG Chao. Double pumped composite cavity 501 nm cyan laser with tunable injection power ratio[J]. Chinese Optics, 2021, 14(2): 329-335. doi: 10.37188/CO.2020-0161
Citation: WANG Lan, JIN Guang Yong, DONG Yuan, WANG Chao. Double pumped composite cavity 501 nm cyan laser with tunable injection power ratio[J]. Chinese Optics, 2021, 14(2): 329-335. doi: 10.37188/CO.2020-0161
shu

Double pumped composite cavity 501 nm cyan laser with tunable injection power ratio

  • 1.

    Jilin Key Laboratory of Solid-state Laser Technology and Application, Changchun University of Science and Technology, Changchun 130022, China

  • 2.

    Jilin Province Key Laboratory of Measurement and Testing Instruments and Technology, Jilin Institute of Metrology, Changchun 130103, China

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  • Corresponding author: jgycust@163.com
  • Received Date: 04 Sep 2020
  • Rev Recd Date: 09 Oct 2020
    • Available Online: 09 Mar 2021
  • Publish Date: 23 Mar 2021
    Abstract
  • In order to explore the theoretical and technical basis for the application of high accuracy laser near 500 nm, a double pump source composite cavity combined with nonlinear sum frequency conversion is used to realize zero gain competition of two kinds of fundamental frequency laser in the cavity. This method can improve the output power of fundamental frequency laser, as well as carry out multiple nonlinear frequency conversion in the composite cavity. By adjusting the fundamental frequency laser injection power ratio, the photon number ratio in the cavity reaches 1∶1, which effectively improves the optical-to-optical conversion efficiency and sum-frequency output power. The theoretical model established for the first time is verified experimentally, and Nd:YAG and Nd:YVO4 are used as gain media to obtain 946 nm and 1064 nm fundamental frequency laser output respectively. LBO is sum-frequency crystal. The 946 nm and 1064 nm fundamental frequency laser without gain competition is realized by using the double pump source structure. By adjusting the injection LBO optical power, the sum frequency conversion efficiency and output power are researched when the injection power ratio is different. Finally, the maximum output power of 501 nm cyan laser is 923 mW when the injection power ratio is 1.48∶1 (i.e. the photon number ratio in the cavity is 1∶1).

     

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