Volume 17 Issue 3
May  2024
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PAN Li, HE Yang, MA Li-guo, JI Yan-hui, LIU Jin-dai, CHEN Fei. Influence of flow channel structure on characteristics of laser diode pumped flowing-gas rubidium vapor laser[J]. Chinese Optics, 2024, 17(3): 617-629. doi: 10.37188/CO.2023-0174
Citation: PAN Li, HE Yang, MA Li-guo, JI Yan-hui, LIU Jin-dai, CHEN Fei. Influence of flow channel structure on characteristics of laser diode pumped flowing-gas rubidium vapor laser[J]. Chinese Optics, 2024, 17(3): 617-629. doi: 10.37188/CO.2023-0174

Influence of flow channel structure on characteristics of laser diode pumped flowing-gas rubidium vapor laser

doi: 10.37188/CO.2023-0174
Funds:  National Natural Science Foundation of China (No. 62005274, No. 61975203); Fund Project of the State Key Laboratory of Laser and Material Interaction (No. SKLLIM2012); Youth Innovation Promotion Association of CAS (No. 2022216)
More Information
  • Corresponding author: feichenny@126.com
  • Received Date: 08 Oct 2023
  • Rev Recd Date: 30 Oct 2023
  • Accepted Date: 05 Dec 2023
  • Available Online: 14 Dec 2023
  • In order to study the influence of the gas flow channel structure on the output performance of the flowing-gas diode pumped alkali vapor laser (FDPAL), we established the FDPAL theoretical model based on the gas heat transfer, fluid mechanics, and laser dynamics process in FDPAL using side pumping Rb vapor FDPAL (Rb-FDPAL) as the simulation object. The impacts of the gas flow direction, the cross-sectional area and the shape of the runner on the Rb-FDPAL’s output performance were analyzed. The results show that with the horizontal flow method and by increasing the cross-sectional area of the flow channel and setting a masonry structure as the connection between the gas flow channel and the steam pool, we effectively suppress the vortex in the vapor, increase the gas flow rate, and decrease the thermal effect of the steam pool. Rb-FDPAL's laser output power and slope efficiency are higher, and the simulation results are consistent with the experiment.

     

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