• Optical Instruments
  • Vol. 46, Issue 3, 87 (2024)
Bo ZHANG, Yuefei LI, Weilin CAO, Xiaojie HUANG..., Dawei ZHANG and Jianlang LI*|Show fewer author(s)
Author Affiliations
  • School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
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    DOI: 10.3969/j.issn.1005-5630.202303210071 Cite this Article
    Bo ZHANG, Yuefei LI, Weilin CAO, Xiaojie HUANG, Dawei ZHANG, Jianlang LI. Research on Nd∶YAG solid-state laser with extracavity rotatory pumping[J]. Optical Instruments, 2024, 46(3): 87 Copy Citation Text show less

    Abstract

    Thermal management in solid-state lasers is still a challenge in the development of high-energy laser systems. Introducing relative motion between the pump beam and the gain medium in the laser system is an efficient thermal management scheme. The temperature distribution of Nd∶YAG crystal was analyzed by means of finite element numerical simulation for static pumping, rotating gain medium pumping and pump-beam rotating pumping. Rotated at 800 r/min with standard heat-sinking cooling the disk temperature increased by only 16 ℃ reaching a maximum temperature of ~36 ℃, which is much lower than ~142 ℃ at static pumping. Experimentally, we designed and demonstrated a Nd∶YAG laser with the extracavity rotatory pumping, and obtained a 12.2 W output of 1064 nm with a slope efficiency of 37.2%, which is greater than the 35.1% at static pumping. The experimental results were coinciding with the theoretical simulation. The study shows that the solid state laser with extracavity rotatory pumping displays greatly enhanced thermal control.
    Bo ZHANG, Yuefei LI, Weilin CAO, Xiaojie HUANG, Dawei ZHANG, Jianlang LI. Research on Nd∶YAG solid-state laser with extracavity rotatory pumping[J]. Optical Instruments, 2024, 46(3): 87
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