Infrared and Laser Engineering, Volume. 50, Issue 6, 20210087(2021)

Research on structure design of optical mount with high stability in laser system

Chao Zhang1,2,3, Gengxiu Tang1,2, Zhigang Liu1,2, Liunian Zheng1,2, Youen Jiang1,2, Donghui Zhang1,2,3, and Jianqiang Zhu1,2
Author Affiliations
  • 1Key Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 2National Laboratory on High Power Laser and Physics, Chinese Academy of Engineering Physics, Chinese Academy of Sciences, Shanghai 201800, China
  • 3University of Chinese Academy of Sciences, Beijing 100049, China
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    Figures & Tables(15)
    A common optical mount used in laser system. (a) Oblique view; (b) Exploded view
    Cross-sectional view of a common adjustment screw for precision displacement driving. (a) Common adjustment screw; (b) Schematic diagram of the thread pair
    Effect of the axial shift of the adjustment screw structure on the position of the optical part. (a) Schematic diagram of optical mount disassembly; (b) Position change of optical part
    Effect of the axial initial position and axial shift of the adjustment screw on the angle position of the optic part
    An improved adjustment screw structure. (a) Exploded view of the structure; (b) Thread fit; (c) The cross section of A-A
    Diagram of adjustment screw and nuts. (a) Adjustment screw; (b) Slotted nut; (c) Un-slotted nut
    Test of axial micro-displacement of adjustment screw. (a) Top view; (b) Oblique view
    Tests of axial clearance change of different adjustment screw structures
    Optical mounts with different adjustment screw structure. (a) The un-slotted; (b) The slotted
    Light path diagram for stability comparison[20]
    Thermal shocking tests of two optical mounts. (a) The slotted; (b) The un-slotted
    Angular shift of optical mounts under thermal shocking
    Angular shift of different optical mounts under thermal shocking. (a) The slotted (grease+heat treatment) versus the un-slotted (grease+heat treatment); (b) the slotted (grease +heat treatment) versus the structure (no grease)
    • Table 1. Design parameters of the axial slots of adjustment screw structure

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      Table 1. Design parameters of the axial slots of adjustment screw structure

      ParametersNumbers of slotsD/mm D1/mm H/mm
      Value3-676.650.5
    • Table 2. Angular shift of different optical mounts after baking

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      Table 2. Angular shift of different optical mounts after baking

      Slotted 1-8 testsUn-slotted 1-8 testsNo-grease 1-8 tests
      Angular shift (pitch)/μrad14-153411
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    Chao Zhang, Gengxiu Tang, Zhigang Liu, Liunian Zheng, Youen Jiang, Donghui Zhang, Jianqiang Zhu. Research on structure design of optical mount with high stability in laser system[J]. Infrared and Laser Engineering, 2021, 50(6): 20210087

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    Paper Information

    Category: Optical devices

    Received: Feb. 1, 2021

    Accepted: --

    Published Online: Aug. 19, 2021

    The Author Email:

    DOI:10.3788/IRLA20210087

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