• Chinese Journal of Lasers
  • Vol. 46, Issue 7, 0705002 (2019)
Wang Zhao1、2、3, Lizhi Dong1、2, Ping Yang1、2, Bing Xu1、2, and Shuai Wang1、2、*
Author Affiliations
  • 1 Key Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu, Sichuan 610209, China
  • 2 Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, Sichuan 610209, China
  • 3 University of Chinese Academy of Sciences, Beijing 100049, China
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    DOI: 10.3788/CJL201946.0705002 Cite this Article Set citation alerts
    Wang Zhao, Lizhi Dong, Ping Yang, Bing Xu, Shuai Wang. Influence of Surface Roughness on Wavefront Sensing Performance of Active Illumination Beacon[J]. Chinese Journal of Lasers, 2019, 46(7): 0705002 Copy Citation Text show less
    Compensation system for laser transmission in atmospheric turbulence with active illumination beacon
    Fig. 1. Compensation system for laser transmission in atmospheric turbulence with active illumination beacon
    Propagation model of illumination beam
    Fig. 2. Propagation model of illumination beam
    Relationship between actuator of deformable mirror and sub-aperture of wavefront sensor
    Fig. 3. Relationship between actuator of deformable mirror and sub-aperture of wavefront sensor
    Diagram of illuminating beam layout when illuminating beam is flat-topped beam. (a) Four illuminators; (b) nine illuminators
    Fig. 4. Diagram of illuminating beam layout when illuminating beam is flat-topped beam. (a) Four illuminators; (b) nine illuminators
    Influence of laser beam diameter on wavefront sensing performance of active illumination beacon. (a) Four illuminators; (b) nine illuminators
    Fig. 5. Influence of laser beam diameter on wavefront sensing performance of active illumination beacon. (a) Four illuminators; (b) nine illuminators
    Height distributions of different roughnesses of target surface. (a) Extreme roughness; (b) strong roughness; (c) medium roughness; (d) weak roughness
    Fig. 6. Height distributions of different roughnesses of target surface. (a) Extreme roughness; (b) strong roughness; (c) medium roughness; (d) weak roughness
    Scattered wave collimated by telescope with nine illuminators. (a) Normalized standard deviation of light intensity; (b) wavefront RMS
    Fig. 7. Scattered wave collimated by telescope with nine illuminators. (a) Normalized standard deviation of light intensity; (b) wavefront RMS
    Atmospheric turbulence aberrations detected by active illumination beacon with nine illuminators
    Fig. 8. Atmospheric turbulence aberrations detected by active illumination beacon with nine illuminators
    Influence of surface roughness on correction effect of AO system. (a) Four illuminators; (b) nine illuminators
    Fig. 9. Influence of surface roughness on correction effect of AO system. (a) Four illuminators; (b) nine illuminators
    Difference of Strehl ratios obtained by AO systems with four illuminators and nine illuminators
    Fig. 10. Difference of Strehl ratios obtained by AO systems with four illuminators and nine illuminators
    Statistical parameterσh>λ, lc<λ0.3λ<σh<0.1λ, lcλ0.1λ<σh<0.3λ, lcλσh<0.1λ, lcλ
    RoughnessExtremeStrongMediumWeak
    Table 1. Division of surface roughness
    Elevation angle /(°)RMS /μm
    Point sourceStrong roughnessMedium roughnessWeak roughness
    50.09980.17740.22850.3314
    150.05720.07580.12130.2022
    300.04340.05980.09940.1557
    Table 2. RMS of beacon detection error
    Wang Zhao, Lizhi Dong, Ping Yang, Bing Xu, Shuai Wang. Influence of Surface Roughness on Wavefront Sensing Performance of Active Illumination Beacon[J]. Chinese Journal of Lasers, 2019, 46(7): 0705002
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