• High Power Laser and Particle Beams
  • Vol. 33, Issue 8, 081008 (2021)
Xiwen Qiang, Min Wu, Fei Zong, Shengwei Zhai, Yuehong Hu, Shuanglian Feng, Junwei Zhao, and Jinyong Chang
Author Affiliations
  • The 27th Research Institute of China Electronics Technology Group Corporation, Zhengzhou 450047, China
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    DOI: 10.11884/HPLPB202133.210215 Cite this Article
    Xiwen Qiang, Min Wu, Fei Zong, Shengwei Zhai, Yuehong Hu, Shuanglian Feng, Junwei Zhao, Jinyong Chang. High-precision measurement technique of isoplanatic angle[J]. High Power Laser and Particle Beams, 2021, 33(8): 081008 Copy Citation Text show less
    Diagrammatic layout of tri-annuli apodizing mask (unit: mm)
    Fig. 1. Diagrammatic layout of tri-annuli apodizing mask (unit: mm)
    Calculated value of W(z) compared with its fitting curve
    Fig. 2. Calculated value of W(z) compared with its fitting curve
    Weighting function of three kinds of apodizing masks compared with W(z)=cz5/3
    Fig. 3. Weighting function of three kinds of apodizing masks compared with W(z)=cz5/3
    Comparison of relative error of three kinds of apodizing masks
    Fig. 4. Comparison of relative error of three kinds of apodizing masks
    Isoplanatic angle vary with altitude in different models
    Fig. 5. Isoplanatic angle vary with altitude in different models
    Composition and layout of high-precision measurement technique of isoplanatic angle
    Fig. 6. Composition and layout of high-precision measurement technique of isoplanatic angle
    Measured data through the day in typical conditions
    Fig. 7. Measured data through the day in typical conditions
    type of apodizing maskradius /mm
    center block35.560
    telescope101.60
    inside/outside radius of inner transmittance ring37.3888/43.8404
    inside/outside radius of middle transmittance ring62.8904/69.2404
    inside/outside radius of outer transmittance ring81.9404/101.6000
    Table 1. Size of tri-annuli apodizing mask
    design procedures of apodizing mask fit coefficient c of weighting function transmittance area Aof the ring /m2inside/outside radius of middle transmittance ring/mm
    single aperture1.209×10−160.0095radius55.00
    dual ring1.551×10−160.0205 inside/outside radius of inner transmittance ring37.50/50.00
    inside/outside radius of outer transmittance ring70.00/101.6
    Table 2. The size of apodizing mask
    key specificationsdesign value
    dynamic range3~30 μrad(λ=500 nm)
    wave length600~1000 nm
    sample frequency≥300 Hz
    single sample size≥600
    sampling precision12 bit
    variation range of zenith angle5°~45°
    variation range of azimuth0°~360°
    Table 3. Key specifications of the high-precision isoplanometer
    Xiwen Qiang, Min Wu, Fei Zong, Shengwei Zhai, Yuehong Hu, Shuanglian Feng, Junwei Zhao, Jinyong Chang. High-precision measurement technique of isoplanatic angle[J]. High Power Laser and Particle Beams, 2021, 33(8): 081008
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