• Infrared and Laser Engineering
  • Vol. 53, Issue 8, 20240187 (2024)
Xiang LI1,2, Dongyu WU3,*, Ziting SUN3, Liang GAO1,2..., Yan AN1,2, Yansong SONG1,2 and Keyan DONG1,2|Show fewer author(s)
Author Affiliations
  • 1College of Opto-electronic Engineering, Changchun University of Science and Technology, Changchun 130022, China
  • 2National and Local Joint Engineering Research Center of Space and Optoelectronics Technology, Changchun University of Science and Technology, Changchun 130022, China
  • 3College of Mechanical and Electrical Engineering, Changchun University of Science and Technology, Changchun 130022, China
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    DOI: 10.3788/IRLA20240187 Cite this Article
    Xiang LI, Dongyu WU, Ziting SUN, Liang GAO, Yan AN, Yansong SONG, Keyan DONG. Study of optical antenna image quality under high-power laser irradiation[J]. Infrared and Laser Engineering, 2024, 53(8): 20240187 Copy Citation Text show less
    Structure diagram of an off-axis two-mirror optical antenna
    Fig. 1. Structure diagram of an off-axis two-mirror optical antenna
    Mesh model of an off-axis two-mirror optical antenna
    Fig. 2. Mesh model of an off-axis two-mirror optical antenna
    Coordinate system setup for analytical modeling of off-axis two-mirror optical antenna
    Fig. 3. Coordinate system setup for analytical modeling of off-axis two-mirror optical antenna
    Temperature field distribution of primary and secondary mirrors
    Fig. 4. Temperature field distribution of primary and secondary mirrors
    Primary and secondary mirrors and displacement clouds of the system
    Fig. 5. Primary and secondary mirrors and displacement clouds of the system
    The displacement value of the primary and secondary mirror. (a) The displacement value of the primary mirror; (b) The displacement value of the secondary mirror
    Fig. 6. The displacement value of the primary and secondary mirror. (a) The displacement value of the primary mirror; (b) The displacement value of the secondary mirror
    Comparison plot of the Zernike polynomial coefficient values before and after removing the displacement of the primary and secondary mirrors
    Fig. 7. Comparison plot of the Zernike polynomial coefficient values before and after removing the displacement of the primary and secondary mirrors
    The curves of Zernike coefficient values and wavefront. (a) Zernike factor of the primary mirror;(b) Zernike factor of the secondary mirror; (c) Zernike factor of the antenna;(d) The wavefront RMS and PV of antenna
    Fig. 8. The curves of Zernike coefficient values and wavefront. (a) Zernike factor of the primary mirror;(b) Zernike factor of the secondary mirror; (c) Zernike factor of the antenna;(d) The wavefront RMS and PV of antenna
    Wavefront aberration diagram of an off-axis dual-reflector optical antenna under the action of a 10 W laser for 30 minutes
    Fig. 9. Wavefront aberration diagram of an off-axis dual-reflector optical antenna under the action of a 10 W laser for 30 minutes
    Field diagram of equivalence experiment. (a) Measurement of antenna wavefront aberration at room temperature of 19 ℃; (b) Measurement of antenna wavefront aberration after loading a 10 W laser
    Fig. 10. Field diagram of equivalence experiment. (a) Measurement of antenna wavefront aberration at room temperature of 19 ℃; (b) Measurement of antenna wavefront aberration after loading a 10 W laser
    Comparison of simulation and experimental results
    Fig. 11. Comparison of simulation and experimental results
    Comparison of wavefront aberrations in the antenna before and after loading with a 10 W laser. (a) Wavefront aberration of the antenna measured before laser loading; (b) Wavefront aberration of the measured antenna after loading a 10 W laser for 30 minutes
    Fig. 12. Comparison of wavefront aberrations in the antenna before and after loading with a 10 W laser. (a) Wavefront aberration of the antenna measured before laser loading; (b) Wavefront aberration of the measured antenna after loading a 10 W laser for 30 minutes
    ParametersTitanium alloyAluminum alloyH-K9LZerodurFused silica
    Density/g·mm34.402.772.523.212.19
    Young's modulus/GPa114.0068.1079.2091.0073.00
    Linear expansion coefficient/8.80×10−623.60×10−67.60×10−60.05×10−60.50×10−6
    Thermal conductivity/W·m−1·℃−17.30121.001.501.641.40
    Poisson's ratio0.310.330.210.240.17
    Specific heat capacity/J·kg−1·℃−1522.30960.00649.00821.00750.00
    Extinction coefficient(λ=1055 nm)--1.34E-083.36E-096.72E-09
    Table 1. Physical parameters of some materials
    Time/s050100150200250300
    Primary mirror/mm−8.40E-5−1.26E-4−3.92E-4−6.2E-4−8.4E-4−1.78E-3−3.06E-3
    Secondary mirror/mm−8.40E-5−6.33E-4−9.52E-4−1.43E-3−3.91E-3−6.78E-3−8.20E-3
    Antenna/mm1.68E-47.59E-41.34E-32.02E-34.75E-38.56E-31.13E-2
    Table 2. The Z-axis (optical axis) displacement value of the lens surface under a transient thermal load of 1 000 W
    Zernike coefficient aiPolynomial ziPhysical meaning
    a11Translate
    a2$\rho \cos \theta $Tilt x
    a3$\rho \sin \theta $Tilt y
    a4$2{\rho ^2} - 1$Defoucus
    a5${\rho ^2}\cos 2\theta $0° or 90° astigmatism
    a6${\rho ^2}\sin 2\theta $±45° astigmatism
    a7$\left( {3{\rho ^2} - 2} \right)\rho \cos \theta $Coma x
    a8$\left( {3{\rho ^2} - 2} \right)\rho \sin \theta $Coma y
    a9$6{\rho ^4} - 6{\rho ^2} + 1$Primary spherical
    Table 3. Correlations between Fringe Zernike polynomials and Sediel aberrations
    Time/minMeasurementRMS (λ=632.8 nm)SimulationRMS (λ=632.8 nm)Error
    30.051λ0.047λ5.88%
    60.051λ0.047λ7.84%
    90.052λ0.049λ5.76%
    120.053λ0.051λ3.77%
    150.054λ0.053λ1.85%
    180.056λ0.054λ3.57%
    210.057λ0.055λ3.50%
    240.058λ0.056λ3.44%
    270.060λ0.057λ5.00%
    300.063λ0.058λ7.93%
    Table 4. The changes in wavefront aberrations of the experimental antenna over time
    Xiang LI, Dongyu WU, Ziting SUN, Liang GAO, Yan AN, Yansong SONG, Keyan DONG. Study of optical antenna image quality under high-power laser irradiation[J]. Infrared and Laser Engineering, 2024, 53(8): 20240187
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