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Proceedings Article

Research on the reflection coating at three wavelengths for primary reflector of the optical antenna in the laser communication systems

[+] Author Affiliations
Huasong Liu

Tongji Univ. (China) and Jinhang Institute of Technical Physics (China)

Muxiao Liu

Jinhang Institute of Technical Physics (China)

Zhanshan Wang, Jiangtao Lu

Tongji Univ. (China)

Yiqin Ji

Jinhang Institute of Technical Physics (China) and Harbin Institute of Technology (China)

Proc. SPIE 7995, Seventh International Conference on Thin Film Physics and Applications, 79950N (February 17, 2011); doi:10.1117/12.888406
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From Conference Volume 7995

  • Seventh International Conference on Thin Film Physics and Applications
  • Junhao Chu; Zhanshan Wang
  • Shanghai, China | September 24, 2010

abstract

Primary reflector of the optical antenna is a key component in the space laser communication systems, and multi-wavelengths laser need to be worked in the common aperture. Reflection coating is designed for the primary reflector of a laser communication system, which can work at three wavelengths (633nm, 808nm, 1550nm), the designed target reflectance are R 633nm≥50%, R 808nm≥99% and R 1550nm≥99% at angle of incidence from 0 to 20 deg. We selected Ta2O5 and SiO2 as the high refractive index and low refractive index coating materials, analyzed the impact on the reflection coating of the systemic errors and random errors, and determined the manufacture error of the coater system which can't greater than 1%. The Ion beam sputtering deposition technique was used to manufacture reflection coating for three-wavelengths and a LAMBDA900 spectrophotometer was used to analysis the reflectance at three wavelengths which achieved the design requirements. Finally we give the origin of manufacture error source for this high reflection coating. The reflection coating component was successfully used in the primary reflector of the optical antenna of the laser communication systems.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Huasong Liu ; Muxiao Liu ; Zhanshan Wang ; Yiqin Ji and Jiangtao Lu
"Research on the reflection coating at three wavelengths for primary reflector of the optical antenna in the laser communication systems", Proc. SPIE 7995, Seventh International Conference on Thin Film Physics and Applications, 79950N (February 17, 2011); doi:10.1117/12.888406; http://dx.doi.org/10.1117/12.888406


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