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

Huasong Liu; Muxiao Liu; Zhanshan Wang; Yiqin Ji; Jiangtao Lu

doi:10.1117/12.888406

18 February 2011 Research on the reflection coating at three wavelengths for primary reflector of the optical antenna in the laser communication systems

Huasong Liu, Muxiao Liu, Zhanshan Wang, Yiqin Ji, Jiangtao Lu

Author Affiliations +

Proceedings Volume 7995, Seventh International Conference on Thin Film Physics and Applications; 79950N (2011) https://doi.org/10.1117/12.888406
Event: Seventh International Conference on Thin Film Physics and Applications, 2010, Shanghai, China

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.

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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 (18 February 2011); https://doi.org/10.1117/12.888406

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KEYWORDS

Coating

Reflectivity

Reflection

Telecommunications

Laser communications

Reflectors

Laser systems engineering

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