A review of the Young’s modulus and coefficient of thermal expansion of several typical opto-mechanical structural materials at low temperature

Sheng Li; Weigang Wang; Zhimin Liu; Ruicong He; Bin Fan

doi:10.1117/12.2547631

18 December 2019 A review of the Young’s modulus and coefficient of thermal expansion of several typical opto-mechanical structural materials at low temperature

Sheng Li, Weigang Wang, Zhimin Liu, Ruicong He, Bin Fan

Author Affiliations +

Proceedings Volume 11338, AOPC 2019: Optical Sensing and Imaging Technology; 113382K (2019) https://doi.org/10.1117/12.2547631
Event: Applied Optics and Photonics China (AOPC2019), 2019, Beijing, China

Abstract

With the developing of space optical remote sensing from understanding the earth to exploring the universe, the development of optical systems for space optical remote sensors is becoming more and more demanding. In the deep space exploration mission, the target signal is weak relative to the background signal. In order to improve the detection sensitivity of the system, and in order to reduce the influence of background radiation on the observation and to pursue the maximum performance of medium and long wave infrared detection, we need to reduce the temperature of the optical system and detector to a low temperature as much as possible. Therefore, the application of cryogenic optics will become more and more important. We can foresee that cryo-space optics will become an important development trend of optical remote sensing. In the development of cryogenic optical systems, it is a very important task to determine the performance of materials in cryogenic environments. The cryogenic properties of certain materials have been tested and some useful data have been obtained in the world.

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Sheng Li, Weigang Wang, Zhimin Liu, Ruicong He, and Bin Fan "A review of the Young’s modulus and coefficient of thermal expansion of several typical opto-mechanical structural materials at low temperature", Proc. SPIE 11338, AOPC 2019: Optical Sensing and Imaging Technology, 113382K (18 December 2019); https://doi.org/10.1117/12.2547631

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KEYWORDS

Germanium

Silicon

Beryllium

Cryogenics

Mirrors

Aluminum

Optical cryogenics

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