17 May 2016 The development of a cryogenic integrated system with the working temperature of 100K
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Abstract
In the infrared system, cooling down the optic components' temperature is a better choice to decrease the background radiation and maximize the sensitivity. This paper presented a 100K cryogenic optical system, for which an integrated designation of mechanical cooler, flexible thermal link and optical bench was developed. The whole infrared optic components which were assembled in a vacuum box were cooled down to 100K by two mechanical coolers. Low thermal conductivity supports and low emissivity multi-layers were used to reduce the cryogenic optical system's heat loss. The experiment results showed that in about eight hours, the temperature of the optical components reached 100K from room temperature, and the vibration from the mechanical coolers nearly have no affection to the imaging process by using of thermal links. Some experimental results of this cryogenic system will be discussed in this paper.
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En'guang Liu, En'guang Liu, Yi'nong Wu, Yi'nong Wu, Yueming Wang, Yueming Wang, Jiajia Wen, Jiajia Wen, Gang Lv, Gang Lv, Chunlai Li, Chunlai Li, Jia Hou, Jia Hou, Liyin Yuan, Liyin Yuan, "The development of a cryogenic integrated system with the working temperature of 100K", Proc. SPIE 9821, Tri-Technology Device Refrigeration (TTDR), 98210B (17 May 2016); doi: 10.1117/12.2223908; https://doi.org/10.1117/12.2223908
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