HOT器件用旋转式斯特林制冷机研究进展

Overview of Micro-Rotary Stirling Cryocoolers for HOT IR detectors

随着碲镉汞(mercury cadmium telluride,MCT)材料制备工艺的改进和提升,芯片组件的暗电流得到一定程度的抑制,红外探测器芯片组工作温度上升成为发展趋势。高工作温度(high operation temperature)器件的发展推动着小型低温斯特林制冷机向更小尺寸(size)、更小重量(weight)、更低功耗(power)、更低成本(price)、更好性能(performance)的方向发展。本文介绍了HOT器件用斯特林制冷机的SWaP3设计理念,薄壁管短冷指、高效小尺寸控制器、综合热管理、可靠性预测等设计技术,总结了近年国内外HOT器件用旋转式斯特林制冷机的研制进展。

With the improvement and promotion of the Mercury Cadmium Telluride(MCT)material preparation process,the dark current of the FPA is suppressed to a certain extent,and an increase in the operating temperature of IR detectors has become a development trend.The development of high-operatingtemperature IR detectors promotes the development of micro-Stirling cryocoolers to reduce the size,weight,power consumption,and cost,and promote their performance.The SWaP3 design concept of Stirling cryocoolers for HOT IR detectors is presented.Design techniques such as thin-walled tube short cold fingers,high-efficiency small-size controllers,comprehensive thermal management,reliability prediction,and the recent domestic and foreign development status of Stirling cryocoolers for HOT IR detectors are summarized.