MODELING OF THE OPTIMAL DESIGN OF THE COOLED THERMAL DIAPHRAGM OF THERMAL IMAGING DEVICES
A.R. Novoselov, S.V. Khryashchev, P.A. Aldochin, P.P. Dobrovolsky, K.P. Shatunov
a:2:{s:4:"TEXT";s:226:"Novosibirsk Branch of the Rzhanov Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, “Technology and Design Institute of Applied Microelectronics” (Branch ISP SB RAS “TDIAM”), Novosibirsk, Russia";s:4:"TYPE";s:4:"text";}
Keywords: photodetectors, cryostat, cooled diaphragm, infrared radiation
Abstract
The results of numerical simulation of the irradiation by parasitic radiation of a cooled matrix photodetector in a cryostat with different shapes and designs of the cold diaphragm are presented. The optimal shape of the cold diaphragm is found to be a cylinder with two internal blends (additional diaphragms). The level of irradiation of the matrix photodetector with parasitic radiation is about 9.82×10-05 W/cm2 with an uneven distribution over the area of about 3%.
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