GaAs/AlGaAs QWIP IRFPA for 10. 55 μm long wavelength

被引：0

作者：

Li X. ^{[1
]}

Li N. ^{[1
]}

Xu J. ^{[1
]}

Chu K. ^{[1
]}

Xu G. ^{[1
]}

Wang L. ^{[1
]}

Zhang Y. ^{[1
]}

Zhu L. ^{[1
]}

Wang J. ^{[1
]}

Lu W. ^{[1
]}

机构：

[1] Institute of Shanghai Technical Physics, Chinese Academy of Sciences, Shanghai

来源：

| 1600年 / Chinese Society of Astronautics卷 / 49期

关键词：

Long wavelength infrared; Optical couple optimization; QWIP FPA;

D O I：

10.3788/IRLA202049.0103008

中图分类号：

学科分类号：

摘要：

640×512 Quantum Well Infrared Photo-detector(QWIP) long wavelength infrared(LWIR) focal plane arrays(FPA) were made by using GaAs/AlGaAs quantum well structure. The response spectra were at 10.55 μm. Integrated with rotation sterling cooler which gave a temperature of 50 K, the FPA was measured to find the results that NETD was about 22.5 mK. The FPA assembly kept good performance after the switch-on-off cycling test and thermal vacuum test. The illumination non-uniformity of the focal plane with a cold shield was calculated with a numerical method. The results were compared with the approximate analytic method. It is shown that numerical method should be used for small F -numbers. Thus, the measured non-uniformity is believed to be dominated by the illumination non-uniformity. By using the MEEP FDTD software, calculation about the near-field photo-coupled electrical-field energy were designed and results show that current QWIP structure parameters are near optimized in term of optical diffraction. © 2020, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.

引用

共 4 条

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[2] Jhabvala M., Choi K., Waczynski A., Et al., Performance Ofthe QWIP Focal Plane Arrays for NASA' s Landsat Data Continuity Mission, SPIE, Infrared Technology and Applications XXXVII, 8012, (2011)
[3] Zhou X., Li N., Lu W., Progress in quantum well and quantum cascade infrared photodetectors in SITP, Chinese Phys B, 28, 2, (2019)
[4] Oskooi A., Roundy D., Ibanescu M., Et al., MEEP: A flexible free-software package for electromagnetic simulations by the FDTD method, Computer Physics Communications, 181, pp. 687-702, (2010)

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