Author(s): Zhou, XC (Zhou, Xu-chang); Huang, JL (Huang, Jianliang); Wang, HP (Wang, Haipeng); Kong, JC (Kong, Jincheng); Li, JB (Li, Junbin); Mu, YC (Mu, Yingchun); Zhang, YH (Zhang, Yanhua); Ma, WQ (Ma, Wenquan); Ren, H (Ren, Hai); Li, DS (Li, Dongsheng); Jiang, Z (Jiang, Zhi); Sun, H (Sun, Hao); Zhao, CB (Zhao, Canbing)

Source: INFRARED PHYSICS & TECHNOLOGY Volume: 128 Article Number: 104539 DOI: 10.1016/j.infrared.2022.104539 Early Access Date: JAN 2023 Published: JAN 2023

Abstract: We have demonstrated dual-band infrared focal plane arrays (FPA) using type II InAs/GaSb superlattice photodetector with simultaneous detection in both the mid-and the long-wavelength (MW/LW) atmospheric windows of 3-5 lm and of 8-12 lm. The material comprises two back-to-back photodiodes sandwiched in be-tween two N-type contacts and separated by a common P-type ground contact, with the structure of MW and LW channel optimized separately. The three-terminal architecture was used to realize the simultaneous and spatially coincident detection of the MW and LW signal. The temporal noise equivalent difference of the 384 x 288 FPA is 17 mK for MW channel with 4.9 lm cut-off wavelength, and 19 mK for LW channel with 9.7 lm cut-off wavelength at 78 K. The camera with this T2SL FPA shows high quality dual-band imaging capability.

Accession Number: WOS:000919320200001

ISSN: 1350-4495

eISSN: 1879-0275

Full Text: https://www.sciencedirect.com/science/article/pii/S1350449522005205?via%3Dihub