Very long wavelength infrared focal plane arrays with 50% cutoff wavelength based on type-II InAs/GaSb superlattice

Han Xi^{1, 2}, Xiang Wei^{1, 2}, Hao Hong-Yue^{1, 2}, Jiang Dong-Wei^{1, 2}, Sun Yao-Yao^{1, 2}, Wang Guo-Wei^{1, 2}, Xu Ying-Qiang^{1, 2}, Niu Zhi-Chuan^{1, 2, †}

(color online) A thermal image, acquired using a 320 × 256 VLWIR FPA at 65 K, and a mirror image reflected by a desk located in front of the researcher. (b)Responsivity of the array at 65 K.