Project supported by the National Natural Science Foundation of China(Grant Nos.11574362,61210014,11374340,and 11474205);the Innovative Clean-Energy Research and Application Program of Beijing Municipal Science and Technology Commission of China(Grant No.Z151100003515001);the National Key Technology R&D Program of China(Grant No.2016YFB0400302)。
We present a method to extend the operating wavelength of the interband transition quantum well photodetector from an extended short-wavelength infrared region to a middle-wavelength infrared region. In the modified I...