XIE, Z. and HUANG, J. and CHAI, X. and DENG, Z. and CHEN, Y. and LU, Q. and XU, Z. and CHEN, J. and ZHOU, Y. and CHEN, B. (2020) High-speed mid-wave infrared interband cascade photodetector at room temperature. Optics Express, 28 (24). pp. 36915-36923. ISSN 1094-4087
Full text not available from this repository.Abstract
High-speed mid-wave infrared (MWIR) photodetectors have important applications in the emerging areas such high-precision frequency comb spectroscopy and light detection and ranging (LIDAR). In this work, we report a high-speed room-temperature mid-wave infrared interband cascade photodetector based on a type-II InAs/GaSb superlattice. The devices show an optical cut-off wavelength around 5 μm and a 3-dB bandwidth up to 7.04 GHz. The relatively low dark current density around 9.39 × 10-2 A/cm2 under -0.1 V is also demonstrated at 300 K. These results validate the advantages of ICIPs to achieve both high-frequency operation and low noise at room temperature. Limitations on the high-speed performance of the detector are also discussed based on the S-parameter analysis and other RF performance measurement.