Title: Recent Progress in Interband Cascade Devices
Speaker: Prof. Rui Qing Yang（University of Oklahoma，USA）
Time: June 8, 2015 10:00AM
Venue: No. 101 Meeting Room, IOS, CAS
Abstract: In this talk, I will briefly review the operation principles of interband cascade (IC) devices – IC lasers, IC infrared photodetectors (ICIPs) and IC photovoltaic (PV) cells, and discuss their recent progress. IC lasers were proposed first for achieving efficient mid-infrared laser source [1] by taking advantage of the broken band-gap alignment in type-II InAs/Ga(In)Sb quantum wells to form interband cascade stages with high quantum efficiency and low power consumption. GaSb-based type-II IC lasers have been operated successfully in Curiosity Rover on Mars and are already available commercially. In this talk, I will discuss two new directions – type-I IC lasers and InAs-based IC lasers. Both have been recently demonstrated at room temperature and above in cw operation [2-3]. Compared to IC lasers, ICIPs and ICPV cells [4-7] are in early development phases, their prospects and some recent experimental results will be discussed.
1. R. Q. Yang, at 7th Inter. Conf. on Superlattices, Microstructures and Microdevices, Banff, Canada, August, 1994; Superlattices and Microstructures 17, 77 (1995).
2. Y. Jiang, et al., Appl. Phys. Lett., 106, 041117 (2015).
3. New results at University of Oklahoma (to be published 2015).
4. R. Q. Yang, et al., J. Appl. Phys. 107, No. 5, 054514 (2010).
5. R. T. Hinkey and R. Q. Yang, J. Appl. Phys. 114, 104506 (2013).
6. R. Q. Yang, et al., Proc. SPIE. 8993, 899310 (2014).
7. R. T. Hinkey, R. Q. Yang, Semicond. Sci. Technol, 30, 015013 (2015).
Biography：Dr. Yang received the B.Sc. degree in physics from Zhejiang University in 1982, and the M.Sc. and Ph.D. degrees in physics from Nanjing University in 1984 and 1987, respectively. He is the inventor of interband cascade (IC) lasers with research activities ranging from condensed matter physics to semiconductor quantum devices. Prior to joining OU as a professor in 2007, he was a Principal Member of Engineering Staff and a Task Manager at the Jet Propulsion Laboratory (JPL) in California, where he led the development of advanced mid-IR IC lasers for applications in Earth sciences and planetary explorations. He received the Edward Stone Award in 2007 from JPL for outstanding research publication and the successful accelerated infusion of cutting-edge interband cascade semiconductor laser technology into flight mission readiness. He is a fellow of both OSA and IEEE.