Yang Liu

I received my B.S. degree from the University of Science and Technical of China in 1998,  and the Ph.D. degree in physics from the University of Illinois at Urbana-Champaign (UIUC) in 2002. From 1999 to 2002,  I was a research assistant in the Computational Electronics Group at UIUC under the supervision of Prof. Karl Hess, where my work was on the device-level modeling and simulation of Vertical-Cavity Surface-Emitting Lasers (VCSELs) based on a comprehensive laser diode simulator MINIASE. At the beginning of year 2003, I spent three months as a postdoctoral research associate in Prof. Kent D. Choquette's Photonic Device Research Group, where I studied the electrical turn-on characteristics and thermal rollover effects of VCSELs. I have been affiliated with Prof. Dutton's TCAD group at Stanford as a research associate since March, 2003. My current research interests include the design and simulation of novel photonic crystal based LEDs and laser diodes. I am also interested in the tunneling related effects in Field Effect Transistors (FETs). The simulation platform of my work is a general semiconductor device and process simulator, PROPHET.

Journal Publications:

• Y. Liu, K. D. Choquette, and K. Hess, “The electrical turn-on characteristics of vertical-cavity surface-emitting lasers”, Applied Physics Letters, vol. 83, pp. 4104, Nov. 17, 2003
• W.-C. Ng, Y. Liu, and K. Hess, “Resonant-wavelength control and optical-confinement analysis for graded SCH VCSELs using a self-consistent effective-index method”, IEEE Journal of Lightwave Technology, vol. 21, pp. 555, 2003
• Y. Liu, W.-C. Ng, B. Klein, and K. Hess, “Effects of spatial non-uniformity of optical transverse modes on the modulation response of vertical-cavity surface-emitting lasers”, IEEE Journal of Quantum Electronics, vol. 39, pp. 99, 2003
• Y. Liu, W.-C. Ng, F. Oyafuso, B. Klein, and K. Hess, “Simulating the modulation response of VCSEL’s: the effects of diffusion capacitance and spatial hole-burning”, IEE Proc.-Optoelectronics, vol. 149, pp. 182, 2002
• Y. Liu, F. Oyafuso, W.-C. Ng, and K. Hess, “Numerical study of minority carrier induced diffusion capacitance in VCSELs using MINILASE”, Journal of Computational Electronics, vol. 1, pp. 119, 2002