Papers by Author: Wei Zhou

Abstract: Based on the dynamic analysis and numerical computation of quantum cascade laser(QCL), a simple equivalent circuit model of QCL was established, in which we considered the spontaneous emission effect for QCL's start delay. The direct current(DC), transient and frequency response characteristics of QCL were obtained by means of the circuit simulation of PSPICE program, and some relevant parameters that may affect the QCL performance have been analyzed. The results of simulation are consistent with that of numerical calculation in previous literatures.

Abstract: This paper investigated on the optimization design of the AlGaN/GaN High electron mobility transistors (HEMT) with gate terminal field-plate (FPs) structure and proposed an optimization method at a given work conditions, such as drain bias Vd . Though the simulation, we obtain two fitting formula about the FPs thickness tox and the minimum length lmin.