supported by National Natural Science Foundation of China (Grant Nos 50672079,60336010 and 60676027);National Basic Research Program of China (Grant No 2007CB613400)
The hole subband structures and effective masses of tensile strained Si/Sil-yGey quantum wells are calculated by using the 6 × 6 k·p method. The results show that when the tensile strain is induced in the quantum we...
The waveguide design is one of the most important parts in a terahertz quantum cascade laser(QCL). Si/SiGe QCL waveguides, based on the Drude model and finite-difference time-domain (FDTD) method, are designed by ...