中国物理B ›› 2001, Vol. 10 ›› Issue (9): 840-843.doi: 10.1088/1009-1963/10/9/313
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
雷啸霖, 刘世勇
Lei Xiao-lin (雷啸霖), Liu Shi-yong (刘世勇)
摘要: We propose a simple method to calculate the spectrum of spontaneous terahertz (THz) emission from hot carriers in two-dimensional semiconductors by means of transport quantities, which are easily obtained during the process of solving the transport problem using the recently developed balance-equation approach for THz-driven transport. The method has been applied to examine the surface emission from a GaAs/AlGaAs heterojunction and the edge emission from a GaAs-based multiple quantum-well system subjected to strong dc biases. The theoretical results obtained are in reasonably good agreement with measurements.
中图分类号: (High-field and nonlinear effects)