Monte Carlo study of the screening effect of carriers on terahertz radiation from InAs with high excitation intensity.
The dynamics of terahertz radiation from InAs were investigated by the ensemble Monte Carlo simulation method. Our simulations indicated that under high-intensity excitation it is the ratio of carrier screening to the carrier-polar optical phonon scattering that has an obvious influence in high-frequency components of terahertz pulses; that is, the amplitudes of high-frequency spectra are reduced with increased excitation intensity. Our calculated results qualitatively reproduce recently published experimental data.
Liu
Dong-Feng
DF
School of Information Engineering, Guangdong University of Technology, Guangzhou, China. dong_feng_liu@yahoo.com.cn
Tan
Yi-Zhi
YZ