摘要
采用飞秒激光光谱技术研究了ＬＴ－ＧａＡｓ受激载流子的超快弛豫特性，讨论了载流子散射、载流子－声子互作用和缺陷捕获对载流子弛豫特性的贡献，测定载流子的捕获时间约为５００ｆｓ。
The ultrafast dynamics of nonequilibrium carriers of LT GaAs was studied using femtosecond spectroscopy. The effects of carrier initial scattering, carrier phonon interaction and carrier trapping on carrier relaxation properties were analyzed. A carrier trapping time of 500fs was measured, which was found to increase with decreasing carrier excess energy.
出处
《红外与毫米波学报》
SCIE
EI
CAS
CSCD
北大核心
1999年第3期195-200,共6页
Journal of Infrared and Millimeter Waves
基金
国家自然科学基金
广东省自然科学基金
关键词
饱和吸收光谱
砷化镓
低温
载流子
超快动力学
LT GaAs, femtosecond absorption saturation spectra, trapping by defects.
