FEMTOSECOND-PUMP, CONTINUUM-PROBE NONLINEAR ABSORPTION IN GAAS

被引：49

作者：

STANTON, CJ ^{[1
]}

BAILEY, DW ^{[1
]}

HESS, K ^{[1
]}

机构：

[1] UNIV ILLINOIS,BECKMAN INST,URBANA,IL 61801

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.65.231

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present calculations of femtosecond-pump, continuum-probe nonlinear absorption in GaAs, including effects of electrons and heavy, light, and split-off holes. To account for hole-band nonparabolicity and anisotropy, a 30×30 k p Hamiltonian is diagonalized. Carrier dynamics are determined using an ensemble Monte Carlo method. Differential transmission spectra are obtained from the carrier distributions and directly compared with experiments. Our results show that pumpe"continuum-probe experiments provide the first direct evidence for a redistribution of holes on a femtosecond scale. © 1990 The American Physical Society.

引用

页码：231 / 234

页数：4

共 18 条

[1] GAAS, ALAS, AND ALXGA1-XAS - MATERIAL PARAMETERS FOR USE IN RESEARCH AND DEVICE APPLICATIONS [J].