NONLINEAR OPTICAL-ABSORPTION AND DYNAMICS IN QUANTUM-WELLS

被引：2

作者：

JIANG, M

WANG, HL

STEEL, DG

机构：

[1] Harrison M. Randall Laboratory of Physics, University of Michigan, Ann Arbor

来源：

APPLIED PHYSICS LETTERS | 1992年 / 61卷 / 11期

关键词：

D O I：

10.1063/1.107572

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present measurements of differential transmission and four-wave mixing in GaAs quantum well structures at 1.8 K near the inhomogeneously broadened lowest heavy-hole (hh1) exciton resonance using narrow band cw excitation. The data show an increase in absorption and an excitation lifetime of order 1-10-mu-s outside the spectral hole produced by the pump. The long lifetime and the experimentally determined absence of excitation spatial diffusion in this region suggests that optical absorption produces electron-hole pairs that are correlated but separately localized due to disorder. A phenomenological model is proposed to explain the nonlinear response based on two-photon absorption.

引用

页码：1301 / 1303

页数：3

共 14 条

[11] MEASUREMENT OF PHONON-ASSISTED MIGRATION OF LOCALIZED EXCITONS IN GAAS/ALGAAS MULTIPLE-QUANTUM-WELL STRUCTURES [J].

WANG, H ;

JIANG, M ;

STEEL, DG .

PHYSICAL REVIEW LETTERS, 1990, 65 (10) :1255-1258

[12] HIGH-RESOLUTION NONLINEAR LASER SPECTROSCOPY OF EXCITON RELAXATION IN GAAS QUANTUM-WELLS [J].

WANG, H ;

STEEL, DG .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1991, 53 (06) :514-522

[13] DOES LUMINESCENCE SHOW SEMICONDUCTOR INTERFACES TO BE ATOMICALLY SMOOTH [J].

WARWICK, CA ;

JAN, WY ;

OURMAZD, A ;

HARRIS, TD .

APPLIED PHYSICS LETTERS, 1990, 56 (26) :2666-2668

[14] OPTICAL CHARACTERIZATION OF INTERFACE DISORDER IN GAAS-GA1-XALXAS MULTI-QUANTUM WELL STRUCTURES [J].

WEISBUCH, C ;

DINGLE, R ;

GOSSARD, AC ;

WIEGMANN, W .

SOLID STATE COMMUNICATIONS, 1981, 38 (08) :709-712

← 1 2 →