DEPHASING OF EXCITONS IN QUANTUM-WELL STRUCTURES STUDIED BY PICOSECOND TIME-RESOLVED RESONANT RAYLEIGH-SCATTERING

被引：16

作者：

STOLZ, H ^{[1
]}

SCHWARZE, D ^{[1
]}

VONDEROSTEN, W ^{[1
]}

WEIMANN, G ^{[1
]}

机构：

[1] TECH UNIV MUNICH,WALTER SCHOTTKY INST,W-8046 GARCHING,GERMANY

来源：

SUPERLATTICES AND MICROSTRUCTURES | 1991年 / 9卷 / 04期

关键词：

D O I：

10.1016/0749-6036(91)90181-P

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Electronic states in solids with disorder give rise to an elastic (Rayleigh) contribution to the scattering spectrum which becomes resonantly enhanced for excitation in the electronic transition. It is shown theoretically that from this resonant Rayleigh process, if temporally resolved, the coherence time of the electronic states may be deduced. Experimentally this is demonstrated for the first time by studying the n = 1 heavy-hole exciton in GaAs/AlGaAs quantum well structures. Employing picosecond time-resolved spectroscopy and analyzing the data within the developed theory, coherence times are found between 5 and 30 ps in agreement with earlier results obtained by non-linear optical techniques. © 1991.

引用

页码：511 / 515

页数：5

共 9 条

[1] TRANSIENT POLARIZATION CHARACTERISTICS ASSOCIATED WITH RESONANT LIGHT-SCATTERING BY A DEGENERATE 2-LEVEL SYSTEM [J].

AIHARA, M .

PHYSICAL REVIEW A, 1978, 18 (02) :606-616

[2] TIME-DEPENDENT PHYSICAL SPECTRUM OF LIGHT [J].

EBERLY, JH ;

WODKIEWICZ, K .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA, 1977, 67 (09) :1252-1261

[3] RESONANT RAYLEIGH-SCATTERING FROM AN INHOMOGENEOUSLY BROADENED TRANSITION - A NEW PROBE OF THE HOMOGENEOUS LINEWIDTH [J].

HEGARTY, J ;

STURGE, MD ;

WEISBUCH, C ;

GOSSARD, AC ;

WIEGMANN, W .

PHYSICAL REVIEW LETTERS, 1982, 49 (13) :930-932

[4]

LANDAU LD, 1959, ELECTRODYNAMICS CONT, pCH14

[5]

LOUDON R, 1983, QUANTUM THEORY LIGHT, V2

[6] OPTICAL DEPHASING OF HOMOGENEOUSLY BROADENED TWO-DIMENSIONAL EXCITON-TRANSITIONS IN GAAS QUANTUM-WELLS [J].

SCHULTHEIS, L ;

HONOLD, A ;

KUHL, J ;

KOHLER, K ;

TU, CW .

PHYSICAL REVIEW B, 1986, 34 (12) :9027-9030

[7] TRANSIENT OPTICAL ALIGNMENT AND RELAXATION OF EXCITONS IN GAAS/ALGAAS QUANTUM WELLS [J].

STOLZ, H ;

SCHWARZE, D ;

VONDEROSTEN, W ;

WEIMANN, G .

SUPERLATTICES AND MICROSTRUCTURES, 1989, 6 (03) :271-282

[8]

STOLZ H, 1990, IN PRESS J LUMINESC

[9]

YAHMA T, 1979, J PHYS SOC JPN, V47, P1620

← 1 →