Dephasing of excitons in ZnSe and ZnSe/ZnSxSe1-x quantum wells

被引：2

作者：

Wagner, HP

Lehmann, J

Hahn, B

机构：

[1] Universitaet Regensburg, Regensburg

来源：

JOURNAL OF LUMINESCENCE | 1995年 / 66-7卷 / 1-6期

关键词：

D O I：

10.1016/0022-2313(95)00112-3

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We investigate the optical dephasing of photoexcited excitons in two different ZnSe/ZnSxSe1-x layer structures by means of time-integrated four-wave mixing using subpicosecond pulses. We find dephasing times of the order of 0.5 ps for the exciton ground state at 9 K. The dephasing time shows a dependence on the excitation intensity due to exciton-exciton scattering. Simultaneous excitation of the exciton ground slate and higher exciton states leads to the appearance of the quantum beats.

引用

页码：84 / 88

页数：5

共 7 条

[1] THEORY OF QUANTUM BEAT AND POLARIZATION INTERFERENCE IN 4-WAVE-MIXING [J].

ERLAND, J ;

BALSLEV, I .

PHYSICAL REVIEW A, 1993, 48 (03) :R1765-R1768

[2] FEMTOSECOND COHERENT SPECTROSCOPY OF BULK ZNSE AND ZNCDSE/ZNSE QUANTUM-WELLS [J].

FISCHER, AJ ;

KIM, DS ;

HAYS, J ;

SHAN, W ;

SONG, JJ ;

EASON, DB ;

REN, J ;

SCHETZINA, JF ;

LUO, H ;

FURDYNA, JK ;

ZHU, ZQ ;

YAO, T ;

KLEM, JF ;

SCHAFER, W .

PHYSICAL REVIEW LETTERS, 1994, 73 (17) :2368-2371

[3] BLUE-GREEN LASER-DIODES [J].

HAASE, MA ;

QIU, J ;

DEPUYDT, JM ;

CHENG, H .

APPLIED PHYSICS LETTERS, 1991, 59 (11) :1272-1274

[4] DEPHASING OF EXCITONS IN A CDTE/CD0.86MN0.14TE MULTIPLE-QUANTUM-WELL [J].

HELLMANN, R ;

KOCH, M ;

FELDMANN, J ;

CUNDIFF, ST ;

GOBEL, EO ;

YAKOVLEV, DR ;

WAAG, A ;

LANDWEHR, G .

JOURNAL OF CRYSTAL GROWTH, 1994, 138 (1-4) :791-795

[5]

KUHL J, 1989, ADV SOLID STATE PHYS, V29, P157

[6] GIANT NONLINEAR PHASE-SHIFT AT EXCITON RESONANCE IN ZNSE [J].

SAIKI, T ;

TAKEUCHI, K ;

KUWATA-GONOKAMI, M ;

MITSUYU, T ;

OHKAWA, K .

APPLIED PHYSICS LETTERS, 1992, 60 (02) :192-194

[7] ZNSE-BASED MOVPE AND MBE GROWN LEDS [J].

STANZL, H ;

REISINGER, T ;

WOLF, K ;

KASTNER, M ;

HAHN, B ;

GEBHARDT, W .

PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1995, 187 (02) :303-307

← 1 →