PICOSECOND QUANTUM-BEAT SPECTROSCOPY OF BOUND EXCITONS IN CDS

被引：44

作者：

STOLZ, H

LANGER, V

SCHREIBER, E

PERMOGOROV, S

VONDEROSTEN, W

机构：

[1] Fachbereich Physik, Universität-Gesamthochschule, D-4790 Paderborn

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.67.679

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the first observation of quantum beats in the resonance fluorescence of a bound exciton in a semiconductor, the ionized-donor exciton complex in CdS. Measurements of the polarization behavior and magnetic-field dependence of the beats permitted a detailed investigation of strain effects and magneto-optical parameters of the states. From the damping of the beats, coherence times of the order of several hundreds of picoseconds are deduced. For the neutral-donor and -acceptor bound exciton states, very rapid dephasing with coherence times of the order of 20 ps is found.

引用

页码：679 / 682

页数：4

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