(ZN,CD)SE/ZNSE QUANTUM-WELL LASERS - EXCITONIC GAIN IN AN INHOMOGENEOUSLY BROADENED QUASI-2-DIMENSIONAL SYSTEM

被引：162

作者：

DING, J ^{[1
]}

HAGEROTT, M ^{[1
]}

ISHIHARA, T ^{[1
]}

JEON, H ^{[1
]}

NURMIKKO, AV ^{[1
]}

机构：

[1] BROWN UNIV,DEPT PHYS,PROVIDENCE,RI 02912

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 16期

关键词：

D O I：

10.1103/PhysRevB.47.10528

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Optical properties of a strongly excitonic quasi-two-dimensional system in a wide-band-gap II-VI semiconductor heterostructure are investigated in terms of the relationship between absorption and stimulated emission. In particular, the optical gain in (Zn,Cd)Se/ZnSe quantum-well lasers is demonstrated to be of excitonic nature over a wide range of temperatures, and to occur at electron-hole pair densities below the exciton-electron hole plasma transition. Both steady-state and transient (picosecond and femtosecond) spectroscopic techniques have been applied to detail exciton kinetics within the n = 1 heavy-hole exciton resonance. A phenomenological model of optical gain is proposed; originating from an inhomogeneously broadened exciton resonance and including the effects of exciton-phonon interaction.

引用

页码：10528 / 10542

页数：15

共 37 条

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