RT lasing and efficient optical confinement in CdSe/ZnMgSSe submonolayer superlattices

被引：15

作者：

Krestnikov, IL

Maximov, MV

Sakharov, AV

Kop'ev, PS

Alferov, ZI

Ledentsov, NN

Bimberg, D

Torres, CMS

机构：

[1] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia

[2] Tech Univ Berlin, Inst Festkorperphys, D-10623 Berlin, Germany

[3] Berg Univ Gesamthsch Wuppertal, D-42097 Wuppertal, Germany

来源：

JOURNAL OF CRYSTAL GROWTH | 1998年 / 184卷

关键词：

CdSe/ZnMgSSe; quantum dots; excitons; lasing; waveguiding;

D O I：

10.1016/S0022-0248(98)80113-9

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The ground-state (GS) exciton transition is revealed in optical reflectance and photoluminescence (PL) spectra of structures with multiple sheets of nanoscale islands formed by submonolayer CdSe insertions in a ZnMgSSe matrix. The GS transition is absent, however, in the PL excitation (PLE) spectra, demonstrating a typical quantum dot-like PLE behavior. High exciton oscillator strength and lifted k-selection rule caused by exciton confinement permits room temperature zero-phonon lasing (460 nm) resonant to the spectral region of exciton-induced refractive index (n) enhancement without using thick cladding layers having a lower n. (C) 1998 Published by Elsevier Science B.V. All rights reserved.

引用

页码：545 / 549

页数：5

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APPLIED PHYSICS LETTERS, 1997, 70 (20) :2766-2767

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