Gain Control in Semiconductor Quantum Dots via State-Resolved Optical Pumping

被引：107

作者：

Cooney, Ryan R. ^{[1
]}

Sewall, Samuel L. ^{[1
]}

Sagar, D. M. ^{[1
]}

Kambhampati, Patanjali ^{[1
]}

机构：

[1] McGill Univ, Dept Chem, Montreal, PQ H3A 2K6, Canada

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 12期

基金：

加拿大自然科学与工程研究理事会;

关键词：

LIGHT AMPLIFICATION; NANOCRYSTALS; CDSE; DEPENDENCE; EMISSION; RODS;

D O I：

10.1103/PhysRevLett.102.127404

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Excitonic state-resolved optical pumping experiments were performed on strongly confined semiconductor quantum dots. We demonstrate for the first time that optical gain is dependent upon the initial excitonic state. By prescribing the specific multiexcitonic states which can create, block, and ultimately control optical gain spectra, we recover the theoretically predicted size independence, even in systems which previously showed zero gain. In addition, we show for the first time that stimulated emission in quantum dots can be controlled via specific multiexcitonic interactions.

引用

页数：4

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