Colloidal quantum dot random laser

被引：118

作者：

Chen, Yujie ^{[1
]}

Herrnsdorf, Johannes ^{[1
]}

Guilhabert, Benoit ^{[1
]}

Zhang, Yanfeng ^{[1
]}

Watson, Ian M. ^{[1
]}

Gu, Erdan ^{[1
]}

Laurand, Nicolas ^{[1
]}

Dawson, Martin D. ^{[1
]}

机构：

[1] Univ Strathclyde, Inst Photon, SUPA, Glasgow G4 0NW, Lanark, Scotland

来源：

OPTICS EXPRESS | 2011年 / 19卷 / 04期

基金：

英国工程与自然科学研究理事会;

关键词：

SCATTERING MEDIA; POLYMER-FILMS; EMISSION; RESONATORS; GAIN;

D O I：

10.1364/OE.19.002996

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report random laser action in a system where optical amplification is provided by colloidal quantum dots (CQDs). This system is obtained by depositing from solution CdSe/ZnS core-shell CQDs into rough micron-scale grooves fabricated on the surface of a glass substrate. The combination of CQD random packing and of disordered structures in the glass groove enables gain and multiple scattering. Upon optical excitation, random laser action is triggered in the system above a 25-mJ/cm(2) threshold. Single-shot spectra were recorded to study the emission spectral characteristics and the results show the stability of the laser mode positions and the dominance of the modes close to the material gain maximum. (C) 2011 Optical Society of America

引用

页码：2996 / 3003

页数：8

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