Colloidal quantum dot random laser

Yujie Chen; Johannes Herrnsdorf; Benoit Jack Eloi Guilhabert; Yanfeng Zhang; Ian M. Watson; Erdan Gu; Nicolas Laurand; Martin D. Dawson

doi:10.1364/OE.19.002996

Colloidal quantum dot random laser

Yujie Chen, Johannes Herrnsdorf, Benoit Jack Eloi Guilhabert, Yanfeng Zhang, Ian M. Watson, Erdan Gu, Nicolas Laurand, Martin D. Dawson

Research output: Contribution to journal › Article

91 Citations (Scopus)

Abstract

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/cm2 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.

Original language	English
Pages (from-to)	2996-3003
Number of pages	8
Journal	Optics Express
Volume	19
Issue number	4
DOIs	https://doi.org/10.1364/OE.19.002996
Publication status	Published - 1 Feb 2011

Keywords

laser materials
multiple scattering
random laser action
optical amplification

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10.1364/OE.19.002996

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ADVANCED SOLID STATE LASER SOURCES AND SYSTEMS
Ferguson, A., Burns, D., Calvez, S., Dawson, M., Girkin, J., Hastie, J. & Kemp, A.
EPSRC (Engineering and Physical Sciences Research Council)
1/10/06 → 30/09/11
Project: Research

Cite this

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title = "Colloidal quantum dot random laser",

abstract = "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/cm2 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.",

keywords = "laser materials, multiple scattering, random laser action, optical amplification",

author = "Yujie Chen and Johannes Herrnsdorf and Guilhabert, {Benoit Jack Eloi} and Yanfeng Zhang and Watson, {Ian M.} and Erdan Gu and Nicolas Laurand and Dawson, {Martin D.}",

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AU - Chen, Yujie

AU - Herrnsdorf, Johannes

AU - Guilhabert, Benoit Jack Eloi

AU - Zhang, Yanfeng

AU - Watson, Ian M.

AU - Gu, Erdan

AU - Laurand, Nicolas

AU - Dawson, Martin D.

PY - 2011/2/1

Y1 - 2011/2/1

N2 - 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/cm2 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.

AB - 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/cm2 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.

KW - laser materials

KW - multiple scattering

KW - random laser action

KW - optical amplification

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SN - 1094-4087

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Colloidal quantum dot random laser

Abstract

Keywords

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ADVANCED SOLID STATE LASER SOURCES AND SYSTEMS

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