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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 4 — Feb. 14, 2011
  • pp: 2996–3003

Colloidal quantum dot random laser

Yujie Chen, Johannes Herrnsdorf, Benoit Guilhabert, Yanfeng Zhang, Ian M. Watson, Erdan Gu, Nicolas Laurand, and Martin D. Dawson  »View Author Affiliations


Optics Express, Vol. 19, Issue 4, pp. 2996-3003 (2011)
http://dx.doi.org/10.1364/OE.19.002996


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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.

© 2011 OSA

OCIS Codes
(140.3380) Lasers and laser optics : Laser materials
(290.4210) Scattering : Multiple scattering

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: December 20, 2010
Revised Manuscript: January 24, 2011
Manuscript Accepted: January 24, 2011
Published: February 1, 2011

Virtual Issues
Vol. 6, Iss. 3 Virtual Journal for Biomedical Optics

Citation
Yujie Chen, Johannes Herrnsdorf, Benoit Guilhabert, Yanfeng Zhang, Ian M. Watson, Erdan Gu, Nicolas Laurand, and Martin D. Dawson, "Colloidal quantum dot random laser," Opt. Express 19, 2996-3003 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-4-2996


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