Abstract
| Language | English |
|---|---|
| Pages | 2996-3003 |
| Number of pages | 8 |
| Journal | Optics Express |
| Volume | 19 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 1 Feb 2011 |
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Keywords
- laser materials
- multiple scattering
- random laser action
- optical amplification
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Colloidal quantum dot random laser. / Chen, Yujie; Herrnsdorf, Johannes; Guilhabert, Benoit Jack Eloi; Zhang, Yanfeng; Watson, Ian M.; Gu, Erdan; Laurand, Nicolas; Dawson, Martin D.
In: Optics Express, Vol. 19, No. 4, 01.02.2011, p. 2996-3003.Research output: Contribution to journal › Article
TY - JOUR
T1 - Colloidal quantum dot random laser
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
UR - http://www.scopus.com/inward/record.url?scp=79951618943&partnerID=8YFLogxK
U2 - 10.1364/OE.19.002996
DO - 10.1364/OE.19.002996
M3 - Article
VL - 19
SP - 2996
EP - 3003
JO - Optics Express
T2 - Optics Express
JF - Optics Express
SN - 1094-4087
IS - 4
ER -