Abstract
| Original language | English |
|---|---|
| Journal | Optics Express |
| Volume | 24 |
| Issue number | 2 |
| Early online date | 10 Dec 2015 |
| DOIs | |
| Publication status | Published - 25 Jan 2016 |
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Keywords
- semiconductor nanocrystal laser
- quantum dots
- CdSxSe1-x/ZnS
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CdSxSe1-x/ZnS semiconductor nanocrystal laser with sub 10kW/cm² threshold and 40nJ emission output at 600 nm. / McLellan, Luke Jonathan; Guilhabert, Benoit; Laurand, Nicolas; Dawson, Martin D.
In: Optics Express, Vol. 24, No. 2, 25.01.2016.Research output: Contribution to journal › Article
TY - JOUR
T1 - CdSxSe1-x/ZnS semiconductor nanocrystal laser with sub 10kW/cm² threshold and 40nJ emission output at 600 nm
AU - McLellan, Luke Jonathan
AU - Guilhabert, Benoit
AU - Laurand, Nicolas
AU - Dawson, Martin D.
N1 - © 2015 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.
PY - 2016/1/25
Y1 - 2016/1/25
N2 - A colloidal quantum dot laser emitting at 600 nm with a sub 10kW/cm2 threshold at 5ns pulse pumping is reported. The device has a second order distributed feedback cavity for vertical emission and incorporates a bilayer planar waveguide structure based on a film of yellow-orange alloyed-core/shell CdSxSe1-x/ZnS quantum dots over-coated with polyvinyl alcohol. A study of the amplified spontaneous regime indicates that the quantum dot gain region behaves like a quasi-three level system and that the bilayer structure design increases the modal gain compared to a single layer of quantum dots. An output of 40nJ per pulse is measured for a total pump-to-signal efficiency above threshold of 3%.
AB - A colloidal quantum dot laser emitting at 600 nm with a sub 10kW/cm2 threshold at 5ns pulse pumping is reported. The device has a second order distributed feedback cavity for vertical emission and incorporates a bilayer planar waveguide structure based on a film of yellow-orange alloyed-core/shell CdSxSe1-x/ZnS quantum dots over-coated with polyvinyl alcohol. A study of the amplified spontaneous regime indicates that the quantum dot gain region behaves like a quasi-three level system and that the bilayer structure design increases the modal gain compared to a single layer of quantum dots. An output of 40nJ per pulse is measured for a total pump-to-signal efficiency above threshold of 3%.
KW - semiconductor nanocrystal laser
KW - quantum dots
KW - CdSxSe1-x/ZnS
UR - https://www.osapublishing.org/oe/
U2 - 10.1364/OE.24.00A146
DO - 10.1364/OE.24.00A146
M3 - Article
VL - 24
JO - Optics Express
JF - Optics Express
SN - 1094-4087
IS - 2
ER -