Projects per year
Abstract
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%.
Original language | English |
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Journal | Optics Express |
Volume | 24 |
Issue number | 2 |
Early online date | 10 Dec 2015 |
DOIs | |
Publication status | Published - 25 Jan 2016 |
Keywords
- semiconductor nanocrystal laser
- quantum dots
- CdSxSe1-x/ZnS
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Dive into the research topics of 'CdSxSe1-x/ZnS semiconductor nanocrystal laser with sub 10kW/cm² threshold and 40nJ emission output at 600 nm'. Together they form a unique fingerprint.Projects
- 3 Finished
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EPSRC Doctoral Training Grant - DTA, University of Strathclyde | McLellan, Luke
Laurand, N., Dawson, M. & McLellan, L.
EPSRC (Engineering and Physical Sciences Research Council)
1/10/13 → 16/02/18
Project: Research Studentship - Internally Allocated
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Gallium nitride enabled hybrid and flexible photonics
Dawson, M., Calvez, S., Gu, E., Martin, R., Skabara, P. & Watson, I.
EPSRC (Engineering and Physical Sciences Research Council)
1/04/11 → 31/03/15
Project: Research
Datasets
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CdSxSe1-x/ZnS semiconductor nanocrystal laser with sub 10kW/cm2 threshold and 40nJ emission output at 600 nm
Laurand, N. (Supervisor), McLellan, L. (Creator) & Guilhabert, B. J. E. (Contributor), University of Strathclyde, 2015
DOI: 10.15129/a948b08f-4f0c-480b-865a-26737553aef8
Dataset