CdSxSe1-x/ZnS semiconductor nanocrystal laser with sub 10kW/cm² threshold and 40nJ emission output at 600 nm
McLellan, Luke Jonathan and Guilhabert, Benoit and Laurand, Nicolas and Dawson, Martin D. (2016) CdSxSe1-x/ZnS semiconductor nanocrystal laser with sub 10kW/cm² threshold and 40nJ emission output at 600 nm. Optics Express, 24 (2). ISSN 1094-4087
|
Text (Mclellan-etal-OE2015-semiconductor-nanocrystal-laser-with-sub-10kWcm2-threshold)
Mclellan_etal_OE2015_semiconductor_nanocrystal_laser_with_sub_10kWcm2_threshold.pdf Accepted Author Manuscript License: Unspecified Download (912kB)| Preview |
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%.
Creators(s): |
McLellan, Luke Jonathan ![]() ![]() ![]() ![]() | Item type: | Article |
---|---|
ID code: | 54855 |
Notes: | © 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. |
Keywords: | semiconductor nanocrystal laser, quantum dots, CdSxSe1-x/ZnS , Optics. Light, Atomic and Molecular Physics, and Optics |
Subjects: | Science > Physics > Optics. Light |
Department: | Faculty of Science > Physics Faculty of Science > Physics > Institute of Photonics Technology and Innovation Centre > Photonics |
Depositing user: | Pure Administrator |
Date deposited: | 11 Dec 2015 01:49 |
Last modified: | 20 Jan 2021 23:40 |
Related URLs: | |
URI: | https://strathprints.strath.ac.uk/id/eprint/54855 |
Export data: |