Li, Qiang  ORCID: https://orcid.org/0000-0002-5257-7704, Wan, Yating, Liu, Alan Y., Gossard, Arthur C., Bowers, John E., Hu, Evelyn L. and Lau, Kei May
2016.
1.3-μm InAs quantum-dot micro-disk lasers on V-groove patterned and unpatterned (001) silicon.
Optics Express
24
(18)
, pp. 21038-21045.
10.1364/OE.24.021038
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Abstract
We report comparison of lasing dynamics in InAs quantum dot (QD) micro-disk lasers (MDLs) monolithically grown on V-groove patterned and planar Si (001) substrates. TEM characterizations reveal abrupt interfaces and reduced threading dislocations in the QD active regions when using the GaAs-on-V-grooved-Si template. The improved crystalline quality translates into lower threshold power in the optically pumped continuous-wave MDLs. Concurrent evaluations were also made with devices fabricated simultaneously on lattice-matched GaAs substrates. Lasing behaviors from 10 K up to room temperature have been studied systematically. The analyses spotlight insights into the optimal epitaxial scheme to achieve low-threshold lasing in telecommunication wavelengths on exact Si (001) substrates.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Physics and Astronomy |
| Publisher: | Optical Society of America |
| ISSN: | 1094-4087 |
| Date of First Compliant Deposit: | 25 May 2018 |
| Date of Acceptance: | 21 August 2016 |
| Last Modified: | 03 May 2023 07:07 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/111770 |
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