Shutts, Samuel  ORCID: https://orcid.org/0000-0001-6751-7790, Smowton, Peter Michael ORCID: https://orcid.org/0000-0002-9105-4842 and Krysa, A. B.
2013.
InP quantum dot lasers with temperature insensitive operating wavelength.
Applied Physics Letters
103
(6)
, 061106.
10.1063/1.4817732
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Abstract
We quantify the mechanisms that govern the lasing wavelength in edge-emitting InP/AlGaInP quantum dot (QD) lasers, by characterising the constituent factors controlling the temperature dependence of the gain peak wavelength. We show that a regime exists where the temperature coefficient of the bandgap can be compensated by the increasing wavelength-shift associated with state-filling in the QD ensemble, necessary to recover the gain peak magnitude. We demonstrate cleaved-facet edge-emitting lasers with a wavelength temperature dependence of 0.03 nm/K, similar to the temperature dependence of a Bragg stack fabricated in this material and approximately a sixth of the dependence of the bandgap.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Physics and Astronomy |
| Subjects: | Q Science > QC Physics |
| Additional Information: | Pdf uploaded in accordance with publisher's policy at http://www.sherpa.ac.uk/romeo/issn/0003-6951/ (accessed 20/02/2014). |
| Publisher: | American Institute of Physics |
| ISSN: | 0003-6951 |
| Date of First Compliant Deposit: | 30 March 2016 |
| Last Modified: | 12 May 2023 17:36 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/53194 |
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