Temperature dependence of the wavelength of quantum dot lasers

Thomson, John Duncan, Summers, Huw David, Smowton, Peter Michael ORCID: https://orcid.org/0000-0002-9105-4842, Herrmann, E., Blood, Peter and Hopkinson, M. 2000. Temperature dependence of the wavelength of quantum dot lasers. Presented at: 2000 IEEE 17th International Semiconductor Laser Conference, Monterey, CA, USA, 25 - 28 September 2000. 2000 IEEE 17th International Semiconductor Laser Conference, 2000: Conference Digest. Los Alamitos, CA: IEEE, pp. 135-136. 10.1109/ISLC.2000.882324

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Abstract

We have studied the properties of quantum dot lasers comprising a single layer of InGaAs dots set in a single GaAs quantum well 100 A wide in a waveguide core region of AlGaAs with cladding layers of AlGaAs. Measurements have been made of the optical absorption, optical mode loss and gain spectra as a function of temperature by single pass technique using a device with a segmented contact. We have made detailed studies of the gain spectra as a function of temperature which have enabled us to identify the origins of this temperature insensitivity and to infer information regarding the form of the broadened distribution of dot states.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QC Physics
Publisher:	IEEE
ISBN:	0780362594
Last Modified:	20 Oct 2022 09:11
URI:	https://orca.cardiff.ac.uk/id/eprint/30924

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