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Long wavelength quantum-dot lasers selectively populated using tunnel injection

George, Adrian A., Smowton, Peter Michael ORCID:, Mi, Z. and Bhattacharya, P. 2007. Long wavelength quantum-dot lasers selectively populated using tunnel injection. Semiconductor Science and Technology 22 (5) , pp. 557-560. 10.1088/0268-1242/22/5/018

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Using measured amplified spontaneous emission data, we have derived and analysed the carrier distribution of a five-layer tunnelling injection quantum-dot structure at temperatures of 300 K and 350 K. The results are consistent with the direct injection of electrons from the injector well into a subset of lower energy dot states. The carrier distribution spectra contain features which suggest that dots of a particular size within the ensemble are preferentially populated leading to a reduced spectral broadening of the emission.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Publisher: Institute of Physics
ISSN: 0268-1242
Last Modified: 25 Oct 2022 08:30

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