Summers, Huw David, Thomson, John Duncan, Smowton, Peter Michael, Blood, Peter and Hopkinson, M. 2001. Thermodynamic balance in quantum dot lasers. Semiconductor Science and Technology 16 (3) , pp. 140-143. 10.1088/0268-1242/16/3/303 |
Abstract
The spontaneous emission and optical gain spectra from an InGaAs quantum dot laser have been independently measured under the same operating conditions. Using these spectra a combined probability-distribution function describing the electron occupancy in the conduction and valence bands has been experimentally determined. Comparison of this function with theoretical curves based on Fermi-Dirac statistics shows that for temperatures down to 100 K the carrier occupancy statistics are accurately described by thermal distributions. Measurements at 70 K show a breakdown of thermodynamic equilibrium indicated by non-thermal carrier distributions.
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Physics and Astronomy |
Uncontrolled Keywords: | Optics; quantum optics; lasers |
ISSN: | 0268-1242 |
Last Modified: | 04 Jun 2017 01:40 |
URI: | http://orca.cf.ac.uk/id/eprint/1536 |
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