Spectral dependence of the linewidth enhancement factor in quantum dot lasers
- Russian Academy of Sciences, Ioffe Physical-Technical Institute (Russian Federation)
- Russian Academy of Sciences, St. Petersburg Academic University-Nanotechnology Research and Education Center (Russian Federation)
- Innolume GmbH (Germany)
The spectral analysis of amplified spontaneous emission is used to determine the linewidth enhancement factor (α-factor) in lasers based on InAs/InGaAs quantum dots (QDs) in a wide spectral range near the ground-state optical transition energy. The effect of the pump current and number of QDs on the spectral dependences of the α-factor is examined. The temperature dependence of the spectra of the α-factor is experimentally determined for the first time for lasers with InAs/InGaAs QDs. An explanation is suggested for the observed anomalous decrease in the α-factor with increasing temperature.
- OSTI ID:
- 22300415
- Journal Information:
- Semiconductors, Journal Name: Semiconductors Journal Issue: 12 Vol. 47; ISSN SMICES; ISSN 1063-7826
- Country of Publication:
- United States
- Language:
- English
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