Laser characteristics of an injection microdisk with quantum dots and its free-space outcoupling efficiency
- Russian Academy of Sciences, Saint Petersburg National Research Academic University (Russian Federation)
- Russian Academy of Sciences, Ioffe Physical–Technical Institute (Russian Federation)
The spectral, threshold, and power characteristics of a microdisk laser 31 μm in diameter with an active region based on InAs/InGaAs quantum dots, operating in the continuous-wave (cw) mode at room temperature are studied. The minimum threshold current density is 0.58 kA/cm{sup 2}, the subthreshold linewidth of the whispering-gallery mode is 50 pm at a wavelength lying in the range of 1.26–1.27 μm. The total power emitted into free space reaches ~0.1 mW in the cw mode, whereas the radiation power of the whispering-gallery modes is ~2.8%.
- OSTI ID:
- 22649681
- Journal Information:
- Semiconductors, Journal Name: Semiconductors Journal Issue: 10 Vol. 50; ISSN SMICES; ISSN 1063-7826
- Country of Publication:
- United States
- Language:
- English
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