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Modification of InGaAs/GaAs heterostructure density of states and optical gain using hybrid quantum well-dots
- Source :
- Laser Physics Letters. 17:095801
- Publication Year :
- 2020
- Publisher :
- IOP Publishing, 2020.
-
Abstract
- We show that the density of states and gain spectra of InGaAs/GaAs quantum well-dot (QWD) hybrid nanostructures qualitatively differ from that of quantum wells (QWs) and quantum dots. In QWDs, the density of states does not increase to higher energies and ground-state lasing is maintained up to shorter cavities (higher output loss) as compared to QW lasers emitting in the same optical range. The QWD lasers show lower threshold current densities and better temperature stability than the QW ones.
- Subjects :
- Materials science
Physics and Astronomy (miscellaneous)
Condensed Matter::Other
business.industry
Physics::Optics
Heterojunction
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
Laser
01 natural sciences
Semiconductor laser theory
law.invention
010309 optics
Quantum dot
law
0103 physical sciences
Density of states
Optoelectronics
010306 general physics
business
Instrumentation
Quantum
Lasing threshold
Quantum well
Subjects
Details
- ISSN :
- 1612202X and 16122011
- Volume :
- 17
- Database :
- OpenAIRE
- Journal :
- Laser Physics Letters
- Accession number :
- edsair.doi...........ad58a762c8c494067c2e0d39a7ee2101