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- 2016 (2)
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- Englisch (2)
Schlagworte
- Fourier-transform spectroscopy (1)
- GaAsSb (1)
- Interband cascade lasers (1)
- Localized states (1)
- MU-M (1)
- Mid-infrared photoluminescence (1)
- Quantum wells (1)
- Type II quantum wells (1)
- Type-II quantum well (1)
- interband cascade laser (1)
- modulation spectroscopy (1)
- semiconductors (1)
Institut
EU-Projektnummer / Contract (GA) number
- 636930 (1)
Optical properties of modified type II W-shaped quantum wells have been investigated with the aim to be utilized in interband cascade lasers. The results show that introducing a tensely strained GaAsSb layer, instead of a commonly used compressively strained GaInSb, allows employing the active transition involving valence band states with a significant admixture of the light holes. Theoretical predictions of multiband k.p theory have been experimentally verified by using photoluminescence and polarization dependent photoreflectance measurements. These results open a pathway for practical realization of mid-infrared lasing devices with uncommon polarization properties including, for instance, polarization-independent midinfrared light emitters.