Abstract
The screening effects on the band-gap renormalization (BGR) of strained InGaAs/InGaAsP (Eg=1.6 eV) QW lasers lattice matched to GaAs are investigated theoretically, taking into account the valence-band mixing and multisubband effects. These results are also compared with those of InGaAs/GaAs QW lasers. Without the screening effect, the BGR significantly depends on both the carrier density and the In composition. On the other hand, with the screening effect, these dependencies are expected to be reduced considerably. The BGR with the screening effect in InGaAs/GaAs lasers show weaker dependence on the In composition compared to InGaAs/InGaAsP lasers.
Original language | English |
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Pages (from-to) | 1844 |
Number of pages | 1 |
Journal | Applied Physics Letters |
State | Published - 1995 |