Carrier-phonon interactions in 1.3-μm quaternary In0.72Ga0.28As0.6 P0.4

Abstract
Optically induced hot carriers in In0.72Ga0.28As0.6 P0.4 are measured using photoluminescence techniques and interpreted in terms of a polar‐optical‐phonon‐scattering model with four phonons. We show that the combined effect of these phonons can be well represented using a single effective phonon energy for a wide temperature range, e.g., ℏωeff =31.6 meV for carrier temperatures between 35 and 160 K. This observation should greatly simplify the inclusion of multiphonon scattering in future calculations for this quaternary alloy material.