Answers are grounded in this paper and cite their sources.
Continuous wave optically pumped mid-infrared lead-salt quantum-well vertical-cavity surface-emitting lasers with an eleven-period PbSe/PbSrSe quantum-well active region are demonstrated. The cw emissions are observed up to 230 K at the emission wavelengths around 4.03 μm. The lowest threshold pump density of 2.6 kW/cm2 appears at 190 K, 65 °C lower than that of the pulsed measurements. This indicates the temperature difference between the active region and the heat sink of the episide-up mounted on-wafer testing under cw pumping.
No takes yet. Share an insight, caveat, or question.
Zhao et al. (2003) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: