Midinfrared lead salt multi‐quantum‐well diode lasers with 282 K operation

IV‐VI multiple‐quantum‐well lasers with seven wells made from molecular‐beam‐epitaxy grown PbSe/PbSrSe have been operated in pulsed mode up to 282 K at a wavelength of λ=4.2 μm. This is the highest midinfrared quantum well laser operation temperature observed to date.