Pulsed operation of long-wavelength (λ≃11.3 µm) MOVPE-grown quantum cascade lasers up to 350 K

Pulsed laser action above room temperature at λ≃11.3 µm has been achieved in quantum cascade devices grown by metal organic vapour phase epitaxy (MOVPE). The emission wavelength (λ≃11.3 µm) is the longest reported for QC lasers grown with this technique. The peak output power at 77 K is approximately 315 mW, decreasing to ≃100 mW at room temperature. The devices display laser operation up to at least 350 K.