Tapered 47 μm quantum cascade lasers with highly strained active region composition delivering over 45 watts of continuous wave optical power

Room temperature quantum cascade lasers with 27% wall plug efficiency

(2011) Y. Bai et al.   APPLIED PHYSICS LETTERS

λ~71 μm quantum cascade lasers with 19% wall-plug efficiency at room temperature

(2011) Richard Maulini et al.   OPTICS EXPRESS

Quantum cascade laser master-oscillator power-amplifier with 15 W output power at 300 K

(2011) Stefan Menzel et al.   OPTICS EXPRESS

Temperature dependence of the key electro-optical characteristics for midinfrared emitting quantum cascade lasers

(2010) D. Botez et al.   APPLIED PHYSICS LETTERS

Small-divergence singlemode emitting tapered distributed-feedback quantum cascade lasers

(2010) W. Zhang et al.   ELECTRONICS LETTERS

3 W continuous-wave room temperature single-facet emission from quantum cascade lasers based on nonresonant extraction design approach

(2009) A. Lyakh et al.   APPLIED PHYSICS LETTERS

Intersubband linewidths in quantum cascade laser designs

(2008) A. Wittmann et al.   APPLIED PHYSICS LETTERS