Quantum cascade laser. Developed for specialist producers looking for a powerful and fuel-efficient tractor, the new series combines excellent cab comfort and straightforward operation with a new flagship model expanding the range up to hp. B 76 , Package Back. IEEE Trans. Scalari, G. They discovered that the linear and quadratic coefficients have opposing impact on the potential for QWs, and that the quadratic term prevails for large strain. Article Google Scholar Enders, P. Such lasers were predicted to benefit from the inherently narrow gain spectrum, reduced electron—phonon relaxation phonon bottleneck , and free-carrier absorption of QDs, significantly enhancing carrier lifetimes 96 , 97 , 98 and thus improving temperature stability with significantly reduced threshold current densities 95 , 99 , , For any geometry 16 and composition, all important aspects such like confinement, strain, piezo- and pyroelectricity, band-coupling, and -splitting may be faithfully addressed.