title: Efficient method for the calculation of dissipative quantum transport in quantum cascade lasers.
abstract: We present a novel and very efficient method for calculating quantum transport in quantum cascade lasers (QCLs). It follows the nonequilibrium Green's function (NEGF) framework but sidesteps the calculation of lesser self-energies by replacing them by a quasi-equilibrium expression. This method generalizes the phenomenological Büttiker probe model by taking into account individual scattering mechanisms. It is orders of magnitude more efficient than a fully self-consistent NEGF calculation for realistic devices. We apply this method to a new THz QCL design which works up to 250 K - according to our calculations.
authors.forename: Peter
authors.initials: P
authors.lastname: Greck
authors.forename: Stefan
authors.initials: S
authors.lastname: Birner
authors.forename: Bernhard
authors.initials: B
authors.lastname: Huber
authors.forename: Peter
authors.initials: P
authors.lastname: Vogl