Design and Simulation of THz Quantum Cascade Lasers

Abstract

Strategies and concepts for the design of THz emitters based on the quantum cascade scheme are analyzed and modeled in terms of a fully three-dimensional Monte Carlo approach; this allows for a proper inclusion of both carrier-carrier and carrier-phonon scattering mechanisms. Starting from the simulation of previously published far-infrared emitters, where no population inversion is achieved, two innovative designs are proposed. The first one follows the well-established chirped-superlattice scheme whereas the second one employs a double-quantum well superlattice to allow energy relaxation through optical phonon emission. For both cases a significant population inversion is predicted at temperatures up to 80 K.

4 pages, 2 figures, 2 tables

References in corpus (1)

• On the Nature of Charge Transport in Quantum-Cascade Lasers

Cited by in corpus (6)

• Modeling techniques for quantum cascade lasers
• Monte Carlo study of carrier-light coupling in terahertz quantum cascade lasers
• Density matrix Monte Carlo modeling of quantum cascade lasers
• Photon-induced carrier transport in high efficiency midinfrared quantum cascade lasers
• Modeling bound-to-continuum terahertz quantum cascade lasers: The role of Coulomb interactions
• Quantum simulating the electron transport in quantum cascade laser structures