Temperature Dependence and Screening Models in Quantum Cascade Structure

Abstract

Different screening models in quantum cascade lasers are compared by calculating the contribution of intra-subband impurity scattering to the optical linewidth as a function of temperature. We find a strong impact of impurity scattering which is increasing substantially with temperature. A simple isotropic bulk screening model works well if the screening length is of the order or longer than the period length of the cascade structure.

7 pages, 9 figures

References in corpus (2)

• Self-Consistent Theory of the Gain Linewidth for Quantum Cascade Lasers
• Temperature dependence of the gain profile for THz quantum cascade lasers

Cited by in corpus (6)

• Modeling techniques for quantum cascade lasers
• Electron transport in quantum wire superlattices
• Contrasting influence of charged impurities on transport and gain in terahertz quantum cascade lasers
• Optoelectronic device simulations based on macroscopic Maxwell-Bloch equations
• Density matrix Monte Carlo modeling of quantum cascade lasers
• Density Matrix Modeling of Quantum Cascade Lasers without an Artificially Localized Basis: A Generalized Scattering Approach