Open AccessMonte Carlo study of intrinsic linewidths in terahertz quantum cascade lasers
Author(s) -
Christian Jirauschek
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.025922
Subject(s) - laser linewidth , terahertz radiation , cascade , quantum cascade laser , optics , laser , monte carlo method , photon , optoelectronics , photomixing , physics , terahertz spectroscopy and technology , materials science , far infrared laser , chemistry , terahertz metamaterials , statistics , mathematics , chromatography
Based on a coupled simulation of carrier transport and optical cavity field, the intrinsic linewidth in resonant phonon terahertz quantum cascade lasers is self-consistently analyzed. For high power structures, values on the order of Hz are obtained. Thermal photons are found to play a considerable role at elevated temperatures. A linewidth enhancement factor of 0.5 is calculated for the investigated designs.