Open AccessMonte Carlo analysis of the terahertz difference frequency generation susceptibility in quantum cascade laser structures
Author(s) -
Christian Jirauschek,
Hesham Okeil,
Paolo Lugli
Publication year - 2015
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.23.001670
Subject(s) - terahertz radiation , cascade , monte carlo method , terahertz spectroscopy and technology , optics , physics , laser , photomixing , quantum cascade laser , nonlinear system , nonlinear optics , far infrared laser , optoelectronics , materials science , terahertz metamaterials , quantum mechanics , chemistry , statistics , mathematics , chromatography
Based on self-consistent ensemble Monte Carlo simulations coupled to the optical field dynamics, we investigate the giant nonlinear susceptibility giving rise to terahertz difference frequency generation in quantum cascade laser structures. Specifically, the dependence on temperature, bias voltage and frequency is considered. It is shown that the optical nonlinearity is temperature insensitive and covers a broad spectral range, as required for widely tunable room temperature terahertz sources. The obtained results are consistent with available experimental data.