Temperature effects in terahertz step well quantum cascade structures with diagonal optical transition
MetadataShow full item record
Temperature effects in terahertz (THz) step well quantum cascade (QC) structures are investigated. Step well QC structures with diagonal optical transitions that use fast intrawell electron-longitudinal optical (LO) phonon scattering for depopulation are considered. A density matrix method is used to model the electron transport coherence and is incorporated into the Monte Carlo simulations of these structures. A phenomenological dephasing time is also included. The influence of the lattice temperature on the population inversion is modeled and the effects due to gain spectral broadening are also considered. Optical gain greater than typical waveguide resonator thresholds are estimated out to T ∼ 200 K.
The article of record as published may be found at http://dx.doi.org/10.1117/12.894223
RightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
Showing items related by title, author, creator and subject.
Numerical study of effects of fluid-structure interaction on dynamic responses of composite plates Kendall, Peter K. (Monterey, California. Naval Postgraduate School, 2009);Composite materials are seeing increased use in structural applications because of their various benefits. When composite structures are employed in a water environment, their dynamic responses are greatly affected by the ...
Carey, Agustin E. (Monterey, California. Naval Postgraduate School, 2002);Damping in structures has historically been of great importance in nearly all branches of engineering endeavors, and it also happens to be one of the most difficult parameters to predict. The purpose of this research is ...
Bowling, J.D.; Kwon, Y.W. (Springer, 2018);Dynamic loading can be transferred from one structure to another via fluid media with fluid–structure interaction (FSI). Previous studies demonstrated that FSI played a critical role for polymer composite structures in ...