Two-well quantum cascade laser optimization by non-equilibrium Green's function modelling
نویسندگان
چکیده
منابع مشابه
Comparative analysis of quantum cascade laser modeling based on density matrices and non-equilibrium Green's functions
متن کامل
Non equilibrium electrons and phonons in quantum-cascade lasers
The electron-phonon interaction is the dominant process that controls the energy relaxation of carriers, in semiconductors and related heterostructures. If the excess energy of the electron ensemble is sufficiently high, the process of electron cooling may generate significant nonequilibrium electron and optical-phonon populations which may cause substantial changes in the carrier relaxation ki...
متن کاملDesign Optimization for 4.1-THZ Quantum Cascade Lasers
We present an optimized design for GaAs/AlGaAs quantum cascade lasers operating at 4.1THz. This was based on a three-well active module with diagonal radiative transition. This was performed by modifying the existing model structure, to reduce the parasitic anticrossings (leakage currents) as well as the optical gain linewidth. While the gain FWHM was reduced by more than 50% the gain pea...
متن کاملQuantum dot cascade laser
UNLABELLED We demonstrated an unambiguous quantum dot cascade laser based on InGaAs/GaAs/InAs/InAlAs heterostructure by making use of self-assembled quantum dots in the Stranski-Krastanow growth mode and two-step strain compensation active region design. The prototype generates stimulated emission at λ ~ 6.15 μm and a broad electroluminescence band with full width at half maximum over 3 μm. The...
متن کاملQuantum cascade laser technology
In the mid-infrared spectral region, where continuous wave room temperature operation of the QCL devices was achieved in the previous phase of the program, the main goal will be to further broaden the frequency range over which these high performances are achieved. Another important topic is the fabrication of devices with a very large frequency tuning capability, which will enable the spectros...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Applied Physics Letters
سال: 2018
ISSN: 0003-6951,1077-3118
DOI: 10.1063/1.5004640