Two-well quantum cascade laser optimization by non-equilibrium Green's function modelling
Research output: Contribution to journal › Article
We present a two-quantum well THz intersubband laser operating up to 192 K. The structure has been optimized using non-equilibrium Green's function model. The result of this optimization was confirmed experimentally by growing, processing, and measuring a number of proposed designs. At high temperature (T > 200 K), the simulations indicate that lasing fails due to a combination of electron-electron scattering, thermal backfilling, and, most importantly, re-absorption coming from broadened states.
|Research areas and keywords||
Subject classification (UKÄ) – MANDATORY
|Journal||Applied Physics Letters|
|Publication status||Published - 2018 Jan 8|