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Two-well quantum cascade laser optimization by non-equilibrium Green's function modelling
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DOI：10.1063/1.5004640.png)
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Abstract
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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. Published by AIP Publishing.
Keywords:
ELECTRON-ELECTRON SCATTERING
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