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- W2788538773 abstract "We theoretically study the performance of terahertz quantum cascade lasers (THz-QCLs) with GaSb wells and InxGa1−xSb wells. The results of rate-equation calculations reveal that the intervalley scattering of electrons from the Γ valley to the L valley in GaSb degrades the performance of the GaSb-based THz-QCLs at high temperatures. We propose the use of InxGa1−xSb (x ≥ 0.25) quantum wells to reduce the intervalley scattering. Our calculations using the nonequilibrium Green’s function method including alloy disorder scattering show that the THz-QCLs with InGaSb wells have higher gain than the GaAs-based THz-QCLs at high temperatures." @default.
- W2788538773 created "2018-03-06" @default.
- W2788538773 creator A5028501439 @default.
- W2788538773 date "2018-02-01" @default.
- W2788538773 modified "2023-09-27" @default.
- W2788538773 title "Intervalley scattering in terahertz quantum cascade lasers with GaSb and InGaSb wells" @default.
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- W2788538773 doi "https://doi.org/10.1063/1.5023404" @default.
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