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- W2890140446 abstract "A quantum cascade laser emitting at λ∼8.5 μm based on the excited-state injection is presented. The operating voltage is reduced for a low-voltage defect in the excited-state design, compared with the conventional ground-state injection design. The threshold voltage and voltage defect are as low as 6.3 V and 54 mV for a 30-stage active region, respectively. Devices were fabricated through standard buried-heterostructure processing to decrease the heat accumulation. A continuous-wave optical power of 340 mW is obtained at 283 K with a threshold current density of 2.7 kA/cm2. Such a design has the potential to further improve the wall plug efficiency for increased voltage efficiency." @default.
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- W2890140446 date "2018-09-10" @default.
- W2890140446 modified "2023-10-17" @default.
- W2890140446 title "Low voltage-defect quantum cascade lasers based on excited-states injection at λ ∼ 85 μm" @default.
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- W2890140446 doi "https://doi.org/10.1364/ao.57.007579" @default.
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