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- W2981744912 abstract "We report InP-based room-temperature high-average-power quantum cascade lasers emitting at 14 μm. Using a novel active region design, a diagonal bound-to-bound lasing transition is guaranteed by efficient electron injection into the upper laser level and fast nonresonant electron extraction through a miniband from the lower laser level. For a 4 mm long and 40 μm wide double channel ridge waveguide laser with 55 stages of the active region, the threshold current density is only 3.13 kA/cm2 at room temperature. At 293 K, the maximum single-facet peak power and average power are up to 830 mW and 75 mW, respectively. The laser exhibits a characteristic temperature T0 of 395 K over a temperature range from 293 to 353 K." @default.
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- W2981744912 date "2019-10-24" @default.
- W2981744912 modified "2023-10-15" @default.
- W2981744912 title "14 μm quantum cascade lasers based on diagonal transition and nonresonant extraction" @default.
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- W2981744912 doi "https://doi.org/10.1364/prj.7.001244" @default.
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