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- W2090551116 abstract "We demonstrate cw output powers >290 mW into a nearly diffraction-limited (M² ≈2.2) output beam from an interband cascade laser operating at λ = 3.6-3.7 μm at room temperature. The interband cascade laser was designed for nearly equal electron and hole populations in the active region with heavy electron-injector doping, and was processed into narrow ridges mounted epitaxial side down on a copper heat sink. A 15.7-μm-wide, 4-mm-long ridge with the back facet coated for high reflection (HR) and an anti-reflection-coated front facet produced 253 mW of cw output power at T = 25°C into a beam with M² ≈2.7. Furthermore, corrugating the sidewalls of the ridge leads to a 20% improvement in the brightness. A 15.7-μm-wide, 0.5-mm-long ridge with an HR-coated back facet and an uncoated front facet exhibited a maximum cw wall-plug efficiency of nearly 15% at room temperature." @default.
- W2090551116 created "2016-06-24" @default.
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- W2090551116 date "2012-08-28" @default.
- W2090551116 modified "2023-10-10" @default.
- W2090551116 title "High-power room-temperature continuous-wave mid-infrared interband cascade lasers" @default.
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- W2090551116 doi "https://doi.org/10.1364/oe.20.020894" @default.
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