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- W2068573766 abstract "A mid-infrared vertical external cavity surface emitting laser (VECSEL) based on undoped PbS is described herein. A 200 nm-thick PbS active layer embedded between PbSrS cladding layers forms a double heterostructure. The layers are grown on a lattice and thermal expansion mismatched Si-substrate. The substrate is placed onto a flat bottom Bragg mirror again grown on a Si substrate, and the VECSEL is completed with a curved top mirror. Pumping is done optically with a 1.55 μm laser diode. This leads to an extremely simple modular fabrication process. Lasing wavelengths range from 3–3.8 μm at 100–260 K heat sink temperature. The lowest threshold power is ∼210 mWp and highest output power is ∼250 mWp. The influence of the different recombination mechanism as well as free carrier absorption on the threshold power is modeled." @default.
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- W2068573766 date "2011-07-15" @default.
- W2068573766 modified "2023-10-03" @default.
- W2068573766 title "Modular PbSrS/PbS mid-infrared vertical external cavity surface emitting laser on Si" @default.
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- W2068573766 doi "https://doi.org/10.1063/1.3610407" @default.
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