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High-power spatial singlemode quantum cascade lasers at 8.9 µm

High-power spatial singlemode quantum cascade lasers at 8.9 µm

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High performance of InP-based quantum cascade lasers emitting at λ≃9 µm is reported. A thick electroplated gold layer was deposited on top of the laser to improve heat dissipation. Devices with one facet high reflection coated produce a maximum output power of 175 mW at 40% duty cycle at room temperature and continuous-wave operation up to 278 K.

References

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      • J. Faist , C. Sirtori , H.K. Choi . (2004) InP and GaAs-based quantum cascade lasers, Long wavelength infrared semiconductor lasers.
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      • A.A. Kosterev , R.F. Curl , F.K. Tittel , C. Gmachl , F. Capasso , D.L. Sivco , J.N. Baillargeon , A.L. Hutchinson , A.Y. Cho . Methane concentration and isotopic composition measurements with a mid-infrared quantum-cascade laser. Opt. Lett.
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