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- W2027389329 abstract "Room temperature, continuous wave (CW) operation of distributed feedback (DFB) quantum cascade lasers with widely spaced operation frequencies is reported. The relatively small temperature tuning range of a single device, smaller or equal to approximately 1 % of the wavelength, usually limits their efficiency for spectroscopic investigations. By using a bound-to-continuum active region to create a broad gain spectrum and monolithic integration of different DFB gratings, we achieved high-performance devices with single-mode emission between 7.7 and 8.3 &mgr;m at a temperature of +30 °C. This frequency span corresponds to 8 % of the center frequency. The maximum CW operation temperature achieved was 63 °C at the gain center and as much as 35 °C and 45 °C, respectively, at the limits of the explored wavelength range." @default.
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- W2027389329 date "2007-02-08" @default.
- W2027389329 modified "2023-09-30" @default.
- W2027389329 title "High-performamce continuous wave quantum cascade lasers with widely spaced operation frequencies" @default.
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- W2027389329 doi "https://doi.org/10.1117/12.713734" @default.
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