High-performamce continuous wave quantum cascade lasers with widely spaced operation frequencies

A. Wittmann; L. Hvozdara; S. Blaser; M. Giovannini; J. Faist; D. Hofstetter; M. Beck; E. Gini

doi:10.1117/12.713734

23 February 2007 High-performamce continuous wave quantum cascade lasers with widely spaced operation frequencies

A. Wittmann, L. Hvozdara, S. Blaser, M. Giovannini, J. Faist, D. Hofstetter, M. Beck, E. Gini

Proceedings Volume 6485, Novel In-Plane Semiconductor Lasers VI; 64850P (2007) https://doi.org/10.1117/12.713734
Event: Integrated Optoelectronic Devices 2007, 2007, San Jose, California, United States

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.

Citation Download Citation

A. Wittmann, L. Hvozdara, S. Blaser, M. Giovannini, J. Faist, D. Hofstetter, M. Beck, and E. Gini "High-performamce continuous wave quantum cascade lasers with widely spaced operation frequencies", Proc. SPIE 6485, Novel In-Plane Semiconductor Lasers VI, 64850P (23 February 2007); https://doi.org/10.1117/12.713734

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