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10 March 2016 Regrowth-free mid-infrared distributed feedback quantum cascade lasers with sub-watt power consumption
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Proceedings Volume 9767, Novel In-Plane Semiconductor Lasers XV; 97671S (2016) https://doi.org/10.1117/12.2213990
Event: SPIE OPTO, 2016, San Francisco, California, United States
Abstract
We report on room-temperature, continuous-wave operation of single-mode quantum cascade lasers designed for minimal threshold power consumption in the 4 to 10 μm spectral range. Narrow-ridge distributed feedback lasers were developed with plasma-etched sidewall corrugations and infrared-transparent dielectric cladding, enabling fabrication without any epitaxial steps beyond the initial growth of the planar laser wafer. The devices exhibit single-mode emission with stable, mode-hop-free tuning and side-mode suppression greater than 25 dB. We demonstrate packaged single-mode devices with continuous-wave threshold power consumption near 1 W above room temperature.
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Ryan M. Briggs, Clifford Frez, Mathieu Fradet, Siamak Forouhar, Romain Blanchard, and Christian Pflügl "Regrowth-free mid-infrared distributed feedback quantum cascade lasers with sub-watt power consumption", Proc. SPIE 9767, Novel In-Plane Semiconductor Lasers XV, 97671S (10 March 2016); https://doi.org/10.1117/12.2213990
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