Continuous wave room temperature external ring cavity quantum cascade laser

An external ring cavity quantum cascade laser operating at ∼5.2 μm wavelength in a continuous-wave regime at the temperature of 15 °C is demonstrated. Out-coupled continuous-wave optical powers of up to 23 mW are observed for light of one propagation direction with an estimated total intra-cavity op...

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Veröffentlicht in:Applied physics letters 2015-06, Vol.106 (26)
Hauptverfasser: Revin, D. G., Hemingway, M., Vaitiekus, D., Cockburn, J. W., Hempler, N., Maker, G. T., Malcolm, G. P. A.
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Sprache:eng
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Zusammenfassung:An external ring cavity quantum cascade laser operating at ∼5.2 μm wavelength in a continuous-wave regime at the temperature of 15 °C is demonstrated. Out-coupled continuous-wave optical powers of up to 23 mW are observed for light of one propagation direction with an estimated total intra-cavity optical power flux in excess of 340 mW. The uni-directional regime characterized by the intensity ratio of more than 60 for the light propagating in the opposite directions was achieved. A single emission peak wavelength tuning range of 90 cm−1 is realized by the incorporation of a diffraction grating into the cavity.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4923243