Mid-IR quantum cascade laser mode coupling in hollow-core, fiber-optic waveguides with single-mode beam delivery

P. Patimisco; A. Sampaolo; J. M. Kriesel; G. Scamarcio; V. Spagnolo

doi:10.1117/12.2078960

8 February 2015 Mid-IR quantum cascade laser mode coupling in hollow-core, fiber-optic waveguides with single-mode beam delivery

P. Patimisco, A. Sampaolo, J. M. Kriesel, G. Scamarcio, V. Spagnolo

Author Affiliations +

Proceedings Volume 9370, Quantum Sensing and Nanophotonic Devices XII; 937016 (2015) https://doi.org/10.1117/12.2078960
Event: SPIE OPTO, 2015, San Francisco, California, United States

Abstract

We report a theoretical and experimental study of laser coupling in hollow-core, fiber-optic waveguides with small-bore diameters of d=200 μm. For the experiments we utilized three mid-infrared quantum cascade lasers with different emission wavelength, which were coupled into the waveguides using lenses with focal lengths in the range 25-76 mm. Measurements of the output beam profiles and propagation losses were obtained as a function of the coupling conditions. With appropriate coupling parameters, single mode beam delivery can be obtained for all laser wavelengths, ranging from λ ~ 5.4 to 10.5 μm.

Citation Download Citation

P. Patimisco, A. Sampaolo, J. M. Kriesel, G. Scamarcio, and V. Spagnolo "Mid-IR quantum cascade laser mode coupling in hollow-core, fiber-optic waveguides with single-mode beam delivery", Proc. SPIE 9370, Quantum Sensing and Nanophotonic Devices XII, 937016 (8 February 2015); https://doi.org/10.1117/12.2078960

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