Hollow waveguides for the transmission of quantum cascade laser (QCL) energy for spectroscopic applications

James A. Harrington; Carlos M. Bledt; Jason M. Kriesel

doi:10.1117/12.881548

16 February 2011 Hollow waveguides for the transmission of quantum cascade laser (QCL) energy for spectroscopic applications

James A. Harrington, Carlos M. Bledt, Jason M. Kriesel

Author Affiliations +

Proceedings Volume 7894, Optical Fibers, Sensors, and Devices for Biomedical Diagnostics and Treatment XI; 789414 (2011) https://doi.org/10.1117/12.881548
Event: SPIE BiOS, 2011, San Francisco, California, United States

Abstract

Spectroscopy in the long-wave infrared (LWIR) wavelength region (8 to 12 μm) is useful for detecting trace chemical compounds, such as those indicative of weapons of mass destruction (WMD). To enable the development of field portable systems for anti-proliferation efforts, current spectroscopy systems need to be made more robust, convenient, and practical (e.g., miniaturized). Hollow glass waveguides have been used with a Quantum Cascade Laser source for the delivery of single-mode laser radiation from 9 to 10 μm. The lowest loss measured for a straight, 484 μm-bore guide was 0.44 dB/m at 10 μm. The smallest 300 μm-bore waveguide transmitted singlemode radiation even while bent to radii less than 30 cm.

Citation Download Citation

James A. Harrington, Carlos M. Bledt, and Jason M. Kriesel "Hollow waveguides for the transmission of quantum cascade laser (QCL) energy for spectroscopic applications", Proc. SPIE 7894, Optical Fibers, Sensors, and Devices for Biomedical Diagnostics and Treatment XI, 789414 (16 February 2011); https://doi.org/10.1117/12.881548

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