Mid-infrared optical fiber Fourier transform infrared spectrometer

Kenneth J. Ewing; L. Brandon Shaw; Rick Kim; Rafael R. Gattass; Jas Sanghera; Ish Aggarwal

doi:10.1117/12.883529

3 June 2011 Mid-infrared optical fiber Fourier transform infrared spectrometer

Kenneth J. Ewing, L. Brandon Shaw, Rick Kim, Rafael R. Gattass, Jas Sanghera, Ish Aggarwal

Proceedings Volume 8018, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XII; 80180U (2011) https://doi.org/10.1117/12.883529
Event: SPIE Defense, Security, and Sensing, 2011, Orlando, Florida, United States

Abstract

The need for small, robust, and highly selective sensors, for both military and homeland security requirements, is driving the development of portable detectors for hazardous materials. Infrared spectroscopy exhibits high selectivity because the infrared vibrational transitions correlate to the molecular structure and functional groups within the molecule. Small FTIR systems exist as COTS items; however, these systems still require precise moving components to generate the interferogram. A more desirable approach is to build a solid state system with no precision moving parts as required by a typical moving mirror interferometer. This work will describe the design aspects of an optical fiber based mid-infrared FTIR, and focus specifically on the stateof- the-art mid-infrared transmitting optical fibers and the use of an optical fiber supercontinuum source for efficient coupling of light into the system.

Citation Download Citation

Kenneth J. Ewing, L. Brandon Shaw, Rick Kim, Rafael R. Gattass, Jas Sanghera, and Ish Aggarwal "Mid-infrared optical fiber Fourier transform infrared spectrometer", Proc. SPIE 8018, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XII, 80180U (3 June 2011); https://doi.org/10.1117/12.883529

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