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Proceedings Paper

Advances in handheld FT-IR instrumentation
Author(s): Josep Arnó; Len Cardillo; Kevin Judge; Maxim Frayer; Michael Frunzi; Paul Hetherington; Dustin Levy; Kyle Oberndorfer; Walter Perec; Terry Sauer; John Stein; Eric Zuidema
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Paper Abstract

FT-IR spectroscopy is the technology of choice to identify solid and liquid phase unknown samples. The challenges of ConOps (Concepts of Operation) in emergency response and military field applications require a significant redesign of the stationary FT-IR bench-top instruments typically used in laboratories. Specifically, field portable units require high levels of resistance against mechanical shock and chemical attack, ease of use in restrictive gear, quick and easy interpretation of results, and reduced size. In the last 20 years, FT-IR instruments have been re-engineered to fit in small suitcases for field portable use and recently further miniaturized for handheld operation. This article introduces the advances resulting from a project designed to overcome the challenges associated with miniaturizing FT-IR instruments. The project team developed a disturbance-corrected permanently aligned cube corner interferometer for improved robustness and optimized opto-mechanical design to maximize optical throughput and signal-to-noise ratios. Thermal management and heat flow were thoroughly modeled and studied to isolate sensitive components from heat sources and provide the widest temperature operation range. Similarly, extensive research on mechanical designs and compensation techniques to protect against shock and vibration will be discussed. A user interface was carefully created for military and emergency response applications to provide actionable information in a visual, intuitive format. Similar to the HazMatID family of products, state-of-the-art algorithms were used to quickly identify the chemical composition of complex samples based on the spectral information. This article includes an overview of the design considerations, tests results, and performance validation of the mechanical ruggedness, spectral, and thermal performance.

Paper Details

Date Published: 17 May 2012
PDF: 10 pages
Proc. SPIE 8374, Next-Generation Spectroscopic Technologies V, 837406 (17 May 2012); doi: 10.1117/12.921052
Show Author Affiliations
Josep Arnó, Smiths Detection (United States)
Len Cardillo, Smiths Detection (United States)
Kevin Judge, Smiths Detection (United States)
Maxim Frayer, Smiths Detection (United States)
Michael Frunzi, Smiths Detection (United States)
Paul Hetherington, Smiths Detection (United States)
Dustin Levy, Smiths Detection (United States)
Kyle Oberndorfer, Smiths Detection (United States)
Walter Perec, Smiths Detection (United States)
Terry Sauer, Smiths Detection (United States)
John Stein, Smiths Detection (United States)
Eric Zuidema, Smiths Detection (United States)

Published in SPIE Proceedings Vol. 8374:
Next-Generation Spectroscopic Technologies V
Mark A. Druy; Richard A. Crocombe, Editor(s)

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