Hollow Waveguide Gas Sensor for Mid-Infrared Trace Gas Analysis

Conference · Thu Jul 12 00:00:00 EDT 2007

DOI:https://doi.org/10.1109/ICSENS.2007.4388640· OSTI ID:920855

Kim, S; Young, C; Chan, J; Carter, C; Mizaikoff, B

A hollow waveguide mid-infrared gas sensor operating from 1000 cm{sup -1} to 4000 cm{sup -1} has been developed, optimized, and its performance characterized by combining a FT-IR spectrometer with Ag/Ag-halide hollow core optical fibers. The hollow core waveguide simultaneously serves as a light guide and miniature gas cell. CH{sub 4} was used as test analyte during exponential dilution experiments for accurate determination of the achievable limit of detection (LOD). It is shown that the optimized integration of an optical gas sensor module with FT-IR spectroscopy provides trace sensitivity at the few hundreds of parts-per-billion concentration range (ppb, v/v) for CH{sub 4}.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 920855
• Report Number(s): UCRL-PROC-233227; TRN: US200805%%206
• Resource Relation: Conference: Presented at: IEEE Sensors 2007, Atlanta, GA, United States, Oct 28 - Oct 31, 2007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUMM MECHANICS
GENERAL PHYSICS
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
42 ENGINEERING
DETECTION
DILUTION
GAS ANALYSIS
OPTICAL FIBERS
PERFORMANCE
SENSITIVITY
SPECTROMETERS
SPECTROSCOPY
WAVEGUIDES