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Conferences > CLEO_Europe > 1998 > CWF > CWF97

Comparison of FT-IR and Diode Laser Based Absorption Spectroscopy for Trace Gas Monitoring

W. Chen, D. Moinet, and F. Tittel

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Abstract

This work describes a comparison of the performance characteristics between a conventional Fourier transform infrared (FT-IR) and new mid-infrared gas sensors based on diode laser pumped difference frequency generation (DFG) in periodically poled lithium niobate (PPLN) at wavelengths between 3 to 5 microns. Minimum detectable concentrations of trace gases in air at sub ppm levels were obtained using this type of diode laser absorption spectroscopy [1].

© 1998 IEEE

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