Compact TDLAS based sensor design using interband cascade lasers for mid-IR trace gas sensing

Abstract

Two compact TDLAS sensor systems based on different structural optical cores were developed. The two optical cores combine two recent developments, gallium antimonide (GaSb)-based ICL and a compact multipass gas cell (MPGC) with the goal to create compact TDLAS based sensors for the mid-IR gas detection with high detection sensitivity and low power consumption. The sensors achieved minimum detection limits of ~5 ppbv and ~8 ppbv, respectively, for CH4 and C2H6 concentration measurements with a 3.7-W power consumption.

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Dong, Lei, Tittel, Frank K., Li, Chunguang, et al.. "Compact TDLAS based sensor design using interband cascade lasers for mid-IR trace gas sensing." Optics Express, 24, no. 6 (2016) The Optical Society: A528-A535. http://dx.doi.org/10.1364/OE.24.00A528.

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