22 January 2010 Low-power laser-based carbon monoxide sensor for fire and post-fire detection using a compact Herriott multipass cell
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Abstract
With the anticipated retirement of Space Shuttles in the next few years, the re-supplying of short-lifetime sensors on the International Space Station (ISS) will be logistically more difficult. Carbon Monoxide (CO) is a well-known combustion product and its absence in a fire and post-fire environment is a reliable indicator for mission specialists that the air quality is at a safe to breathe level. We report on the development and performance of a prototype compact CO sensor, based on the PHOTONS platform [1], developed for the ISS based on tunable diode laser absorption spectroscopy (TDLAS). A CO absorption line at ~4285 cm-1 is targeted using a distributed-feedback (DFB) laser diode operating at room temperature. A custom designed Herriott multipass cell 16cm long, with an effective path length of 3.7 m is employed. Mechanical, optical and electronics systems are integrated into a compact package of dimensions measuring 12.4"x 3.4"x 5". Power consumption is less than 1 W, enabling prolonged battery life. A detection limit of 3 ppm is achieved when performing 40 second long temperature scans. A recent initial test at NASA-JSC was successful. Future improvements include the reduction of the sampling volume, scan time and an improved CO minimum detection limit.
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David Thomazy, David Thomazy, Stephen So, Stephen So, Anatoliy Kosterev, Anatoliy Kosterev, Rafal Lewicki, Rafal Lewicki, Lei Dong, Lei Dong, Ardalan A. Sani, Ardalan A. Sani, Frank K. Tittel, Frank K. Tittel, } "Low-power laser-based carbon monoxide sensor for fire and post-fire detection using a compact Herriott multipass cell", Proc. SPIE 7608, Quantum Sensing and Nanophotonic Devices VII, 76080C (22 January 2010); doi: 10.1117/12.841926; https://doi.org/10.1117/12.841926
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