Abstract
Nitric oxide detection with Faraday rotation spectroscopy offers excellent sensitivity and high specificity together with outstanding long term system performance. Development of a transportable, cryogen-free, prototype field instrument based on mode-hop-free external cavity quantum cascade laser targeting the optimum NO Q(3/2) transition at 1875.8 cm-1 is reported . The system shows a minimum detection limit of 5.4 ppb with a lsec. lock-in time constant. Continuous, unattended NO monitoring with >1 hour white noise limited averaging times is reported.
| Original language | English (US) |
|---|---|
| Article number | 72220M |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 7222 |
| DOIs | |
| State | Published - 2009 |
| Event | Quantum Sensing and Nanophotonic Devices VI - San Jose, CA, United States Duration: Jan 25 2009 → Jan 28 2009 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering
Keywords
- Faraday effect
- Nitric oxide
- Quantum cascade laser; laser spectroscopy
- Trace-gas detection
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