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Stock image UAV drone monitoring gas near pipeline valves
Rugged, power-efficient and compact system based on TDLAS for remote sensing of multiple gases in challenging environments

LLNL researchers have developed a TDLAS-based, standalone, real-time gas analyzer in a small form-factor for continuous or single-point monitoring.  The system can analyze multiple gases with ultra-high sensitivity (ppm detection levels) in harsh conditions when utilizing wavelength-modulation spectroscopy (WMS). 

Schematic of 2P3C setup. Pump laser component is in red while probe laser component is denoted in blue.
Trace Gas Detection with 2P3C Ring-Down Spectroscopy

LLNL’s novel approach combines 2-color spectroscopy with CRDS, a combination not previously utilized.