Laser Sensors

Laser Diagnostics


Our group focuses on the development of a wide range of sensors that employ tunable diode lasers, quantum cascade lasers, gas lasers, and dye lasers. These diagnostics are designed to measure temperature, pressure, velocity, flux, and a variety of chemical species. ​The resulting sensors can provide excellent sensitivity, high signal-to-noise ratio, and a range of spatial & temporal resolutions. 

The sensors are employed to a variety of applications, including;
  • the monitoring and control of combustion emissions, 
  • the studying of chemical kinetics, 
  • the optimization of engine and gas turbine performance, 
  • the detection of environmental pollutants, 
  • the measurement of human breath exhaust.
A range of techniques are used to develop these sensors, including;
  • Direct absorption (DA) spectroscopy
  • Wavelength modulation spectroscopy (WMS) with 2nd harmonic detection
  • Frequency modulation (FM) spectroscopy
  • Cavity ringdown spectroscopy (CRDS)
  • Velocity modulation (VM) spectroscopy​
  • Spectral emission measurements