Laser Remote Sensing

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Laser Remote Sensing
Probe Gas
There can be absorption, scatter and/ or
fluorescence
Optical Receiver Detection System
R
R Velocity ? time
Laser
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Schematic diagram of a differential absorption
LIDAR system
The idea behind differential absorption lidar
(DIAL)
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Detection of molecules by DIAL
DIAL SPECTRA OF NO2
DIAL SPECTRA OF SO2
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DOPPLER LIDAR SETUP
Beam splitter
Ring Dye Laser
Argon Ion Laser
RF Driver
Lens
Acousto-optic Device
Telescope
Computer
Spectrum Analyzer
Amp
PMT
Moving Target (water, aerosol)
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DOPPLER LIDAR RESULTS

• Measurement of velocity and turbulence profiles
• Measurement of flow rate of polluted water
  discharges
• Measurement of gaseous vapors discharges
• Acoustic Vibrations

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