Laser-Raman radar for air pollution probe

As an experimental verification of a novel application of the laser-Raman radar, frequency-shifted Raman components of a Q-switched ruby-laser pulse from atmospheric molecular gases and from chemicals in an oil plume, such as CO
2
, CO, SO
2
, O
2
, and N
2
, were analyzed selectively. These results demonstrate the practical usefulness of this new optical system as a real-time air pollution probe.