SPECTROSCOPIC DETECTION OF SO2 AND CO2 MOLECULES IN POLLUTED ATMOSPHERE BY LASER-RAMAN RADAR TECHNIQUE

Abstract

Raman backscatter of a Q‐switched ruby laser beam from SO₂ and CO₂ molecules were selectively detected in the polluted atmosphere by means of a laser‐Raman radar system. The spectrum of these Raman components was compared quantitatively with that for the ordinary and sulphur dioxide atmospheres, along with the estimation of relative concentrations of these molecules.