Extinction of CO2 laser radiation by fog and rain.
Results of extinction measurements of CO(2) laser radiation by fog and rain are discussed. Experimental results obtained in fog with extinction ranging from 1 to 72 dB/km and in rain with extinction ranging from 1.7 to 17 dB/km are reported. Extinction by fog is supported by an extensive particle size data base. Calculations of extinction obtained from size distributions yielded extinction in excess of 290 dB/km. Measurements show that transmission losses in dense fog can easily be 6 orders of magnitude greater than losses in heavy rain.
Chimelis
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US Air Force Wright Aeronautical Laboratories, Avionics Laboratory, Electro-Optics Branch, Wright-Patterson AFB, Ohio 45433, USA.