ATTENUATION OF LASER RADIATION BY HC, FS, WP, AND FOG OIL SMOKES.
Abstract
The object of this project was to determine the feasibility of employing conventional smoke aerosols as potential countermeasures against laser radiation devices. A pulsed ruby laser, generating radiation at a wave-length of 6943A, was the radiation source. The percent attenuation of the laser beam was measured as the beam traversed hexachloroethane (HC), sulfur trioxide-chlorosulfonic acid (FS), white phosphorus (WP), and fog oil smokes contained in a closed chamber. The percent transmittance of a white-light beam through the smoke was also measured. From these measurements, the relative total obscuring power was calculated for both white-light and laser radiation. It is concluded that : WP, FS, HC, and fog oil smokes attenuate a 0.3-j laser radiation of 6943A by approximately the same percentage as white light. For a 2,000-w laser light power level, the laser white-light transmittance curves for smoke clouds follow the Beer-Lambert relationship down to the 90% attenuation level. Smokescreens appear to be an effective countermeasure against the tested ruby laser. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1967
- Accession Number
- AD0815270
Entities
People
- Bernard E. Simonson
- Ronald L. Ohlhaber