Comparison of Laser Methods for the Remote Detection of Atmospheric Pollutants,
Abstract
The paper discusses and compares three methods of remote air pollution detection: Raman backscattering, resonance backscattering, and resonance absorption. Theoretical expressions are derived for the minimum detectable pollutant concentration and in each case the depth resolution and the problems of interference, pump depletion, and background noise are discussed. The paper also includes a brief discussion of possible laser sources and gives numerical examples of the detectabilities based on present technology. The atmospheric transparency limits the useful range to a few kilometers for the Raman and resonance backscattering schemes. For the resonance absorption technique the useful range can be as great as fifty kilometers. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1971
- Accession Number
- AD0730770
Entities
People
- H. Kildal
- R. L. Byer
Organizations
- Stanford University