Quantization of Scattering of Laser Beams. Window and Atmospheric Scattering at 1.06 micrometers.
Final rept. 5 Jun-4 Oct 73,
ENVIRONMENTAL RESEARCH INST OF MICHIGAN ANN ARBOR INFRARED AND OPTICS DIV
Pagination or Media Count:
A laser beam propagating through the atmosphere from a transmitter can be observed at various aspect angles because of scattering by the exit window of the transmitter and by particles in the atmosphere. The objective of this contract was to provide quantitative values for both types of scattering at the 1.06 micrometer laser wavelength. The contractual effort was conveniently divided into two tasks Task 1 - Measure the laser beam scattering for a set of five different window materials under these conditions clean, or dirty with small amounts of water, dust, and fingerprints oil, or cleaned, as would be done by a laser operator in the field Task 2 - Calculate the laser beam scattering for a standard clear and a standard hazy atmosphere as functions of polarization and receiver position for receiver fields of view of 300, 100, 30, and 1 mr. Procedures used are discussed, the results of the measurements and calculations are given in graphic form and a brief comparison of window and atmospheric scattering is presented along with conclusions and recommendations.
- Atmospheric Physics
- Lasers and Masers