Accession Number:

AD0752565

Title:

Propagation of Multiwavelength Laser Radiation through Atmospheric Turbulence

Descriptive Note:

Quarterly rept. 15 Jun-15 Sep 1972

Corporate Author:

OREGON GRADUATE CENTER BEAVERTON

Personal Author(s):

• Kerr, J. R.

Report Date:

1972-10-15

Pagination or Media Count:

28.0

Abstract:

The program represents a continuation of a comprehensive experimental investigation of laser beam scintillations due to atmospheric turbulence. The report summarizes the efforts that are underway on three aspects of the PROBLEM 1 multiwavelength scintillations over a long horizontal path, 2 turbulence intermittency effects, and 3 transmitter-aperture effects including the cancellation of atmospherically-induced beam wander. The long-path horizontal measurements are expected to clarify the behavior of beam statistics at very high levels of integrated-path turbulence. The effects of fundamental turbulence intermittencies on data spread, confidence limits, and propagation analyses are postulated to be much more significant than generally realized. The cancellation of atmospherically-induced beam wander and the clarification of predictions from a recent theory of reciprocity for a turbulent path are of potentially great practical importance in the design of laser illumination systems.

Descriptors:

• *COHERENT RADIATION
• *LIGHT TRANSMISSION
• ATMOSPHERIC MOTION
• EXPERIMENTAL DESIGN
• GAS LASERS
• INFRARED LASERS
• SCINTILLATION
• SYSTEMS ENGINEERING

Subject Categories:

• Atmospheric Physics
• Lasers and Masers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE