Accession Number:

AD0777259

Title:

Measurements of the Temporal Power Spectra of a Propagated 10.6 micron Wavefront

Descriptive Note:

Corporate Author:

ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY

Personal Author(s):

Report Date:

1974-02-01

Pagination or Media Count:

93.0

Abstract:

The objective of this report is to present both the experimental procedures employed and the data obtained from measurements of the temporal power spectral density of the phase coherence of an atmospherically degraded 10. 6 micron wavelength laser beam. The phase coherence of the received beam was experimentally determined by use of an optical interferometer which measured the phase difference between two sampling apertures. The time history of the observed phase difference was computer processed to yield statistical estimates of the temporal power spectral density for the optical phase difference at the receiver. The experimental power spectral density curves are accurately calibrated in absolute units to provide usable data for designers of optical systems whose error analysis must include the direct or indirect phase coherence degradation effects of the atmosphere. Modified author abstract

Subject Categories:

  • Atmospheric Physics
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE