Accession Number:

ADA465061

Title:

Scintillation Measurements of Broadband 980nm Laser Light in Clear Air Turbulence

Descriptive Note:

Journal article

Corporate Author:

JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF ELECTRICAL AND COMPUTER ENGINEERING

Report Date:

2004-01-01

Pagination or Media Count:

13.0

Abstract:

Intensity scintillation variances and intensity probability density functions PDF were experimentally measured for broad-band 2nm, 980 nm laser light reflected by two corner-cube retro-reflectors as a function of retro-reflector lateral spacing over a short 75 m atmospheric optical path. The PDFs transitioned from broad double peaked beta shaped densities to log-normal ones as the retro-reflector spacing was increased to exceed the optical field lateral coherence length. Specific spacing for a given average atmospheric refractive index structure constant Cn2 eliminated coherent interference between light beams returned by each retro-reflector.

Subject Categories:

  • Meteorology
  • Statistics and Probability
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE