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Proceedings Paper

Characterization of laboratory-generated turbulence by optical phase measurements
Author(s): Eric P. Magee; Byron M. Welsh
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Paper Abstract

This paper describes an experiment characterizing the statistical properties of laboratory generated turbulence using a shearing interferometer based wavefront sensor. The statistics of the turbulence have been characterized by taking many measurements of optical wavefronts that have propagated through the turbulence. The wavefront sensor is capable of both high time and spatial resolution. The wavefront sensor measures the wavefront phase over a circular area corresponding to the size of the propagated laser beam. Nearly 256 samples of the wavefront phase in both the x- and y-directions are sampled per measurement. From these optical phase measurements, a phase structure function was calculated. Laboratory generated turbulence that produces locally homogeneous and isotropic disturbances has been developed for the purpose of studying current and future adaptive optics and image enhancement techniques.

Paper Details

Date Published: 2 December 1993
PDF: 12 pages
Proc. SPIE 2005, Optical Diagnostics in Fluid and Thermal Flow, (2 December 1993); doi: 10.1117/12.163751
Show Author Affiliations
Eric P. Magee, Air Force Institute of Technology (United States)
Byron M. Welsh, Air Force Institute of Technology (United States)

Published in SPIE Proceedings Vol. 2005:
Optical Diagnostics in Fluid and Thermal Flow
Soyoung Stephen Cha; James D. Trolinger, Editor(s)

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