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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 73, Iss. 3 — Mar. 1, 1983
  • pp: 269–276

K-distributed phase differences in turbulent random phase screens

Klaus Schätzel  »View Author Affiliations


JOSA, Vol. 73, Issue 3, pp. 269-276 (1983)
http://dx.doi.org/10.1364/JOSA.73.000269


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Abstract

Optical path-length fluctuations across a plume of heated air are investigated by various interferometric techniques. Real-time data processing yields spatial and temporal structure functions as well as histograms of optical phase differences. Histograms obtained over a large range of beam separations and beam heights above the heater show an excellent agreement with the class of one-dimensional K distributions. The dependence of the distribution parameters on the probe-beam separation agrees well with a simple empirical model based on four parameters: mean number and mean strength of turbulent eddies and inner and outer eddy scales. The model permits a correct prediction of the averaged intensity in the far field of the screen. Some characteristics of higher-intensity moments can be reproduced by a facet model based on K-distributed phase gradients.

© 1983 Optical Society of America

Citation
Klaus Schätzel, "K-distributed phase differences in turbulent random phase screens," J. Opt. Soc. Am. 73, 269-276 (1983)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-73-3-269


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