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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 33, Iss. 36 — Dec. 20, 1994
  • pp: 8406–8411

Atmospheric inner-scale effects on normalized irradiance variance

Charles A. Davis and D. L. Walters  »View Author Affiliations


Applied Optics, Vol. 33, Issue 36, pp. 8406-8411 (1994)
http://dx.doi.org/10.1364/AO.33.008406


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Abstract

We have investigated five types of atmospheric optical-turbulence inner scales for their effects on normalized laser irradiance variance in the Rytov and early saturation regimes: (1) zero inner scale, (2) Gaussian inner scale, (3) Hill’s viscous-convective enhancement inner scale, (4) Frehlich’s parameterization of the viscous-convective enhancement, and (5) turbulence spectrum truncation because of the discrete grid representation. Wave-optics computer simulations yielded normalized irradiance variances within 2% of the results from numerical integrations of the Rytov–Tatarskii predictions. In the Rytov regime a Gaussian inner scale reduces the normalized irradiance variance compared with the zero-inner-scale case, and the viscous-convective inner scale first raises, then lowers the irradiance variance as the inner-scale size increases. In the saturation regime all inner-scale models increase the intensity variance for a spherical wave.

© 1994 Optical Society of America

History
Original Manuscript: April 12, 1994
Revised Manuscript: May 23, 1994
Published: December 20, 1994

Citation
Charles A. Davis and D. L. Walters, "Atmospheric inner-scale effects on normalized irradiance variance," Appl. Opt. 33, 8406-8411 (1994)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-33-36-8406

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