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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 4 — Feb. 15, 2014
  • pp: 789–792

Isoplanatic angle in finite distance: theory analysis on measurement feasibility

Long-Kun Yu, Xu Jing, Hong Shen, Zai-Hong Hou, and Yi Wu  »View Author Affiliations

Optics Letters, Vol. 39, Issue 4, pp. 789-792 (2014)

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Previous studies have shown that the isoplanatic angle (θ0) can be measured by using plane-wave scintillation. The problem of measuring the isoplanatic angle in a finite distance using spherical-wave scintillation is considered in this Letter. Based on theoretical analysis and numerical evaluation, we found that by selecting suitable aperture size and aperture separations, the isoplanatic angle can be estimated through spherical-wave scintillation and covariance of irradiance in three received apertures using a point source. The error of θ0 measured by this method is less than 6% in typical turbulence models.

© 2014 Optical Society of America

OCIS Codes
(010.1290) Atmospheric and oceanic optics : Atmospheric optics
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(030.6600) Coherence and statistical optics : Statistical optics

ToC Category:
Atmospheric and Oceanic Optics

Original Manuscript: November 6, 2013
Revised Manuscript: December 29, 2013
Manuscript Accepted: December 29, 2013
Published: February 5, 2014

Long-Kun Yu, Xu Jing, Hong Shen, Zai-Hong Hou, and Yi Wu, "Isoplanatic angle in finite distance: theory analysis on measurement feasibility," Opt. Lett. 39, 789-792 (2014)

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