OSA's Digital Library

Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 22 — Nov. 15, 2006
  • pp: 3276–3278

Application of moiré technique to the measurement of the atmospheric turbulence parameters related to the angle of arrival fluctuations

Saifollah Rasouli and M. Taghi Tavassoly  »View Author Affiliations

Optics Letters, Vol. 31, Issue 22, pp. 3276-3278 (2006)

View Full Text Article

Enhanced HTML    Acrobat PDF (165 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



There are several methods for measuring ground-level atmospheric turbulence parameters, such as the refractive index profile and its fluctuations, correlations of the fluctuations in space and time, and the atmospheric refractive-index structure constant. These methods are based mainly on the measurement of fluctuations in intensity and location of an image formed by light propagating in the turbulent atmosphere or the fluctuations in impinging points of narrow light beams traversing the ground-level atmosphere. Exploiting the moiré technique, we suggest a high-precision approach for determining fluctuaions in the angle of arrival. When a low-frequency grating (carrier grating) is installed at a suitable distance from a telescope, its image, practically, forms on the focal plane of the telescope objective. Superimposing a physical grating (probe grating) of the same pitch as the image grating on the image forms the moiré pattern. The atmospheric turbulence distorts the image grating. Processing the fluctuations of successive moiré fringes can yield the mentioned parameters across a rather large cross section of the atmosphere with high accuracy, because of the moiré technique's magnifying character and access to a large volume of data, and does so in a comparatively simple and reliable manner.

© 2006 Optical Society of America

OCIS Codes
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(120.4120) Instrumentation, measurement, and metrology : Moire' techniques

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: July 26, 2006
Revised Manuscript: August 26, 2006
Manuscript Accepted: August 27, 2006
Published: October 26, 2006

Saifollah Rasouli and M. Taghi Tavassoly, "Application of moiré technique to the measurement of the atmospheric turbulence parameters related to the angle of arrival fluctuations," Opt. Lett. 31, 3276-3278 (2006)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. M. Sarazin and F. Roddier, Astron. Astrophys. 227, 294 (1990).
  2. A. Ziad, R. Conan, A. Tokovinin, F. Martin, and J. Borgnino, Appl. Opt. 39, 5415 (2000). [CrossRef]
  3. M. S. Belen'kii, J. M. Stewart, and P. Gillespie, Appl. Opt. 40, 1321 (2001). [CrossRef]
  4. A. S. Gurvich, I. S. Starobints, and K. A. O'Donnell, Izv. Akad. Nauk, Fiz. Atmos. Okeana 10, 413 (1974).
  5. K. Patorski, Handbook of the Moiré Fringe Technique (Elsevier, 1993).
  6. R. J. Sasiela and J. D. Shelton, J. Opt. Soc. Am. A 10, 646 (1993). [CrossRef]
  7. V. I. Tatarskii, Wave Propagation in a Turbulent Atmosphere (McGraw-Hill, 1961).
  8. S. Rasouli and M. T. Tavassoly, "Measurement of the refractive-index structure constant, and its profile in the ground-level atmosphere by moiré technique," in Proc. SPIE, 6364 (to be published).

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


Fig. 1 Fig. 2 Fig. 3
Fig. 4 Fig. 5

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited