OSA's Digital Library

Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 9 — May. 1, 2010
  • pp: 1470–1472

Use of a moiré deflectometer on a telescope for atmospheric turbulence measurements

Saifollah Rasouli  »View Author Affiliations


Optics Letters, Vol. 35, Issue 9, pp. 1470-1472 (2010)
http://dx.doi.org/10.1364/OL.35.001470


View Full Text Article

Enhanced HTML    Acrobat PDF (289 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

An instrument has been built for the study of the atmospheric turbulence by measuring the fluctuation of the angle of arrival across a telescope aperture using moiré deflectometry. A slightly divergent laser beam passes through a turbulent ground level atmosphere and enters the telescope aperture. The laser beam is recollimated behind the telescope’s focal point by means of a collimator. The collimated beam passes through a moiré deflectometer. The fluctuating self-image of the first grating is formed on the second grating of the moiré deflectometer and fluctuating moiré fringes are formed. Using moiré fringe fluctuations we have calculated the fluctuations of the angle of arrival, the Fried’s parameter r 0 , and the atmospheric refractive index structure constant. Because of the magnifications of the telescope and moiré deflectometry, the precision of the technique can potentially be 1 order of magnitude more precise than previous methods.

© 2010 Optical Society of America

OCIS Codes
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(100.2650) Image processing : Fringe analysis
(110.6760) Imaging systems : Talbot and self-imaging effects
(110.6770) Imaging systems : Telescopes
(120.4120) Instrumentation, measurement, and metrology : Moire' techniques

ToC Category:
Imaging Systems

History
Original Manuscript: January 19, 2010
Revised Manuscript: March 7, 2010
Manuscript Accepted: March 16, 2010
Published: April 30, 2010

Citation
Saifollah Rasouli, "Use of a moiré deflectometer on a telescope for atmospheric turbulence measurements," Opt. Lett. 35, 1470-1472 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-9-1470


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. S. Rasouli and M. T. Tavassoly, Opt. Lett. 31, 3276 (2006). [CrossRef] [PubMed]
  2. S. Rasouli and M. T. Tavassoly, Opt. Lett. 33, 980 (2008). [CrossRef] [PubMed]
  3. S. Rasouli and M. T. Tavassoly, Proc. SPIE 6364, 63640G (2006). [CrossRef]
  4. S. Rasouli, K. Madanipour, and M. T. Tavassoly, Proc. SPIE 6364, 63640K (2006). [CrossRef]
  5. S. Rasouli, A. N. Ramaprakash, H. K. Das, C. V. Rajarshi, Y. Rajabi, and M. Dashti, Proc. SPIE 7476, 74760K (2009). [CrossRef]
  6. F. Roddier, in Progress in Optics XIX, E.Wolf, ed. (North-Holland, 1981), pp. 281–376. [CrossRef]
  7. M. Sarazin and F. Roddier, Astron. Astrophys. 227, 294 (1990).
  8. M. S. Belen’kii, J. M. Stewart, and P. Gillespie, Appl. Opt. 40, 1321 (2001). [CrossRef]

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.

Figures

Fig. 1 Fig. 2 Fig. 3
 

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited