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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 22 — Oct. 29, 2007
  • pp: 14844–14860

Improved detection of atmospheric turbulence with SLODAR

Michael Goodwin, Charles Jenkins, and Andrew Lambert  »View Author Affiliations


Optics Express, Vol. 15, Issue 22, pp. 14844-14860 (2007)
http://dx.doi.org/10.1364/OE.15.014844


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Abstract

We discuss several improvements in the detection of atmospheric turbulence using SLOpe Detection And Ranging (SLODAR). Frequently, SLODAR observations have shown strong ground-layer turbulence, which is beneficial to adaptive optics. We show that current methods which neglect atmospheric propagation effects can underestimate the strength of high altitude turbulence by up to ~ 30%. We show that mirror and dome seeing turbulence can be a significant fraction of measured ground-layer turbulence, some cases up to ~ 50%. We also demonstrate a novel technique to improve the nominal height resolution, by a factor of 3, called Generalized SLODAR. This can be applied when sampling high-altitude turbulence, where the nominal height resolution is the poorest, or for resolving details in the important ground-layer.

© 2007 Optical Society of America

OCIS Codes
(000.2170) General : Equipment and techniques
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(110.6770) Imaging systems : Telescopes

ToC Category:
Atmospheric and Oceanic Optics

History
Original Manuscript: June 15, 2007
Revised Manuscript: August 30, 2007
Manuscript Accepted: September 9, 2007
Published: October 25, 2007

Citation
Michael Goodwin, Charles Jenkins, and Andrew Lambert, "Improved detection of atmospheric turbulence with SLODAR," Opt. Express 15, 14844-14860 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-22-14844


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References

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