Atmospheric turbulence profiling with slodar using multiple adaptive optics wavefront sensors
Applied Optics, Vol. 47, Issue 11, pp. 1880-1892 doi:10.1364/AO.47.001880
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- OCIS Codes:
- (010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
- (010.7350) Atmospheric and oceanic optics : Wave-front sensing
- (110.1085) Imaging systems : Adaptive imaging
Citation
Lianqi Wang, Matthias Schöck, and Gary Chanan, "Atmospheric turbulence profiling with slodar using multiple adaptive optics wavefront sensors," Appl. Opt. 47, 1880-1892 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-11-1880
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The slope detection and ranging (slodar) method recovers atmospheric turbulence profiles from time averaged spatial cross correlations of wavefront slopes measured by Shack-Hartmann wavefront sensors. The Palomar multiple guide star unit (MGSU) was set up to test tomographic multiple guide star adaptive optics and provided an ideal test bed for slodar turbulence altitude profiling. We present the data reduction methods and slodar results from MGSU observations made in 2006. Wind profiling is also performed using delayed wavefront cross correlations along with slodar analysis. The wind profiling analysis is shown to improve the height resolution of the slodar method and in addition gives the wind velocities of the turbulent layers.
© 2008 Optical Society of America
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History
Original Manuscript: September 4, 2007
Manuscript Accepted: January 25, 2008
Revised Manuscript: December 20, 2007
Published: April 4, 2008
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Author Affiliations
Thirty Meter Telescope Project
University of California
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