Physics – Optics
Scientific paper
Feb 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002spie.4494..188b&link_type=abstract
Proc. SPIE Vol. 4494, p. 188-201, Adaptive Optics Systems and Technology II, Robert K. Tyson; Domenico Bonaccini; Michael C. Rog
Physics
Optics
Scientific paper
A method for determining the registration of an adaptive optical system is presented. Three deformable mirror actuators are sinusoidally driven at a high rate and the resulting gradients are measured using a Hartmann sensor. The gradient measurements are used to determine the translational, rotational, and magnificational registration of the deformable mirror relative to the Hartmann wavefront sensor. Two configurations are presented. The first is not effected by the compensation system but requires the use of auxiliary beams outside the clear aperture of the adaptive optical system. In the second configuration, the dithering actuators are within the clear aperture of the adaptive optical system. Simulation results are presented that show that the method can be used reliably in either configuration. In the second configuration, the method can be used reliably even in the presence of residual amplitude and phase aberrations.
Barchers Jeffrey D.
Lee David J.
Rhoadarmer Troy A.
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