Physics – Optics
Scientific paper
Sep 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999spie.3762..300r&link_type=abstract
Proc. SPIE Vol. 3762, p. 300-307, Adaptive Optics Systems and Technology, Robert K. Tyson; Robert Q. Fugate; Eds.
Physics
Optics
Scientific paper
For non-Kolmogorov turbulence, phase structure function, residual phase structure function and long-exposure modulation transfer function (MTF) of low-order correction adaptive optical system are deduced by introducing generalized phase spatial spectrum. The analysis shows long- exposure MTF is as functions of (Beta) , which is the power- law exponent of phase power spectrum, and (rho) (subscript 0), which indicates the strength of atmospheric turbulence. Numerical results of long-exposure MTF, Strehl ratio and FWHM for different (Beta) and (rho) (subscript 0) are presented under the following conditions respectively: (1) the wavefront disturbance is not correcte,d namely open-loop; (2) the wavefront tilts are corrected; (3) one order and two order modes are corrected.
Jiang Wenhan
Ling Ning
Rao Changhui
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