Abstract
The effectiveness of using shifted Zernike polynomials as basis functions for a modal adaptive optics phase compensation system has been investigated for centrally obscured apertures. Several different types of phase aberration mechanisms have been considered including atmospheric turbulence and laser resonator gain media distortions. Comparisons of wave-front fitting errors indicate that improved fits result, relative to centrally obscured Zernikes polynomials, for cases in which the phase aberrations have high spatial frequencies.
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