Once wavefront aberrations exceed a threshold value, phase retrieval algorithm convergence suffers greatly. We can overcome this problem by estimating segment tip and tilt values from differences between a computed PSF and the measured PSF.
© 2006 Optical Society of America
(100.0100) Image processing : Image processing
(100.5070) Image processing : Phase retrieval
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
T. Zielinski and J. R. Fienup, "Extending Wavefront Sensing Capture Range for Segmented Systems through Tip and Tilt Estimation," in Frontiers in Optics, OSA Technical Digest (CD) (Optical Society of America, 2006), paper FMF4.