Abstract
Phase diversity is a phase-retrieval algorithm that uses a pair of intensity images taken symmetrically about the wave front to be determined. If these images are taken about the system input pupil this is equivalent to a curvature-sensing algorithm. Traditionally a defocus aberration kernel is used to produce the phase-diverse data. We present a generalization of this method to allow the use of other functions as the diversity kernel. We discuss the necessary and sufficient conditions that such a function must satisfy for use in a null wave-front sensor. Computer simulations were used to validate these results. ©2004 Optical Society of America.
Original language | English |
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Pages (from-to) | 2707-2709 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 29 |
Issue number | 23 |
DOIs | |
Publication status | Published - 1 Dec 2004 |