We apply the multiply subtractive anchoring method for efficient phase spectrum retrieval, which is based on the fast Fourier transform and Lagrange polynomials. Because the polynomials eventually diverge, choosing the optimum anchoring points is crucial. It is demonstrated that, if more than two anchoring points are chosen, the algorithm’s performance can easily deteriorate.
© 2011 Optical Society of America
Original Manuscript: October 21, 2010
Revised Manuscript: January 17, 2011
Manuscript Accepted: January 21, 2011
Published: March 22, 2011
Er’el Granot and Shmuel Sternklar, "Efficient phase spectrum reconstruction with the discrete multiply subtractive anchoring algorithm," J. Opt. Soc. Am. B 28, 792-795 (2011)