title: Convergence criteria for iterative schemes in holographic interferometry and the tomography of strongly refracting objects.
abstract: Iterative schemes for tomographically reconstructing refractive-index fields are examined to establish sufficient conditions for convergence. The mappings which these algorithms represent are shown to be of a form n = f(n) amenable to analysis by the contraction mapping theorem, and a criterion is thereby provided for identifying convergent behavior and determining the number of iterations required to produce an approximate solution which is within a prescribed neighborhood of the limiting or fixed point n* As an example, this approach is applied for the case where a 1-D refractive-index field is iteratively reconstructed from numerically simulated interferometric data.
authors.forename: A T
authors.initials: AT
authors.lastname: Dolovich
authors.forename: G M
authors.initials: GM
authors.lastname: Gladwell