Open AccessSubspace-based method for phase retrieval in interferometry
Author(s) -
Abhijit Patil,
Pramod K. Rastogi
Publication year - 2005
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.13.001240
Subject(s) - interferometry , subspace topology , phase retrieval , optics , phase (matter) , waveform , computer science , pixel , noise (video) , phase noise , point (geometry) , algorithm , physics , fourier transform , artificial intelligence , mathematics , image (mathematics) , telecommunications , radar , quantum mechanics , geometry
A subspace-based method is applied to phase shifting interferometry for obtaining in real time values of phase shifts between data frames at each pixel point. A generalized phase extraction algorithm then allows for computing the phase distribution. The method is applicable to spherical beams and is capable of handling nonsinusoidal waveforms in an effective manner. Numerical simulations demonstrate phase measurement with high accuracy even in the presence of noise.