Multiwavelength surface contouring from phase-coded noisy diffraction patterns: wavelength-division optical setup

Vladimir Katkovnik; Igor Shevkunov; Nikolay V. Petrov; Karen Egiazarian

doi:10.1117/1.OE.57.8.085105

26 August 2018 Multiwavelength surface contouring from phase-coded noisy diffraction patterns: wavelength-division optical setup

Vladimir Katkovnik, Igor Shevkunov, Nikolay V. Petrov, Karen Egiazarian

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Optical Engineering, Vol. 57, Issue 8, 085105 (August 2018). https://doi.org/10.1117/1.OE.57.8.085105

Abstract

We propose an algorithm for absolute phase retrieval from multiwavelength noisy phase coded diffraction patterns. A lensless optical system is considered with a set of successive single wavelength experiments (wavelength-division setup). The phase masks are applied for modulation of the multiwavelength object wavefronts. The algorithm uses the forward/backward propagation for coherent light beams and sparsely encoding wavefronts, which leads to the complex-domain block-matching three-dimensional filtering. The key-element of the algorithm is an original aggregation of the multiwavelength object wavefronts for high-dynamic-range absolute phase reconstruction. Simulation tests demonstrate that the developed approach leads to the effective solutions explicitly using the sparsity for noise suppression and high-accuracy object absolute phase reconstruction from noisy data.

CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Vladimir Katkovnik, Igor Shevkunov, Nikolay V. Petrov, and Karen Egiazarian "Multiwavelength surface contouring from phase-coded noisy diffraction patterns: wavelength-division optical setup," Optical Engineering 57(8), 085105 (26 August 2018). https://doi.org/10.1117/1.OE.57.8.085105

Received: 1 May 2018; Accepted: 31 July 2018; Published: 26 August 2018

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