Phase retrieval using spatially modulated illumination

Phase retrieval using spatially modulated illumination

In this Letter, we propose a method for retrieving the phase of a wavefront from the diffraction patterns recorded when the object is sequentially illuminated by spatially modulated light. For wavefronts having a smooth phase, the retrieval is achieved by using a deterministic method. When the phase...

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Bibliographic Details
Main Authors: Gao, Peng, Pedrini, Giancarlo, Zuo, Chao, Osten, Wolfgang
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2014
Subjects:
DRNTU::Engineering::Mechanical engineering::Mechanics and dynamics
Online Access:https://hdl.handle.net/10356/104869
http://hdl.handle.net/10220/20313
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Institution: Nanyang Technological University
Language: English
Description
Summary:In this Letter, we propose a method for retrieving the phase of a wavefront from the diffraction patterns recorded when the object is sequentially illuminated by spatially modulated light. For wavefronts having a smooth phase, the retrieval is achieved by using a deterministic method. When the phase has discontinuities, an iterative process is used for the retrieval and enhancement of the spatial resolution. Both the deterministic and iterative phase reconstructions are demonstrated by experiments.

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