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Virtual pyramid wavefront sensor for phase unwrapping
Author(s)
Date Issued
2016-10-10
Date Available
2022-08-15T16:22:51Z
Abstract
Noise affects wavefront reconstruction from wrapped phase data. A novel method of phase unwrapping is proposed with the help of a virtual pyramid wavefront sensor. The method was tested on noisy wrapped phase images obtained experimentally with a digital phase-shifting point diffraction interferometer. The virtuality of the pyramid wavefront sensor allows easy tuning of the pyramid apex angle and modulation amplitude. It is shown that an optimal modulation amplitude obtained by monitoring the Strehl ratio helps in achieving better accuracy. Through simulation studies and iterative estimation, it is shown that the virtual pyramid wavefront sensor is robust to random noise.
Sponsorship
European Commission - Seventh Framework Programme (FP7)
European Research Council
Science Foundation Ireland -- replace
University College Dublin
Other Sponsorship
ConsejerÃa de Educación, Juventud y Deporte of Comunidad de Madrid
Spanish Government Grant
Type of Material
Journal Article
Publisher
Optica
Journal
Applied Optics
Volume
55
Issue
29
Start Page
8363
End Page
8367
Copyright (Published Version)
2016 Optical Society of America
Language
English
Status of Item
Peer reviewed
ISSN
1559-128X
This item is made available under a Creative Commons License
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Owning collection
Scopus© citations
2
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