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Dual Phase Shifting Holographic Interferometry: An Overview

Rastogi, Pramod  
2019
X Iberoamerican Optics Meeting / XIII Latinamerican Meeting on Optics, Lasers and Applications / Mexican Optics and Photonics Meeting - Riao / Optilas / MOPM 2019

Phase measurement has been a topic of increasingly important interest to researchers active in optical metrology to an extent that substantial advances in the area have been reported over the past three decades. However, these developments have been largely unsuccessful in addressing the recurrent need to extract multiple displacement information transmitted through the phase. One particular advance that has opened new avenues in metrology is the use of estimation techniques to measure multiple phases, simultaneously. This approach has for the first time shown the capability of simultaneously measuring dual phase steps imparted to the two piezoelectric devices integrated in the configurations involving four-beam interferometry. This has primarily lead to research focused on understanding and implementing processes needed for supporting information embedded in such interferometers. This talk presents an overview of estimation techniques based on spectral decomposition with emphasis on describing the performance of each approach.

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Type
conference presentation
Author(s)
Rastogi, Pramod  
Date Issued

2019

Note

Keynote

Written at

EPFL

EPFL units
IMAC  
Event nameEvent placeEvent date
X Iberoamerican Optics Meeting / XIII Latinamerican Meeting on Optics, Lasers and Applications / Mexican Optics and Photonics Meeting - Riao / Optilas / MOPM 2019

Cancun, Mexico

September 23-27, 2019

Available on Infoscience
January 8, 2020
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/164428
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