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Development of speckle shearing interferometer error analysis as an aperture function of wavefront divergence

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journal contribution
posted on 2008-09-18, 09:56 authored by Wan S. Wan Abdullah, Jon PetzingJon Petzing
Increasing the confidence in whole-field speckle-based optical metrology transducers requires a detailed understanding of the error sources of respective instruments. The analysis of error contributions to the optical phase output of a Michelson-based speckle shearing interferometer have been modelled. Specific attention has been paid to the effect of the aperture at the image plane, with respect to collimated and non-collimated object illumination. This modelling presents an advance on a previous modelled analytical relationship, which includes partial displacement derivative terms and components as a function of illumination geometries and, importantly, aperture effects. The work has identified a phase error contribution due to the aperture function of between 0.15% and 1.48%, dependent on the object distance, when considering a planar object undergoing predominantly surface to normal deformation.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Citation

WAN ABDULLAH, W.S. and PETZING, J.N., 2005. Development of speckle shearing interferometer error analysis as an aperture function of wavefront divergence. Journal of Modern Optics, Vol. 52 (11), pp. 1495–1510 [DOI: 10.1080/09500340500052887]

Publisher

© Taylor & Francis

Publication date

2005

Notes

This article was published in the journal, Journal of Modern Optics, and the definitive version is available at: http://www.tandf.co.uk/journals/titles/09500340.asp

ISSN

0950-0340

eISSN

1362-3044

Language

  • en

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