OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 5 — Feb. 10, 2009
  • pp: 932–940

Angular displacement and deformation analyses using a speckle-based wavefront sensor

Percival F. Almoro, Giancarlo Pedrini, Arun Anand, Wolfgang Osten, and Steen G. Hanson  »View Author Affiliations


Applied Optics, Vol. 48, Issue 5, pp. 932-940 (2009)
http://dx.doi.org/10.1364/AO.48.000932


View Full Text Article

Enhanced HTML    Acrobat PDF (1487 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

Wavefronts incident on a random phase plate are reconstructed via phase retrieval utilizing axially displaced speckle intensity measurements and the wave propagation equation. Retrieved phases and phase subtraction facilitate the investigations of wavefronts from test objects before and after undergoing a small rotation or deformation without sign ambiguity. Angular displacement ( Δ θ ) between incident planar wavefronts is determined from the light source vacuum wavelength (λ) divided by the fringe spacing (Λ). Fourier analysis of the wavefront phase difference yields a peak frequency that is inversely proportional to Λ, and the sign gives the direction of rotation. Numerical simulations confirm the experimental results. In the experiments, the smallest Δ θ measured is 0.031 ° . The technique also permits deformation analysis of a reflecting test object under thermal loading. The technique offers simple, high resolution, noncontact, and whole field evaluation of three-dimensional objects before and after undergoing rotation or deformation.

© 2009 Optical Society of America

OCIS Codes
(030.1670) Coherence and statistical optics : Coherent optical effects
(030.6140) Coherence and statistical optics : Speckle
(050.1960) Diffraction and gratings : Diffraction theory
(090.2880) Holography : Holographic interferometry
(350.5030) Other areas of optics : Phase
(070.7345) Fourier optics and signal processing : Wave propagation

ToC Category:
Coherence and Statistical Optics

History
Original Manuscript: May 9, 2008
Revised Manuscript: October 7, 2008
Manuscript Accepted: January 14, 2009
Published: February 3, 2009

Citation
Percival F. Almoro, Giancarlo Pedrini, Arun Anand, Wolfgang Osten, and Steen G. Hanson, "Angular displacement and deformation analyses using a speckle-based wavefront sensor," Appl. Opt. 48, 932-940 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-5-932

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

Supplementary Material


» Media 1: MOV (2684 KB)     

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited