Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Additive–subtractive two-wavelength ESPI contouring by using a synthetic wavelength phase shift

Not Accessible

Your library or personal account may give you access

Abstract

The addition correlation of two speckle fields by simultaneous illumination at different wavelengths is used for object contouring in a Twyman–Green-type interferometer. Fringe visibility is enhanced when the stochastic speckle background intensity obtained from a reference plane modulation is subtracted. We calculate the contour phase map by using a phase-shift algorithm in the synthetic wavelength. A comparison with a sequential illumination, phase difference method based on a laser wavelength phase shift is given. The test setup does not need to be stable on an interferometric scale, and therefore a method is provided that lends itself to applications in noisy environments.

© 1998 Optical Society of America

Full Article  |  PDF Article
More Like This
Geometry for contouring by electronic speckle pattern interferometry based on shifting illumination beams

Y. Zou, H. Diao, X. Peng, and H. Tiziani
Appl. Opt. 31(31) 6616-6621 (1992)

Transient deformation measurement by double-pulsed-subtraction TV holography and the Fourier transform method

Antonio Fernández, Jesús Blanco-García, Ángel F. Doval, Javier Bugarín, Benito V. Dorrío, Carlos López, José M. Alén, Mariano Pérez-Amor, and José L. Fernández
Appl. Opt. 37(16) 3440-3446 (1998)

Cited By

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

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (7)

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

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (22)

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

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved