Abstract

A technique for separating the in-plane and out-of-plane motions of a tested object in hologram interferometry is described. In this technique, the object is illuminated with two symmetrically oriented beams, and an image plane hologram is recorded in photoconductor–thermoplastic devices which can be developed in situ and in virtually real time. Then the hologram is read out with the object waves only, thereby reconstructing the reference beam. If the object is moved or deformed during readout, fringes denoting equal in-plane motion appear as long as the motion is less than the speckle size. The exact arrangement is presented along with experimental results, which are compared with conventional holographic interferometry results.

© 1982 Optical Society of America

Holographic interferometry with reference beams modulated by the object motion

Horst Kreitlow, Thomas Kreis, and Werner Jüptner
Appl. Opt. 26(19) 4256-4262 (1987)

Orthogonal in-plane and out-of-plane fringe maps in holographic interferometry

Y. Katzir, A. A. Friesem, and I. Glaser
Opt. Lett. 8(3) 163-165 (1983)

Holographic interferometry: compensation for rigid body motion

C. P. Hu, J. L. Turner, and C. E. Taylor
Appl. Opt. 15(6) 1558-1564 (1976)

Simultaneous measurement of in-plane and out-of-plane displacement derivatives using dual-wavelength digital holographic interferometry

Gannavarpu Rajshekhar, Sai Siva Gorthi, and Pramod Rastogi
Appl. Opt. 50(34) H16-H21 (2011)

Spatial filtering velocimetry of objective speckles for measuring out-of-plane motion

M. L. Jakobsen, H. T. Yura, and S. G. Hanson
Appl. Opt. 51(9) 1396-1406 (2012)