Abstract

This method consists of two steps. The first is to illuminate the object with a plurality of point sources each of which is mutually coherent with the reference source. All the points are contained within the pupil of the optical apparatus. The second step takes place after the hologram has been made in the manner mentioned. During the reconstruction, a mask is placed in the plane, conjugate to the plane containing the plurality of object-illuminating sources. An aperture in this mask is then moved to take positions to transmit only the light from one of the plurality of points at a time and to block the light from all the other points. The images thus detected are additive in intensity, simulating the plurality of illuminating point sources to be mutually incoherent.

© 1973 Optical Society of America

Speckle Reduction in Holography by Means of Random Spatial Sampling

F. T. S. Yu and E. Y. Wang
Appl. Opt. 12(7) 1656-1659 (1973)

Speckle Reduction Using Multiple Tones of Illumination

Nicholas George and Atul Jain
Appl. Opt. 12(6) 1202-1212 (1973)

Deterministic Diffusers for Holography

W. J. Dallas
Appl. Opt. 12(6) 1179-1187 (1973)

Speckle Reduction in Holography with a Spatially Incoherent Source

Makoto Kato, Yoshikazu Nakayama, and Tatsuro Suzuki
Appl. Opt. 14(5) 1093-1099 (1975)

Space-Invariant Holography with Quasi-Coherent Light

E. N. Leith and B. J. Chang
Appl. Opt. 12(8) 1957-1963 (1973)