Abstract

Some parameters related to the photographic recording of digital data by means of superposed diffraction gratings have been studied. The efficiencies of composite patterns formed by coherent multiple-beam interference depend strongly on the average exposure, beam balance ratios, spatial frequencies employed, and whether the exposures are made simultaneously or sequentially. Simultaneous exposures of N recording beams yield first-order outputs that are more intense by the factor N than the outputs of the same number of sequential exposures, other conditions being equal. The usable readout signal strength is limited primarily by the appearance of false images caused by nonlinear film transfer characteristics.

© 1970 Optical Society of America

Application of Phase Modulation to Digital Data Recording By Means of Superposed Diffraction Gratings

L. L. Blackmer, A. P. VanKerkhove, J. G. Streiffert, and R. E. Baldwin
Appl. Opt. 10(5) 1148-1153 (1971)

An Instrument for Recording the Optical–Path Variation of Transmitting Objects

R. L. Lamberts
Appl. Opt. 9(6) 1345-1356 (1970)

Techniques for Producing Low-Noise, Improved Efficiency Holograms

K. S. Pennington and J. S. Harper
Appl. Opt. 9(7) 1643-1650 (1970)

Thick Absorption Recording Media in Holography

A. A. Friesem and J. L Walker
Appl. Opt. 9(1) 201-214 (1970)

Acoustic Hologram Formation with a Frequency Shifted Reference Beam

R. L. Whitman
Appl. Opt. 9(6) 1375-1378 (1970)