Abstract

Hardened gelatin films sensitized with ammonium dichromate can be utilized to record high quality holograms. The maximum diffraction efficiency of the hologram approaches 90%. The light scattering from the hologram is so low that under ordinary light the hologram plate appears almost indistinguishable from a clear glass plate. Either a transmission or a reflection hologram can be recorded. Linear recording range of light amplitude is large. A practical method of preparing and processing the film is described, and the exposure characteristics are presented.

© 1969 Optical Society of America

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References

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  1. J. Kosav, Light-Sensitive Systems (John Wiley & Sons, Inc., New York, 1965), Chap. 2.
  2. T. A. Shankoff, Appl. Opt. 7, 2101 (1968).
    [CrossRef] [PubMed]
  3. C. B. Burckhardt, J. Opt. Soc. of Amer. 57, 601 (1967).
    [CrossRef]
  4. H. W. Kogelnik, Proceeding of the Symposium on Modern Optics (Polytechnic Press, Brooklyn, 1967), pp. 605–617.
  5. T. H. James, C. E. Mees, The Theory of the Photographic Process (Macmillan Company, Inc., New York, 1966), Chap. 3.

1968 (1)

1967 (1)

C. B. Burckhardt, J. Opt. Soc. of Amer. 57, 601 (1967).
[CrossRef]

Burckhardt, C. B.

C. B. Burckhardt, J. Opt. Soc. of Amer. 57, 601 (1967).
[CrossRef]

James, T. H.

T. H. James, C. E. Mees, The Theory of the Photographic Process (Macmillan Company, Inc., New York, 1966), Chap. 3.

Kogelnik, H. W.

H. W. Kogelnik, Proceeding of the Symposium on Modern Optics (Polytechnic Press, Brooklyn, 1967), pp. 605–617.

Kosav, J.

J. Kosav, Light-Sensitive Systems (John Wiley & Sons, Inc., New York, 1965), Chap. 2.

Mees, C. E.

T. H. James, C. E. Mees, The Theory of the Photographic Process (Macmillan Company, Inc., New York, 1966), Chap. 3.

Shankoff, T. A.

Appl. Opt. (1)

J. Opt. Soc. of Amer. (1)

C. B. Burckhardt, J. Opt. Soc. of Amer. 57, 601 (1967).
[CrossRef]

Other (3)

H. W. Kogelnik, Proceeding of the Symposium on Modern Optics (Polytechnic Press, Brooklyn, 1967), pp. 605–617.

T. H. James, C. E. Mees, The Theory of the Photographic Process (Macmillan Company, Inc., New York, 1966), Chap. 3.

J. Kosav, Light-Sensitive Systems (John Wiley & Sons, Inc., New York, 1965), Chap. 2.

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Figures (2)

Fig. 1
Fig. 1

Photographs of reconstructed images. (a) is a photograph of a real image containing approximately 104 diffraction limited spots (100 μ in diameter) reconstructed from a transmission hologram, 1.25 mm in diameter. The diffraction efficiency is 15%. (b) Shows the effect of nonlinear recording on the same image. The nonlinear recording increases the efficiency to about 50% but introduces a severe nonuniformity of the reconstructed image. (c) Shows a photograph of a 3-D image reconstructed from a reflection hologram illuminated with an ordinary 100-W tungsten light bulb. The color of the hologram image was green, although the hologram recording laser light was blue. The center of the image is in the plane of the hologram and each side of the two dice measures 2 cm.

Fig. 2
Fig. 2

Exposure characteristics. The straight line portion of each curve indicates the linear recording range. For curves A and B, both signal and reference beams illuminated the same side of the film and the angles between beams were 10° and 60°, respectively. The normal to the film bisected the directions of propagations of the two beams. For curve C, two beams illuminated opposite sides of the film, one perpendicular to the plate and the other 10° from the normal. In all cases, the intensity of each beam was 0.5 mW/cm2.

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