Study of the structure of reflection holgrams on a dichromate gelatin layer

M. N. Meshalkina; Vadim V. Smirnov

doi:10.1117/12.19394

1 February 1991 Study of the structure of reflection holgrams on a dichromate gelatin layer

M. N. Meshalkina, Vadim V. Smirnov

Proceedings Volume 1238, Three-Dimensional Holography: Science, Culture, Education; (1991) https://doi.org/10.1117/12.19394
Event: International Seminar on 3D Holography, 1989, Kiev, Ukraine

Abstract

The distribution of holograi structhre period and aodulation aaplitude of the gelatin refractive index in the layer thickness under different developent conditions s studied on the base of microcuts of holographic optical eIeents on a dichroaate gelatin layer. It was shown tMt development with swelling at p11:4. 7 provides a uniform hclogras structure throughout the recording layer thickness. 2JJflj Analysis of spectral characteristics of election holographic optical eieents (E) on a dichronate geatin 1) layer by the coupled waves or flake media theories suggests a substantially sxal1er rated thickness of hologram structure as compared to tof recording layer. When diffraction efficiency (DEl values account for 90 and above a rated thickness of bolograas is generally associated with a high value of oduiation amplitude of gelatin refractive index n1of the hologram in this case the contribution of deep layers of reflection hologram structure into the DE value appears to be minor. Lack of fire data on the n1distribution and period T of hologram structure in gelatin layer haapers working out HO iving optimal optical characteristics such as high BE prescribed band of spectral and angular selectiviti and having a low lev?l of diffused light. The paper deals with the experimental procedure aad results of the above parameters of hologram strctre wich allow cptiization of the process of E paraaeters close to theoretical ones. 3 - EXPERBIENTAL BRQCEDURE Studes were performed 2n 10

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M. N. Meshalkina and Vadim V. Smirnov "Study of the structure of reflection holgrams on a dichromate gelatin layer", Proc. SPIE 1238, Three-Dimensional Holography: Science, Culture, Education, (1 February 1991); https://doi.org/10.1117/12.19394

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KEYWORDS

Holograms

Holographic optical elements

Holography

Microscopes

Particle filters

Reflection

Refractive index

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