Reflection silver-halide gelatin holograms

Yuri E. Usanov; Ye. A. Vavilova; N. L. Kosobokova; Michail K. Shevtsov

doi:10.1117/12.19391

1 February 1991 Reflection silver-halide gelatin holograms

Yuri E. Usanov, Ye. A. Vavilova, N. L. Kosobokova, Michail K. Shevtsov

Proceedings Volume 1238, Three-Dimensional Holography: Science, Culture, Education; (1991) https://doi.org/10.1117/12.19391
Event: International Seminar on 3D Holography, 1989, Kiev, Ukraine

Abstract

A new principle of reflection silverhalide gelatin (SHG) holograms generation is presented. The formation mechanism of the micro-cavity structure of holographic gratings is investigated. Based on the principle discussed here three methods of processing are suggested for making highly efficient SHG reflection holograms in the blue the green and the red regions of spectra with properties similar to those of conventional dichromated gelatin (DCG) holograms. 2. SHG HOLOGRAMS AND ANALYSIS OF THE PRINCIPAL OF THEIR FABRICATION Optical properties of DCG holograms and high light sensitivity of silver halide materials in the whole visible spectrum range can be combined in SHG holograms in which light field interference pattern recording is realized on silver halide grains while the light diffraction during the reconstruction takes place on a gelatin layer similar to DCG layer having a refractive index modulation. There exist a number of methods for transforming a ''silver'' structure into refracted index modulation structure. They are based on selective hardening of silver-halide layer gelatin. According to Pennington et. al. [1] selective hardening takes place as a result of the effect of laser or UV light on a silver halide developed fixed bleached and ammonium dichromate sensitized. A gelatin in isophase grating planes is hardened to a less degree that between planes due to high adsorption of a halide silver. After the removal of halide silver from the layer during the next fixing process

Citation Download Citation

Yuri E. Usanov, Ye. A. Vavilova, N. L. Kosobokova, and Michail K. Shevtsov "Reflection silver-halide gelatin holograms", Proc. SPIE 1238, Three-Dimensional Holography: Science, Culture, Education, (1 February 1991); https://doi.org/10.1117/12.19391

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