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Proceedings Paper

Convertible holograms in CaF2 crystals with color centers
Author(s): Alexandr E. Angervaks; Aleksandr S. Shcheulin; Aleksandr I. Ryskin
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Paper Abstract

When recording hologram in ionic CaF2 crystal with color centers, the center conversion is accompanied with their spatial redistribution. The peculiar diffusion-drift mechanism of the recording is responsible for the extremely high hologram stability to both heating and illumination of the sample with a hologram by non-coherent radiation. However such photo-thermal treatment of the sample results in partial or total transformation of the center type and modification in their space distribution. Thus, keeping the hologram, such treatment influences its character of diffraction response, diffraction efficiency and profile. This work describes the mechanism and the character of these changes. It is shown that photo-thermal treatment can be used for fabrication of thick (up to 10 mm thickness) high stable holograms when reading out both in visible and infrared ranges of the spectrum.

Paper Details

Date Published: 8 May 2013
PDF: 9 pages
Proc. SPIE 8776, Holography: Advances and Modern Trends III, 877604 (8 May 2013); doi: 10.1117/12.2017160
Show Author Affiliations
Alexandr E. Angervaks, National Research Univ. of Information Technologies, Mechanics and Optics (Russian Federation)
Aleksandr S. Shcheulin, National Research Univ. of Information Technologies, Mechanics and Optics (Russian Federation)
Aleksandr I. Ryskin, National Research Univ. of Information Technologies, Mechanics and Optics (Russian Federation)


Published in SPIE Proceedings Vol. 8776:
Holography: Advances and Modern Trends III
Miroslav Hrabovský; John T. Sheridan; Antonio Fimia-Gil, Editor(s)

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