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Profile of a volume hologram in CaF 2 crystal with color centers as determined using confocal scanning microscopy

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Abstract

The profile of an amplitude-phase volume holographic grating recorded in an additively colored calcium fluoride crystal is reconstructed from the spatial distribution of luminescence intensity in a thin layer of the grating with the use of a confocal scanning microscope. In agreement with the previously established mechanism of hologram recording in ionic crystals with color centers, the grating profile appears nonsinusoidal; the spatial distribution of luminescence intensity can be approximated by the sum of three spatial harmonics with the ratio of amplitudes 100:50:19. Almost the same ratio is obtained from the analysis of the angular dependencies of the diffraction at the three first harmonic components of the grating.

©2012 Optical Society of America

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