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Proceedings Paper

Comparison of experimental approaches to study selective properties of thick phase-amplitude holograms recorded in materials with diffusion-based formation mechanisms
Author(s): Vladimir Borisov; Mariia Klepinina; Andrey Veniaminov; Aleksandr Angervaks; Aleksandr Shcheulin; Aleksandr Ryskin
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Paper Abstract

Volume holographic gratings, both transmission and reflection-type, may be employed as one-dimensional pho- tonic crystals. More complex two- and three-dimensional holographic photonic-crystalline structures can be recorded using several properly organized beams. As compared to colloidal photonic crystals, their holographic counterparts let minimize distortions caused by multiple inner boundaries of the media. Unfortunately, it’s still hard to analyze spectral response of holographic structures. This work presents the results of thick holographic gratings analysis based on spectral-angular selectivity contours approximation. The gratings were recorded in an additively colored fluorite crystal and a glassy polymer doped with phenanthrenequinone (PQ-PMMA). The two materials known as promising candidates for 3D diffraction optics including photonic crystals, employ diffusion-based mechanisms of grating formation. The surfaces of spectral-angular selectivity were obtained in a single scan using a white-light LED, rotable table and a matrix spectrometer. The data expressed as 3D plots make apparent visual estimation of the grating phase/amplitude nature, noninearity of recording, etc., and provide sufficient information for numerical analysis. The grating recorded in the crystal was found to be a mixed phase-amplitude one, with different contributions of refractive index and absorbance modulation at different wavelengths, and demonstrated three diffraction orders corresponding to its three spatial harmonics originating from intrinsically nonlinear diffusion-drift recording mechanism. Contrastingly, the grating in the polymeric medium appeared purely phase and linearly recorded.

Paper Details

Date Published: 21 April 2016
PDF: 9 pages
Proc. SPIE 9885, Photonic Crystal Materials and Devices XII, 98851P (21 April 2016); doi: 10.1117/12.2231120
Show Author Affiliations
Vladimir Borisov, ITMO Univ. (Russian Federation)
Mariia Klepinina, ITMO Univ. (Russian Federation)
Andrey Veniaminov, ITMO Univ. (Russian Federation)
Aleksandr Angervaks, ITMO Univ. (Russian Federation)
Aleksandr Shcheulin, ITMO Univ. (Russian Federation)
Aleksandr Ryskin, ITMO Univ. (Russian Federation)

Published in SPIE Proceedings Vol. 9885:
Photonic Crystal Materials and Devices XII
Dario Gerace; Gabriel Lozano; Christelle Monat; Sergei G. Romanov, Editor(s)

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