Proceedings of Topical Meeting on Optoinformatics (pdf-format, 1.21 ...

SAINT-PETERSBURG, October 17 – 20, 2005 35
HIGH-EFFECTIVE MULTIPLEX HOLOGRAMS IN VOLUME
POLYMER MEDIA
O.V. Andreeva, A.P. Kushnarenko*, B.B. Lesnichij**, A.P. Nacharov**,
A.A. Paramonov**
S.I. Vavilov State Optical Institute, 12 Birzhevaya linija, St. Petersburg, Russia, 197198
*Saint-Petersburg State University, 1, Uljanovskaja str., Petrodvorets, St. Petersburg,
Russia, 198504
**Saint-Petersburg State University <strong>of</strong> Information Technology, Mechanics and Optics,
49 Kronverkskij ave., St. Petersburg, Russia, 197101
E-mail: ali@phoi.ifmo.ru, kushnarenko@front.ru
At present paper the technique developed for record <strong>of</strong> high-effective
superposed holograms in polymer medium “Difphen” is reported. The results
<strong>of</strong> investigation <strong>of</strong> hologram that was obtained by means <strong>of</strong> angular
multiplexing with technology developed are presented. The possibilities <strong>of</strong>
such holograms usage for information storage and producing <strong>of</strong> elements with
special properties based on regular and fractal structures are shown.
At the last time because <strong>of</strong> tremendous growth <strong>of</strong> optical information technologies
the interest to high-resolution holographic recording media also increases. Volume
holography suggests effective methods for storage, transformation and processing <strong>of</strong> huge
volume <strong>of</strong> data. The development <strong>of</strong> that area is impossible without development <strong>of</strong>
technologies for recording media engineering and methods <strong>of</strong> hologram producing. On the
other hand, interest to recording media is maintained by the fact that there is the possibility
to apply holographic media for creation <strong>of</strong> metamaterials or left-handed materials i.e.
structurally organized substance with properties that are unusual for conventional natural
materials [1] .
The polymeric recording medium with post-exposure amplification “Difphen” [2] (on
basis <strong>of</strong> phenanthroquinone) was developed at the S.I. Vavilov Optical Institute and
possesses the number <strong>of</strong> peculiarities: high resolution (more 5000 mm -1 ), high value <strong>of</strong>
phase modulation, ability to record interference patterns without distortions within wide
dynamic range, stability <strong>of</strong> performance attributes.
Polymeric media on basis <strong>of</strong> phenanthroquinone have well-known abilities <strong>of</strong>
recording <strong>of</strong> a large number <strong>of</strong> superposed holograms. Here holograms, recorded on the
same area <strong>of</strong> the sample, are subjected to post-exposure treatment simultaneously and have
small value <strong>of</strong> efficiency. When low-effective superposed holograms are recorded, the
dynamic range <strong>of</strong> material allows to record a large number <strong>of</strong> holograms with identical
characteristics. But it is impossible to use this way for recording <strong>of</strong> superposed identical
holograms with diffraction efficiency close to 100% since changes <strong>of</strong> spatial distribution <strong>of</strong>
light-sensitive substrate concentration after recording <strong>of</strong> each hologram.