NDLI: Improvement of the diffraction efficiency of isotropic and anisotropic gratings in Fulgide film by auxiliary light

Content Provider	IEEE Xplore Digital Library
Author	Ming Cheng Menke, Neimule Yao, Baoli Wang, Yingli Chen, Yi
Copyright Year	2011
Description	Author affiliation: School of Physical Science and Technology, Inner Mongolia Universtiy, Huhhot, 010021, China (Ming Cheng; Menke, Neimule; Yao, Baoli; Wang, Yingli; Chen, Yi)
Abstract	No matter during the ordinary holograph recording process in photochromic media, or during the polarization holograph recording process in photoinduced anisotropy media, there exits an overshooting peak in the diffraction efficiency, which then decays to a lower permanent level or also to zero, because of the diminishing of fringe contrast caused by a photochemically active readout beam, unequal intensities of object and reference waves and the nonlinear saturation effects of photoisomerization process and photoinduced anisotropy process. It is known that in ordinary holograph recording, this decreasing process can be eliminated by illuminating the hologram with a uniform control beam that has the effect of molecular back-conversion photo chrome. It was found that in polarization holograph recording, this method also can be used. Experiments done with an ordinary hologram and a polarization hologram recorded in a bistable state photochromic 3-indoly-benzylfulgimide/PMMA film at 633 nm have shown that a control beam at 405 nm can increase the stable-state diffraction efficiency, thus, allowing to decrease the rigorous requirements on the recording time, the object reference ratio and the reading beam intensity in the holographic recording. And the theoretical qualitative analyses are also given.
Starting Page	6047
Ending Page	6052
File Size	584868
Page Count	6
File Format	PDF
ISBN	9781424491728
e-ISBN	9781424491711
DOI	10.1109/RSETE.2011.5965734
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-24
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Integrated circuits Polarization hologram Polarization Diffraction efficiency Anisotropic magnetoresistance Fulgimide Diffraction Films Ordinary hologram Measurement by laser beam Auxiliary light Laser beams
Content Type	Text
Resource Type	Article

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