Study on Holographic Diffraction Properties in Dye-doped Nematic Liquid Crystals

We measured the diffraction efficiency in porphyrin:Zn doped nematic liquid crystals by using a two beam coupling experiment under the influence of an applied dc field. The maximum diffraction efficiency of eta = 38.7% was obtained with a writing beam intensity of 207 mW/cm 2 and an electric field o...

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Bibliographic Details
Main Authors: Kim, E.J., Yang, H.R., Kim, G.Y., Park, S.Y., Kwak, C.H.
Format: Conference Proceeding
Language:English
Subjects:
Diffraction gratings
Equations
Holography
Indium tin oxide
Laser beams
Liquid crystals
Optical coupling
Photorefractive materials
Space charge
Writing
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Summary:We measured the diffraction efficiency in porphyrin:Zn doped nematic liquid crystals by using a two beam coupling experiment under the influence of an applied dc field. The maximum diffraction efficiency of eta = 38.7% was obtained with a writing beam intensity of 207 mW/cm 2 and an electric field of 1.28 V / mum.
DOI:10.1109/CLEOPR.2007.4391331