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Subject: search.filters.subject.PQ : PMMA

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Now showing 1 - 5 of 5
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    Experimental characterization of phenanthrenequinone-doped poly(methyl methacrylate) photopolymer for volume holographic storage
    (2003-05-01)
    Hsu, KY
    ;
    Lin, SH
    ;
    Hsiao, YN
    ;
    Whang, WT
    ;
    材料科學與工程學系
    We present an experimental study on the photopolymer poly(methyl methacrylate) doped with phenathrenequinone molecules. Material characteristics for holographic data storage, including optical characteristics, scattering effect, relation between diffraction efficiency and number of holograms, and exposure schedule for multiple storage, are investigated. An experimental demonstration of multiple storage of digital data pages in a polymer cube is presented. (C) 2003 Society of Photo-Optical Instrumentation Engineers.
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    Holographic data storage using photopolymer
    (1999)
    Hsu, KY
    ;
    Lin, SH
    ;
    Whang, WT
    ;
    Chen, WZ
    ;
    光電工程學系
    We present our studies on a photopolymer of poly(methyl methacrylate) (PMMA) doped with phenathrenequinone (PQ) molecules. We describe their characteristics for holographic data storage, including photo-sensitivity, material M/#, angular selectivity, dynamic exposure schedule, absorption and scattering effect. Experimental demonstrations on multiple digital data pages stored in a polymer cube are presented.
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    Temperature effect in PQ : PMMA photopolymer
    (2000)
    Lin, SH
    ;
    Hsu, KY
    ;
    電子物理學系
    ;
    Department of Electrophysics
    We present our studies on the temperature effect of the grating recorded in a phenathrenequinone (PQ) doped poly(methyl methacrylate) (PMMA) photopolymer. The characteristics for recording a strong single grating have been studied. We find that the main limitation of full utilization of the refractive index modulation of the hologram is caused by the scattering effect. Experimental demonstration of using dark enhancement to enhance diffraction efficiency of a grating is presented.
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    Item type:Item,
    Holographic data storage using photopolymer
    (2003)
    Hsu, KY
    ;
    Lin, SH
    ;
    光電工程學系
    ;
    Department of Photonics
    In this paper, we present investigations on holographic data storage using photopolymer of poly(methyl methacrylate) (PMMA) doped with phenathrenequinone (PQ) molecules. From the system specifications we derive the material parameters that are required for a data storage system. We present a technique of material preparation for obtaining samples with good optical quality. Then we present material characteristics for holographic data storage, including M/#, sensitivity, and material shrinkage. Experimental demonstration on digital data storage is presented and bit error rate is discussed.
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    Item type:Item,
    Doped PMMA photopolymer for volume holographic recording
    (2003)
    Lin, SH
    ;
    電子物理學系
    ;
    Department of Electrophysics
    In this paper, we report investigations on chemical analyses and optical measurements of our PQ doped PMMA photopolymer material. We have analyzed chemical compositions of four different samples: PQ doped PMMA solid and PQ dissolved MMA liquid samples, with light exposed and unexposed conditions, respectively. The investigations provide us a good understanding about the photochemical behaviors of the PQ and the MMA molecules during optical recording. Then, a mechanism for holographic recording is proposed. This result has been applied to develop photopolymers doped with different dye molecules. With changing of dye molecules, we have made three new PMMA-based photopolymers. Their holographic recording characteristics have been tested and discussed.