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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/28350

    Title: Two-photon absorption and optical power limiting properties in femtosecond regime of novel multi-branched chromophores based on tri-substituted olefinic scaffolds
    Authors: Lin,TC;Chen,YF;Hu,CL;Hsu,CS
    Contributors: 中央大學
    Date: 2009
    Issue Date: 2010-06-29 19:46:46 (UTC+8)
    Publisher: 化學研究所
    Abstract: Two new multi-branched model fluorophores based on tri-substituted olefinic skeletons had been synthesized and their degenerate two-photon absorption properties were characterized by ultra-short laser pulses in the femtosecond regime. The experimental results show that the studied chromophore structures exhibit relatively strong and wide-dispersed two-photon activities in the near infra-red (NIR) regime. It is demonstrated that molecular structures with expanded pi-frameworks derived from multi-substituted olefin moieties would possess large molecular nonlinear absorptivities within the studied spectral region. Two-photon absorption based optical power limiting behaviors in the femtosecond time domain of these model compounds were also explored and the results indicate that such a structural motif could be a useful molecular design approach towards strong two-photon absorbing material systems for quick-responsive and broadband optical-suppressing related applications, especially when against ultra-short laser pulses.
    Appears in Collections:[化學研究所] 期刊論文

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