Chem. J. Chinese Universities

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Passive Optical Limiting Performance of Solid-State Polymer-Indium Phthalocyanine Composite Materials

LIU Ying1, CHEN Yu1*, FENG Miao1,3, LIN Ying1, Doyle J. J2, Blau W. J.2, CAI Liang-Zhen1*   

    1. Lab for Advanced Materials, Institute of Applied Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China;
    2. Materials Ireland Polymer Research Centre, Department of Physics, Trinity College Dublin, Dublin 2, Ireland;
    3. College of Materials Science and Engineering, Fuzhou University, Fuzhou 350002, China
  • Received:2007-04-17 Revised:1900-01-01 Online:2007-11-10 Published:2007-11-10
  • Contact: CHEN Yu

Abstract: Optical limiting, an important application of nonlinear optics, useful for the protection of human eyes and optical sensors from intense laser pulse, is of great inertest to the private industry, law enforcement and military. In this paper, indium phthalocyanine-based polymer solid-state passive optical limiters were fabricated by embedding the phthalocyanine as inclusion in poly(methylmethylacrylate) host. These composite films exhibit an enhanced nonlinear optical response and lower saturable fluence for optical limiting in comparison to the same Pc molecules in solution. All open aperture Z-scans performed at 532 nm display a decrease in transmittance about the focus which is typical for an induced positive nonlinear absorption of incident light due to reverse saturable excited state absorption.

Key words: Indium phthalocyanines, Solid state composite material, Optical limiting performance, Poly(methylmethylacrylate)

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