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Nonlinear Optical Properties of Novel Polymeric Rare Earth Phthalocyanine Studied Using Picosecond Z-Scan Technique |
| ZHAO Peng1;XU Song2;LI Zhong-Yu1,3;ZHANG Fu-Shi1 |
| 1The Key Lab of Organic Photoelectrons and Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 1000842Department of Application Technology, Northeast Dianli University, Jilin 1320123Department of Chemical and Material Engineering, Jilin Institute of Chemical Technology, Jilin 132022 |
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ZHAO Peng, XU Song, LI Zhong-Yu et al 2008 Chin. Phys. Lett. 25 2058-2061 |
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Abstract Three novel tri-dimensional phthalocyanine polymers, with lanthanum (LaPPc), gadolinium (GdPPc) and ytterbium (YbPPc) as centric atoms, have been synthesized from a tetranuclear phthalonitrile. Third-order optical nonlinearities of these compounds in DMF solution are measured by a picosecond Z-sacn technique at 532nm. It is found that all the compounds show reverse saturation absorption and nonlinear self-focus refraction effect. The second-order molecular hyperpolarizabilities are calculated to be 1.82×10-29, 1.48×10-29 and 1.45×-29 esu for LaPPc, GdPPc and YbPPc, respectively. The differences among their nonlinear optical properties are attributed to the special tri-dimensional structure and the variation in rare earth atoms.
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| Keywords:
42.65.An
42.70.Nq
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Received: 02 January 2008
Published: 31 May 2008
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| PACS: |
42.65.An
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(Optical susceptibility, hyperpolarizability)
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42.70.Nq
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(Other nonlinear optical materials; photorefractive and semiconductor materials)
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