Ultrafast third-order optical nonlinearity of several sandwich-type phthalocyaninato and porphyrinato europium complexes
Huang Wen-Tao (黄文涛)a, Li Yan (李焱)a, Xiang Hong (向红)a, Yang Hong (杨宏)a, Gong Qi-Huang (龚旗煌)a, Huang Yan-Yi (黄岩谊)b, Huang Chun-Hui (黄春辉)b, Jiang Jian-Zhuang (姜建壮)c
a State Key Laboratory for Mesoscopic Physics and Department of Physics,Peking University, Beijing 100871, China; b State Key Laboratory of Rare Earth Material Chemistry and Application, College of Chemistry, Peking University, Beijing 100871, China; c Department of Chemistry, Shandong University, Jinan 250100, China
Abstract The third-order optical nonlinearity of two sandwich-type phthalocyaninato and porphyrinato europium complexes, including double- and triple-deckers Eu[Pc(OC5H11)8]2, Eu2(Pc)(TPP)2, Pc=phthalocyanine, TPP=5, 10, 15, 20- tetraphenylporphyrinate), was investigated by using the femtosecond time-resolved optical Kerr gate method at 830 nm wavelength. Their second-order hyperpolarizability is estimated to be 0.74×10-30esu and 3.0×10-30esu respectively. This exhibits an evident enhancement in comparison with 0.47×10-30esu for one-decker Eu(Pc)(acac) (acac=acetylacetonate), which is also measured under the same conditions. The enhancement is attributed to the introduction of lanthanide metal to the large \pi -conjugated system, intermacrocycle interaction and two-photon resonance etc.
Received: 04 March 2005
Revised: 11 April 2005
Accepted manuscript online:
(Optical properties of bulk materials and thin films)
Fund: Project supported by the National Key Research Program of China (Grant No TG1999075209) and the National Natural Science Foundation of China (Grant Nos 10434020, 90206003 and 60378012).
Cite this article:
Huang Wen-Tao (黄文涛), Li Yan (李焱), Xiang Hong (向红), Yang Hong (杨宏), Gong Qi-Huang (龚旗煌), Huang Yan-Yi (黄岩谊), Huang Chun-Hui (黄春辉), Jiang Jian-Zhuang (姜建壮) Ultrafast third-order optical nonlinearity of several sandwich-type phthalocyaninato and porphyrinato europium complexes 2005 Chinese Physics 14 2226
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