| 一组Dawson型多金属氧酸盐和相应的有机-无机杂多化合物的超快非线性光学响应 |
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| 引用本文： | 向红,龚旗煌,高丽华,王科志,丛杨.一组Dawson型多金属氧酸盐和相应的有机-无机杂多化合物的超快非线性光学响应[J].原子与分子物理学报,2012,29(6):897-902. |
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| 作者姓名： | 向红 龚旗煌 高丽华 王科志 丛杨 |
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| 作者单位： | 重庆大学物理学院,北京大学物理学院,北京工商大学化学与环境学院,北京师范大学化学系,重庆大学物理学院 |
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| 摘 要： | 通过时间分辨率为115fs的超快光克尔方法测量了多金属氧酸盐K8P2Mo4W13M(H2O)O61] (M=Mn, Co, Ni, Cu, Zn)和相应的有机-无机杂多化合物(C19H25N2)7K3P2Mo4W13MO62]在830nm处的三阶非线性光学性质。多金属氧酸盐阴离子和相应的杂多化合物都表现出很大的三阶非线性，其中M=Cu的取代物的非线性系数要比其他小一个数量级。通过比较有机-无机杂多化合物和生成前者的反应物的值，发现杂多化合物中的电荷转移效应极大的增强了三阶非线性光学性能。
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| 关 键 词： | 三阶非线性光学性质，Dawson型，杂多化合物 |
The Ultrafast Third-order Nonlinear Optical Response of some Dawson Polyoxometalates and Their Organic-inorganic Hybrid Compounds |
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| Institution: | College of Physics Chongqing University,Physics School of Peking University,School of Chemical and Environmental Engineering, Beijing Technology and Business University,Department of Chemistry, Beijing Normal University,College of Physics Chongqing University |
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| Abstract: | The third-order optical nonlinearities of the polyoxometalates of K8P2Mo4W13M(H2O)O61] (M=Mn, Co, Ni, Cu, Zn) and their organic-inorganic hybrid compounds of (C19H25N2)7K3P2Mo4W13MO62] were measured by using ultrafast optical Kerr effect at 830nm wavelength, with time resolution of 115fs. Both of the polyoxometalates anions and the heteropoly compounds showed large third-order optical nonlinearity except the copper substituted one, which is one order of magnitude smaller than the others. By comparing the values of the organic-inorganic hybrid compounds and that of their reactants, it is concluded that the charge-transfer remarkably enhanced the third-order optical nonlinearities of the hybrid compounds. |
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| Keywords: | third-order optical nonlinearity Dawson hybrid |
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