| 两种Ni(Ⅱ)配合物的合成及三阶非线性光学性能 |
| Synthesis and Third-Order Optical Nonlinearities of Two Nickel(Ⅱ) Complexes |
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| 摘要: 合成了两种新的Ni(Ⅱ)配合物，用UV、IR、MS和元素分析进行了表征。采用飞秒激光，运用简并四波混频法，研究了Ni(Ⅱ)配合物在非共振状态下的三阶非线性光学性能。它们的三阶非线性光学极化率χ(3)为3.21×10-13 esu和3.58×10-13 esu，非线性折射率n2为5.89×10-12 esu和6.58×10-12 esu，分子二阶超极化率γ为3.21×10-31 esu和3.57×10-31 esu，响应时间τ为54 fs和59 fs。探索了配合物的分子结构对三阶非线性光学性能的影响。结果表明具有大的高度离域的π电子共轭体系是获得较大三阶非线性光学性能的关键。 |
| 关键词: 非线性光学 简并四波混频 Ni(Ⅱ)配合物 合成 |
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| Abstract: Two new nickel(Ⅱ) complexes were synthesized and characterized by UV, IR, MS and elemental analysis. By using femtosecond laser, the off-resonant third-order optical nonlinearities of the complexes were measured with degenerate four-wave mixing technique. The third-order nonlinear optical susceptibilities χ(3) are 3.21×10-13 esu and 3.58×10-13 esu. The nonlinear refractive indexes n2 are 5.89×10-12 esu and 6.58×10-12 esu. The second-order hyperpolarizabilities γ of the molecules are 3.21×10-31 esu and 3.57×10-31 esu. The response times τ are 54 fs and 59 fs. The influence of the molecular structure on the third-order optical nonlinearity was studied. The results show that large and highly delocalized π-conjugated electron system is the key factor leading to the strong third-order optical nonlinearity. |
| Keywords: nonlinear optics degenerate four-wave mixing nickel(Ⅱ) complex synthesis |
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| 蔡志彬,周 茂.两种Ni(Ⅱ)配合物的合成及三阶非线性光学性能[J].无机化学学报,2011,27(12):2383-2388. |
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