| Transformation of Sign of Nonlinear Refraction between Mo（W）/S/Cu Planar Metal Clusters |
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| 引用本文： | 张旺,宋瑛林,王玉晓,常青,张弛,忻新泉.Transformation of Sign of Nonlinear Refraction between Mo（W）/S/Cu Planar Metal Clusters[J].中国物理快报,2008,25(2):532-535. |
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| 作者姓名： | 张旺 宋瑛林 王玉晓 常青 张弛 忻新泉 |
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| 作者单位： | [1]Department of Physics, Harbin Institute of Technology, Harbin 150001 [2]College of Electronic Engineering, Heilongjiang University, Harbin 150080 [3]State Key Laboratory of Coordination Chemistry, Department of Chemistry, Nanjing University, Nanjing 210093 |
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| 基金项目： | Supported by the Programme for New Century Excellent Talents in University （NCET-04-0333）, the Excellent Youth Fund of Heilongjiang Province under Grant No JC-04-04, and the Heilongjiang Province Science Foundation under Grant No F2004-08. |
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| 摘 要： | Optical nonlinear refractive properties of a series of Mo（W）/S/Cu planar square clusters are investigated using the Z-scan technique with the ns laser pulses at the wavelength of 532 nm. The result shows that the planar metal clusters containing the halogen ligands demonstrate the self-focusing effect, and the other planar metal dusters demonstrate the self-defocusing effect. These facts indicate that the halogen ligands can act as crucial factors in determining the sign of the nonlinear refraction of the Mo（W）/S/Cu planar metal clusters. The analysis of the experimental data shows that the planar clusters with halogen ligands possess greater refraction volume of the excited state than that of the ground state, while the other planar clusters possess the smaller refraction volume of the excited state than that of the ground state.
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| 关 键 词： | 激光脉冲 波长 非线性折射 钼/硫/铜金属片 |
| 收稿时间： | 2007-11-09 |
Transformation of Sign of Nonlinear Refraction between Mo(W)/S/Cu Planar Metal Clusters |
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| ZHANG Wang,SONG Ying-Lin,WANG Yu-xiao,CHANG Qing,ZHANG Chi,XIN Xin-Quan.Transformation of Sign of Nonlinear Refraction between Mo(W)/S/Cu Planar Metal Clusters[J].Chinese Physics Letters,2008,25(2):532-535. |
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| Authors: | ZHANG Wang SONG Ying-Lin WANG Yu-xiao CHANG Qing ZHANG Chi XIN Xin-Quan |
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| Affiliation: | Department of Physics, Harbin Institute of Technology, Harbin 150001College of Electronic Engineering, Heilongjiang University, Harbin 150080State Key Laboratory of Coordination Chemistry, Department of Chemistry, Nanjing University, Nanjing 210093 |
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| Abstract: | Optical nonlinear refractive properties of a series of Mo(W)/S/Cu planar square clusters are investigated using the Z-scan technique with the ns laser pulses at the wavelength of 532nm. The result shows that the planar metal clusters containing the halogen ligands demonstrate the self-focusing effect, and the other planar metal clusters demonstrate the self-defocusing effect. These facts indicate that the halogen ligands can act as crucial factors in determining the sign of the nonlinear refraction of the Mo(W)/S/Cu planar metal clusters. The analysis of the experimental data shows that the planar clusters with halogen ligands possess greater refraction volume of the excited state than that of the ground state, while the other planar clusters possessthe smaller refraction volume of the excited state than that of the ground state. |
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| Keywords: | 42 65 Jx 42 65 Hw 42 70 Nq |
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