| 颗粒形状对金属—绝缘体复合介质光学性质的影响 |
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| 引用本文： | 吴亚敏,陈国庆.颗粒形状对金属—绝缘体复合介质光学性质的影响[J].苏州大学学报(医学版),1999,15(4):81-85. |
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| 作者姓名： | 吴亚敏 陈国庆 |
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| 作者单位： | 无锡教育学院物理系!无锡，214063，无锡轻工大学数理研究所!无锡，214036 |
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| 摘 要： | 研究了退极化因子对金属－绝缘体复合介质中的线性光学吸收和非线性极化度的影响．利用退耦近似和谱表式相结合的方法研究退极化因子对有效非线性响应的影响，结果显示线性吸收系数和有效非线性极化率与颗粒的形状（对应退极化因子）有很大依赖关系。
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| 关 键 词： | 有效介电常数 吸收系数 非线性极化率 |
THE INFLUENCE OF PARTICLE SHAPE ON THE OPTICAL PROPERTIES IN METAL-DIELECTRICS COMPOSITES |
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| Wu Yamin.THE INFLUENCE OF PARTICLE SHAPE ON THE OPTICAL PROPERTIES IN METAL-DIELECTRICS COMPOSITES[J].Journal of Suzhou University(Natural Science),1999,15(4):81-85. |
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| Authors: | Wu Yamin |
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| Abstract: | The effects of depolarization factor on the optical properties including effective linear optical absorption and nonlinear susceptibility in the metal dielectrics composite media are investigated. A type of microstructures corresponding to those described by Effective Medium Approximation (EMA) are examined. By using decoupling approximation and spectral representation, we investigate the effect of the depolarization factor on effective nonlinear response. Numerical results show that the linear ab- sorption coefficient and the effective nonlinear susceptibility are strongly dependent on the depolariza- tion factor and thus on the shape of the inclusion. |
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| Keywords: | effective dielectric function absorption coefficient nonlinear susceptibility |
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