| 超短脉冲在纳米金属缝中的传输特性 |
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| 引用本文： | 张美娜,滕树云,程传福.超短脉冲在纳米金属缝中的传输特性[J].山东师范大学学报(自然科学版),2009,24(1):46-48. |
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| 作者姓名： | 张美娜 滕树云 程传福 |
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| 作者单位： | 山东师范大学物理与电子科学学院,250014,济南 |
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| 基金项目： | 国家自然科学基金，山东省优秀中青年科学家科研奖励基金 |
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| 摘 要： | 根据Drude模型和时域有限差分法（FDTD）编制程序包，通过模拟计算研究超短脉冲经纳米金属缝衍射的时域信号的分布特性．讨论了透射脉冲的时域分布与超短脉冲有效驰豫时间的演化关系，借助于其谱域分布对时域波形进行了解释．
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| 关 键 词： | Drude模型 时域有限差分法 超短脉冲 |
THE CHARACTER OF ULTRASHORT PULSE PROPAGATION IN SUBWAVELENGTH METALLIC SLITS |
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| Zhang Meina,Teng Shuyun,Cheng Chuanfu.THE CHARACTER OF ULTRASHORT PULSE PROPAGATION IN SUBWAVELENGTH METALLIC SLITS[J].Journal of Shandong Normal University(Natural Science),2009,24(1):46-48. |
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| Authors: | Zhang Meina Teng Shuyun Cheng Chuanfu |
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| Institution: | (College of Physics and Electronics, Shandong Normal University, 250014, Jinan, China) |
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| Abstract: | According to the model of Drude and the finite difference time domain （FDTD）method, the calculation programme for the transmission of the nanometer structure with the ultrashort pulsed laser illumination is accomplished. When the ultrashort pulsed laser goes through the subwavelength metallic slits, the transmission characteristics of the pulsed light wave are discussed. Through the numerical calculations, the temporal waveform of the transmission signal is obtained, and the split phenomenon of the transmission waveform is found, which is changed with the duration of the incident pulse. Recurring to the Fourier transform relationship of the temporal signal and its spectrum, we give the explanation of these characteristics of the temporal distribution of the transmission signal. |
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| Keywords: | the model of Drude finite - difference - time - domain （FDTD） ultrashort pulsed laser |
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