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共振光学天线场增强特性的研究
  • ISSN号：0479-8023
  • 期刊名称：《北京大学学报：自然科学版》
  • 时间：0
  • 分类：O436[机械工程—光学工程;理学—光学;理学—物理]
  • 作者机构：[1]北京大学物理学院、人工微结构和介观物理国家重点实验室,北京100871
  • 相关基金：国家自然科学基金（10521002和10434020）,国家重点基础研究发展计划（2007CB307001）和高等学校博士学科点专项科研基金（20040001012）资助项目
作者： 颜海峰[1], 杨景[1], 吴晓飞[1], 张家森[1]
关键词： 光学共振天线, 表面等离激元, 时域有限差分方法, resonant optical antennas, surface plasmons, finite-difference time-domain
中文摘要：

利用有限时域差分方法计算和分析了天线形状、臂长、衬底等对纳米尺度下的光学天线场分布和场增强的影响。在915nm处共振时，梯形对称振子天线的场增强因子为1739，比长方形对称振子天线的增强因子1076要大；天线臂长的减小，使得共振波长蓝移。当单个振子长度为80nm时，玻璃衬底的引入使天线共振峰从587nm红移至715nm，并使场分布偏向衬底。

英文摘要：

The finite-difference time-domain method is used to calculate the electronic field distribution and enhancement factor of nano-scale optical antennas for different shape, length and substrates. When the resonant wavelength is 915 nm, the antenna with symmetry echelon dipoles has an enhancement factor of 1 739, which is greater than the enhancement factor of 1 076 of the antenna with symmetry rectangle dipoles. The resonant wavelength has a blue-shift when the length of the antenna is decreased. With a glass substrate, the resonant peak of the antenna with a length of the dipole of 80 nm red-shifts from 587 nm to 715 nm and the electric field distribution inclines to the substrate.

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期刊信息
  • 《北京大学学报：自然科学版》
  • 中国科技核心期刊
  • 主管单位:教育部
  • 主办单位:北京大学
  • 主编：赵光达
  • 地址：北京海淀区海淀路52号
  • 邮编：100871
  • 邮箱：xbna@pku.edu.cn
  • 电话：010-62756706
  • 国际标准刊号：ISSN：0479-8023
  • 国内统一刊号：ISSN：11-2442/N
  • 邮发代号:2-89
  • 获奖情况:
  • 1997年第二届全国优秀科技期刊评比一等奖,1999年教育部“优秀自然科学学报一等奖”,1999年获首届国家期刊奖,中国期刊方阵“双高”期刊
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  • 被引量:18270