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利用镀银膜的四面锥尖实现纳米尺度聚焦光斑的数值模拟
引用本文:姜宇驰,李亚琴,王晓秋,吴世法.利用镀银膜的四面锥尖实现纳米尺度聚焦光斑的数值模拟[J].电子显微学报,2006,25(4):333-336.
作者姓名:姜宇驰  李亚琴  王晓秋  吴世法
作者单位:1. 大连理工大学,辽宁,大连,116023;常熟理工学院,江苏,常熟,222500
2. 大连理工大学,辽宁,大连,116023
3. 大连大学,辽宁,大连,116023
基金项目:辽宁省教育厅教育科技计划
摘    要:利用(FD)^2TD方法对全镀金属膜四面锥尖端近场的光增强分布进行了数值模拟,结果表明在平行光束从全镀金属膜四面锥底面入射条件下,尖端近场可以获得纳米尺度的聚焦光斑,并且光场可以得到较大的增强。

关 键 词:四面锥尖  半高宽  聚焦光斑
文章编号:1000-6281(2006)04-0333-04
收稿时间:2006-04-15
修稿时间:2006-04-152006-06-06

Numerical simulation of pyramdal tip entirely coated with Ag film with focusing spot at nanometer scale
JIANG Yu-chi,LI Ya-qin,WANG Xiao-qiu,WU Shi-fa.Numerical simulation of pyramdal tip entirely coated with Ag film with focusing spot at nanometer scale[J].Journal of Chinese Electron Microscopy Society,2006,25(4):333-336.
Authors:JIANG Yu-chi  LI Ya-qin  WANG Xiao-qiu  WU Shi-fa
Affiliation:1 Department of physics,Dalian University of Technology, Dalian Liaoning 116023; 2 Department of physics and electronics science, Changshu Insitute of Technology, Changshu Jiangsu 222500; 3 Dalian University, Dalian Liaoning 116023, China
Abstract:The electric field distribution for pyramdial tip entirely coated with Ag film was simulated with(FD)~2TD method.The results indicate that the tip of this geometry can not only produce focusing spot at nanometer scale but also engender enormous field enhancement under the excitation of plane wave from the base of pyramidal tip.
Keywords:FDTD
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