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利用时域有限差分法,对横电波(TE波)激励带电介质的亚波长一维金属光栅的光场分布进行了模拟分析,发现TE波在所研究的模型下具有异常透射现象.探究其物理本质,确定类导模共振理论是第一个峰和第二个峰产生的主要原因.在此基础上,从麦克斯韦方程出发,通过有效折射率法,确定了类Fabry-Perot(F-P)腔谐振是产生第三个峰的主要原因.从而完善了TE波在所研究的模型下产生异常透射现象的物理本质.为进一步研究TE波异常透射性的物理本质提供了一种完整的理论依据.
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关键词:
- 金属光栅 /
- 横电波 /
- 异常透射 /
- 类Fabry-Perot腔谐振
The transmission distribution of transverse electric wave (TE) through one-dimensional metallic gratings with sub-wavelenghth slits with dielectric added in different positions has been simulated by the FDTD (finite difference time domain) method, the extraordinary transmission can be produced at several special wavelengths. The simulation shows that the guided-mode-like resonance theory is the main reason giving rise to the first peak and the second peak. Based on the guided-mode-like resonance theory, from the Maxwell’s equations,we nade sure that the Fabry Perot resonance is the main cause producing the third peak by the effective index mehod. In a word, the guided-mode resonance theory and the Fabry-Perot-like resonance reveal the physical nature of the extraordinary transmission phenomenon which provides a complete theoretical basis for further study of the extraordinary transmission phenomenon of TE-polarized wave.-
Keywords:
- metallic gratings /
- transverse electric-polarized wave /
- extraordinary transmission /
- Fabry-Perot-like resonance
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[24] Han M H, Dutton R W 2006 IEEE Microw. Wireless Compon.Lett. 16 3
[25] Palik E D(ed.) 1985 Handbook of Optical Constants of Solids (Orlando, FL: Academic Press)
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[1] Ebbesen T W, Lezec H J, GhaemiH F, Thio T, Wolff P A 1998 Nature 391 667
[2] Genet C, Ebbesen T W 2007 Nature 445 39
[3] Bai W L, Guo B S, Cai L K, Gan Q Q, Song G F 2009 Acta Phys. Sin. 58 8021 (in Chinese)[白文理、 郭宝山、 蔡利康、 甘巧强、 宋国峰 2009 58 8021]
[4] Wang Y Y, Zhang C H, Ma J L, Jin B B, Xu W W, Kang L, Chen J, Wu P H 2009 Acta Phys. Sin. 58 6884 (in Chinese)[王媛媛、 张彩虹、 马金龙、 金飙兵、 许伟伟、 康 琳、 陈 健、 吴培亨 2009 58 6884]
[5] Cai L, Li G Y, Wang Z H, Xu A S 2010 Opt.Lett. 35 127
[6] Przybilla F, Degiron A, Genet C, Ebbesen T W, Leon-Perez F D, Bravo-Abad J, García-Vidal F J, Martín-Moreno L 2008 Opt.Express 16 9571
[7] Treacy M M J 2002 Phys. Rev. B 66 195105
[8] Lee K G, Park Q H 2005 Phys. Rev. Lett. 95 103902
[9] Cao Q, Lalanne P 2002 Phys. Rev. Lett. 88 057403
[10] Xie Y, Zakharian A R, Moloney J V, Mansuripur M 2006 Opt. Express 14 6400
[11] Li C, Zhou Y S,Wang H Y,Wang F H 2010 J. Opt. Soc. Am. B 27 59
[12] Wu F Q, Han D Z, Li X, Liu X H 2008 Opt. Express 16 6619
[13] Belotelov V I, Doskolovich L L, Kotov V A, Bezus E A, Bykov D A, Zvezdin A K 2007 Opt. Coummun. 278 104
[14] Wurtz G A, Dickson W, Connor D O, Atkinson R, Hendren W, Evans P, Pollard R, Zayats A V 2008 Opt. Express 16 7460
[15] Garcia-Vidal F J, Martin-Moreno L 2002 Phys. Rev. B 66 155412
[16] Pendry J B, Martín-Moreno L, García-Vidal F J 2004 Science 305 847
[17] Wang Y W, Liu M L, liu R J,Lei H N,Deng X B 2010 Acta Phys. Sin. 59 0184 (in Chinese)[王亚伟、 刘明礼、 刘仁杰、 雷海娜、 邓晓斌 2010 59 0184]
[18] Taflove A, Hagness S C 2000 Computational Electrodynamics: The Finite-Difference Time-Domain Method(3rd ed)(Boston: Artech House) p236
[19] Moreno E, Martín-Moreno L, García-Vidal F J 2006 J.Opt. A: Pure Appl. Opt. 8 S94
[20] Yuan G H, Wang P, Zhang D G 2006 Proc.IEEE 7803 9774
[21] Yuan G H, Wang P, Zhang D G 2007 Chin. Phys. Lett. 24 1600
[22] Aleksandar D R, Aleksandra B D, Jovan M E, Marian L M 1998 Appl. Opt. 37 5271
[23] Young J L, Nelson R O 2001 IEEE Antennas Propag. Mag. 43 61
[24] Han M H, Dutton R W 2006 IEEE Microw. Wireless Compon.Lett. 16 3
[25] Palik E D(ed.) 1985 Handbook of Optical Constants of Solids (Orlando, FL: Academic Press)
[26] Tan C L,Yi Y X, Wang G P 2002 Acta Phys. Sin. 51 1063 (in Chinese)[谈春雷、 易永祥、 汪国平 2002 51 1063]
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