Chin. Phys. Lett.  2006, Vol. 23 Issue (2): 486-488    DOI:
Original Articles |
The Role of Periodicity in Enhanced Transmission through Subwavelength Hole Arrays
SUN Mei1;TIAN Jie1;LI Zhi-Yuan1;CHENG Bing-Ying1;ZHANG Dao-Zhong1;JIN Ai-Zi2;YANG Hai-Fang2
1Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080 2Laboratory of Micro Fabrication, Institute of Physics, Chinese Academy of Sciences, Beijing 100080
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SUN Mei, TIAN Jie, LI Zhi-Yuan et al  2006 Chin. Phys. Lett. 23 486-488
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Abstract Two kinds of subwavelength hole arrays in metallic films are designed to verify the important role of the periodicity in enhanced transmission of light. The measured optical spectra show that the quasiperiodic hole arrays exhibit an enhanced transmission peak centred at 707nm with a transmission intensity of about 20%, while no plasmon resonance peak is found for the amorphous hole arrays. When the hole diameter decreases in the quasiperiodic structure, the position of the transmission peak shifts slightly, and the transmittance drops. These phenomena indicate the important role of the long-range structural order (particularly the periodicity) in assisting the coupling of incident light wave with the surface plasmon modes of the metallic structures.
Keywords: 78.66.Bz      42.79.Dj      71.36.+c      73.20.Mf     
Published: 01 February 2006
PACS:  78.66.Bz (Metals and metallic alloys)  
  42.79.Dj (Gratings)  
  71.36.+c (Polaritons (including photon-phonon and photon-magnon interactions))  
  73.20.Mf (Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2006/V23/I2/0486
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SUN Mei
TIAN Jie
LI Zhi-Yuan
CHENG Bing-Ying
ZHANG Dao-Zhong
JIN Ai-Zi
YANG Hai-Fang
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