TY - JOUR
T1 - Strong influence of surface structures on enhanced transmission through subwavelength hole arrays
AU - Ishihara, Kunihiko
AU - Ohashi, Keishi
PY - 2005
Y1 - 2005
N2 - We analyzed the influence of the surface structure on enhanced transmission through subwavelength hole arrays. The hole arrays show extremely large enhanced transmission, but the transmission rapidly decreases as the hole diameter decreases. To clarify the cause of the transmission decrease, we calculated the dimple arrays and found that the diameter of the dimple strongly influences the efficiency of surface plasmon polaritons (SPPs) excitation. We show that the addition of the optimized surface structure to conventional hole arrays for the efficient SPP excitation leads to strongly enhanced transmission in much smaller diameter holes than the incident light wavelength.
AB - We analyzed the influence of the surface structure on enhanced transmission through subwavelength hole arrays. The hole arrays show extremely large enhanced transmission, but the transmission rapidly decreases as the hole diameter decreases. To clarify the cause of the transmission decrease, we calculated the dimple arrays and found that the diameter of the dimple strongly influences the efficiency of surface plasmon polaritons (SPPs) excitation. We show that the addition of the optimized surface structure to conventional hole arrays for the efficient SPP excitation leads to strongly enhanced transmission in much smaller diameter holes than the incident light wavelength.
KW - Enhanced transmission
KW - FDTD
KW - Finite-difference time-domain method
KW - Hole arrays
KW - Periodic structure
KW - Subwavelength hole
KW - Surface plasmon polariton
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U2 - 10.1143/JJAP.44.L973
DO - 10.1143/JJAP.44.L973
M3 - Article
AN - SCOPUS:30344471065
SN - 0021-4922
VL - 44
SP - L973-L975
JO - Japanese Journal of Applied Physics, Part 2: Letters
JF - Japanese Journal of Applied Physics, Part 2: Letters
IS - 28-32
ER -