Large Optical Transmission through a Single Subwavelength Hole Associated with a Sharp-Apex Grating
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概要
- 論文の詳細を見る
The effect of grating shapes on optical transmission in a bull's eye structure (a single subwavelength hole surrounded by a concentric grating in a metal) is discussed. Finite-difference time-domain calculations predict that a sharp-apex shape gives as high a reflective structure to the propagating surface plasmon polaritons (SPPs) as does a rectangular shape. Fabricated samples with a sharp-apex grating actually show large optical transmission (a factor of 400 greater than that of samples with a single hole) even when the number of corrugations is three. This result indicates that a sharp-apex grating acts as an effective SPP reflector to confine the energy around the hole, resulting in high optical throughput.
- Japan Society of Applied Physicsの論文
- 2005-01-10
著者
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ISHI Tsutomu
Fundamental and Environmental Research Laboratories, NEC Corporation
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FUJIKATA Junichi
Fundamental and Environmental Research Laboratories, NEC Corporation
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Ohashi Keishi
Fundamental And Environmental Research Laboratories Nec Corporation
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Ishi Tsutomu
Fundamental and Environmental Research Laboratories, NEC Corporation, 34 Miyukigaoka, Tsukuba, Ibaraki 305-8501, Japan
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Fujikata Junichi
Fundamental and Environmental Research Laboratories, NEC Corporation, 34 Miyukigaoka, Tsukuba, Ibaraki 305-8501, Japan
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