Interference of Photon Emitted by a Slit–Groove Structure after the Conversion of Photon to Surface Plasmons
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概要
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We report on an observation of an interference pattern from a slit–groove structure that was fabricated in a Au film. Although we had not used a double-slit, a Young-like interference pattern was observed. The origin of the interference pattern can be attributed to the fact that one cannot distinguish between the photon reemitted from the slit and that reemitted from the groove after the conversion of the photon to surface plasmons (SPs). We have investigated the modulation of the fringe visibility by varying the geometric parameters (slit–groove distance and depth of the grooves) in order to explore the properties of SPs. In our experiment, a visibility of 24% was obtained in the case of a slit–groove distance of 9.7 μm and a groove depth of 120 nm.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2009-06-25
著者
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Takahashi Yuta
Institute of Quantum Science, Nihon University, 1-8-14 Kanda-Surugadai, Chiyoda, Tokyo 101-8308, Japan
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Mori Shigehiko
Institute of Quantum Science, Nihon University, 1-8-14 Kanda-Surugadai, Chiyoda, Tokyo 101-8308, Japan
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Hasegawa Keisuke
Institute of Quantum Science, Nihon University, 1-8-14 Kanda-Surugadai, Chiyoda, Tokyo 101-8308, Japan
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Segawa Toshiya
Institute of Quantum Science, Nihon University, 1-8-14 Kanda-Surugadai, Chiyoda, Tokyo 101-8308, Japan
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Inoue Shuichiro
Institute of Quantum Science, Nihon University, 1-8-14 Kanda-Surugadai, Chiyoda, Tokyo 101-8308, Japan
関連論文
- Optical Transmission Properties of Subwavelength Slit Structures in Visible Wavelength Range
- Interference of Photon Emitted by a Slit–Groove Structure after the Conversion of Photon to Surface Plasmons
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