| Presentation | 2010-07-29 Transmission characteristics of an annular aperture surrounded by periodic grooves in a metal film Junji YAMAUCHI, Tatsuya IGUCHI, Hisamatsu NAKANO, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | An annular aperture surrounded by concentric periodic grooves in a metal film is investigated using the body-of-revolution finite-difference time-domain method. First, a subwavelength annular aperture is analyzed. The transmission is strongly enhanced when the surface plasmon polariton is excited along the grooves. By choosing the optimum inner radius of the annular aperture, the transmission is increased compared to the conventional circular aperture. Addition of a Bragg reflector at the outermost circumference can further enhance the transmission by a factor of 1.4. Next, a relatively large annular aperture is analyzed, which can contribute to generation of a nondiffraction beam. The transmission which is 17 times greater than that observed without the grooves can be obtained by making the grooves both inside and outside the annular slit. Additionally, the Bragg reflector is introduced on the output surface. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | annular aperture / body-of-revolution finite-difference time-domain method / Bragg reflector / bull's eye structure / nondiffraction beam / surface plasmon polariton |
| Paper # | MW2010-49,OPE2010-34 |
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| Conference Information | |
| Committee | MW |
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| Conference Date | 2010/7/22(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Microwaves (MW) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Transmission characteristics of an annular aperture surrounded by periodic grooves in a metal film |
| Sub Title (in English) | |
| Keyword(1) | annular aperture |
| Keyword(2) | body-of-revolution finite-difference time-domain method |
| Keyword(3) | Bragg reflector |
| Keyword(4) | bull's eye structure |
| Keyword(5) | nondiffraction beam |
| Keyword(6) | surface plasmon polariton |
| 1st Author's Name | Junji YAMAUCHI |
| 1st Author's Affiliation | Faculty of Engineering, Hosei University() |
| 2nd Author's Name | Tatsuya IGUCHI |
| 2nd Author's Affiliation | Faculty of Engineering, Hosei University |
| 3rd Author's Name | Hisamatsu NAKANO |
| 3rd Author's Affiliation | Faculty of Engineering, Hosei University |
| Date | 2010-07-29 |
| Paper # | MW2010-49,OPE2010-34 |
| Volume (vol) | vol.110 |
| Number (no) | 155 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |