| Presentation | 2004/10/15 Design and Fabrication of High-Q Photonic-Crystal Nanocavity Yoshihiro AKAHANE, Takashi ASANO, Bong-Shik SONG, Susumu NODA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, a photonic nanocavity with a calculated modal volume V of 0.71(λ_0/n)^3 (where λ_0 is the wavelength of light in air) and an ultrahigh experimental Q factor of 100,000, is demonstrated. We discovered an important new design rule, that the envelope function of the mode profile in the cavity should gently vary whilst remaining spatially localized, and utilized this in the design of the cavity structure. Accordingly, we propose a point-defect cavity in a two-dimensional photonic crystal slab, where the arrangement of six air holes near the cavity edges is fine-tuned. Using the 3D FDTD method, we demonstrate that the Q factor for the designed cavity increases by a factor of 50 relative to that for a cavity without displaced air holes, while the modal volume remains almost constant. By measurement of the radiation spectrum from the fabricated point-defect cavity and the transmission spectrum through a waveguide near the defect, we demonstrate that the Q factor of the designed cavity increases by a factor of 20. Q/V for this structure is significantly higher than for any other previously reported nanocavity. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Photonic Crystals / Optical Resonators / Nanocavities / Quality Factor / Fourier Transforms |
| Paper # | ED2004-144,CPM2004-118,LQE2004-82 |
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| Conference Information | |
| Committee | CPM |
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| Conference Date | 2004/10/15(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Component Parts and Materials (CPM) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Design and Fabrication of High-Q Photonic-Crystal Nanocavity |
| Sub Title (in English) | |
| Keyword(1) | Photonic Crystals |
| Keyword(2) | Optical Resonators |
| Keyword(3) | Nanocavities |
| Keyword(4) | Quality Factor |
| Keyword(5) | Fourier Transforms |
| 1st Author's Name | Yoshihiro AKAHANE |
| 1st Author's Affiliation | Department of Electronic Science and Engineering, Kyoto University:Semiconductor R&D Laboratories, Sumitomo Electric Industries, Ltd.() |
| 2nd Author's Name | Takashi ASANO |
| 2nd Author's Affiliation | Department of Electronic Science and Engineering, Kyoto University |
| 3rd Author's Name | Bong-Shik SONG |
| 3rd Author's Affiliation | Department of Electronic Science and Engineering, Kyoto University |
| 4th Author's Name | Susumu NODA |
| 4th Author's Affiliation | Department of Electronic Science and Engineering, Kyoto University |
| Date | 2004/10/15 |
| Paper # | ED2004-144,CPM2004-118,LQE2004-82 |
| Volume (vol) | vol.104 |
| Number (no) | 360 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |