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| Presentation | 2008-12-20 09:00 [Invited Talk] Development of superconducting photonic devices operating in terahertz frequency range Iwao Kawayama, Yasushi Doda, Hironaru Murakami, Masayoshi Tonouchi (Osaka Univ.)  ED2008-191 Link to ES Tech. Rep. Archives: ED2008-191 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Ultrafast optical devices are strongly desired to process large-capacity data-traffic on expanding information networks. A superconductive electronic device with high Tc superconductor is an attractive candidate for an ultrafast signal processing with very low power consumption. We have discovered that the local superconducting current could be modulated by the illumination of femtosecond laser pulses. As a result, magnetic fluxes were generated around the laser spot. Such phenomena are not only interesting for fundamental physics concerning an optical excitation of quantized states but also important from a viewpoint of the development of ultrafast optical devices using magnetic fluxes. Recently, we have fabricated a novel superconducting photonic device based on a Josephson vortex flow transistor (JVFT) with an YBCO thin film, and investigated the optical properties of this type of device using an optical measurement system with a femtosecond laser. In this report, we introduce our approaches to realize the ultrafast optical devices and show the recent results of optical signal processing with JVFTs. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Superconducting Device / Optical Device / Optical Device / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 108, no. 369, ED2008-191, pp. 35-38, Dec. 2008. | |
| Paper # | ED2008-191 | |
| Date of Issue | 2008-12-12 (ED) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | ED2008-191 Link to ES Tech. Rep. Archives: ED2008-191 |
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| Conference Information | |
| Committee | ED |
| Conference Date | 2008-12-19 - 2008-12-20 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tohoku Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Millimeter-wave, THz-wave Devices and Systems |
| Paper Information | |
| Registration To | ED |
| Conference Code | 2008-12-ED |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Development of superconducting photonic devices operating in terahertz frequency range |
| Sub Title (in English) | |
| Keyword(1) | Superconducting Device |
| Keyword(2) | Optical Device |
| Keyword(3) | Optical Device |
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| 1st Author's Name | Iwao Kawayama |
| 1st Author's Affiliation | Osaka University (Osaka Univ.) |
| 2nd Author's Name | Yasushi Doda |
| 2nd Author's Affiliation | Osaka University (Osaka Univ.) |
| 3rd Author's Name | Hironaru Murakami |
| 3rd Author's Affiliation | Osaka University (Osaka Univ.) |
| 4th Author's Name | Masayoshi Tonouchi |
| 4th Author's Affiliation | Osaka University (Osaka Univ.) |
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| Speaker | Author-1 |
| Date Time | 2008-12-20 09:00:00 |
| Presentation Time | 40 minutes |
| Registration for | ED |
| Paper # | ED2008-191 |
| Volume (vol) | vol.108 |
| Number (no) | no.369 |
| Page | pp.35-38 |
| #Pages | 4 |
| Date of Issue | 2008-12-12 (ED) |
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