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| Presentation | 2019-08-09 13:30 Construction of measurement system for radiation patterns of intrinsic-Josephson junction THz-wave oscillators Teppei Eguchi, Takashi Tachiki, Takashi Uchida (NDA)  SCE2019-14 Link to ES Tech. Rep. Archives: SCE2019-14 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | A radiation–pattern measurement system consisting of cryogenic horizontal and vertical rotators was constructed for measuring actual radiation patterns of intrinsic-Josephson-junction THz-wave oscillators. Although the rotators prevented a sample holder from cooling, a Bi2Sr2CaCu2O8+δ mesa was cooled down to 30 K near the operating temperature of the oscillator by connecting the holder to a cold head in a cryocooler through Cu-meshed wires. Moreover, for a voltage of 30 V applied to a piezo actuator in the horizontal rotator and a frequency of 200 Hz for stepping motion, the rotation speed decreased with decreasing in temperature. Under this condition for the applied voltage and step frequency, an interval between measured angles was 0.14 ° - 0.29 °, which are low enough to measure radiation patterns, in the range between 30 and 53 K. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Josephson Junctions / terahertz wave / oscillator / radiation pattern / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 119, no. 164, SCE2019-14, pp. 31-35, Aug. 2019. | |
| Paper # | SCE2019-14 | |
| Date of Issue | 2019-08-02 (SCE) | |
| 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 | SCE2019-14 Link to ES Tech. Rep. Archives: SCE2019-14 |
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| Conference Information | |
| Committee | SCE |
| Conference Date | 2019-08-09 - 2019-08-09 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | National Institute of Advanced Industrial Science and Technology |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Device, think film, etc. |
| Paper Information | |
| Registration To | SCE |
| Conference Code | 2019-08-SCE |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Construction of measurement system for radiation patterns of intrinsic-Josephson junction THz-wave oscillators |
| Sub Title (in English) | |
| Keyword(1) | Josephson Junctions |
| Keyword(2) | terahertz wave |
| Keyword(3) | oscillator |
| Keyword(4) | radiation pattern |
| Keyword(5) | |
| Keyword(6) | |
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| Keyword(8) | |
| 1st Author's Name | Teppei Eguchi |
| 1st Author's Affiliation | National Defense Academy (NDA) |
| 2nd Author's Name | Takashi Tachiki |
| 2nd Author's Affiliation | National Defense Academy (NDA) |
| 3rd Author's Name | Takashi Uchida |
| 3rd Author's Affiliation | National Defense Academy (NDA) |
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| Speaker | Author-1 |
| Date Time | 2019-08-09 13:30:00 |
| Presentation Time | 25 minutes |
| Registration for | SCE |
| Paper # | SCE2019-14 |
| Volume (vol) | vol.119 |
| Number (no) | no.164 |
| Page | pp.31-35 |
| #Pages | 5 |
| Date of Issue | 2019-08-02 (SCE) |
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