| Presentation | 2019-08-09 Construction of measurement system for radiation patterns of intrinsic-Josephson junction THz-wave oscillators Teppei Eguchi, Takashi Tachiki, Takashi Uchida, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(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) |
| Keyword(in English) | Josephson Junctions / terahertz wave / oscillator / radiation pattern |
| Paper # | SCE2019-14 |
| Date of Issue | 2019-08-02 (SCE) |
| Conference Information | |
| Committee | SCE |
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| Conference Date | 2019/8/9(1days) |
| 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. |
| Chair | Satoshi Kohjiro(AIST) |
| Vice Chair | |
| Secretary | (Yokohama National Univ.) |
| Assistant | Hiroyuki Akaike(Daido Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Superconductive Electronics |
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| Language | JPN |
| 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 |
| 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) |
| Date | 2019-08-09 |
| Paper # | SCE2019-14 |
| Volume (vol) | vol.119 |
| Number (no) | SCE-164 |
| Page | pp.pp.31-35(SCE), |
| #Pages | 5 |
| Date of Issue | 2019-08-02 (SCE) |