Establishment and Applications of High-power Superconducting Coherent Terahertz Sources

• Project/Area Number: 26790032
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Nano/Microsystems
• Research Institution: University of Tsukuba (2015); Kyoto University (2014)
• Principal Investigator: TSUJIMOTO MANABU 筑波大学, 数理物質系, 助教 (20725890)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2014: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
• Keywords: 高温超伝導体 / ジョセフソン効果 / テラヘルツ波 / 温度分布イメージング / パッケージング / 超伝導 / 銅酸化物高温超伝導体 / テラヘルツ / 連続光源

Outline of Final Research Achievements

To enhance the emission power of the CW terahertz sources using intrinsic Josephson junctions in cuprate high-temperature superconductors, we investigate the universal relationship between the hot-spot size and the intensity of terahertz radiation by dynamically controlling the surface temperature distributions. We used a florescent technique to directly image temperature distributions of the emitting sources. We find a strong positive correlation between the emission intensity and the volume of the superconducting parts, and that we can increase emission intensity considerably by preventing the excessive heating that increases hot-spot size. This finding allows for the construction of powerful sources capable of emitting intense terahertz waves.

Research Products

• [Journal Article] Cavity mode identification for coherent terahertz emission from high-Tc superconductors (2016)
  • Author(s): M. Tsujimoto, I. Kakeya, T. Kashiwagi, H. Minami, and K. Kadowaki
  • Journal Title: Optics Express Volume: 24 Issue: 5 Pages: 4591-4599
  • DOI: 10.1364/oe.24.004591
  • Peer Reviewed / Open Access
• [Journal Article] A high- Tc intrinsic Josephson junction emitter tunable from 0.5 to 2.4 terahertz (2015)
  • Author(s): T. Kashiwagi, K. Sakamoto, H. Kubo, Y. Shibano, T. Enomoto, T. Kitamura, K. Asanuma, T. Yasui, C. Watanabe, K. Nakade, Y. Saiwai, T. Katsuragawa, M. Tsujimoto, R. Yoshizaki, T. Yamamoto, H. Minami, R. A. Klemm, and K. Kadowaki
  • Journal Title: Applied Physics Letters Volume: 107 Issue: 8
  • DOI: 10.1063/1.4929715
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Terahertz emission from a stack of intrinsic Josephson junctions in Pb-doped Bi2Sr2CaCu2O8+δ (2015)
  • Author(s): M. Tsujimoto, Y. Maeda, H. Kambara, A. Elarabi, Y. Yoshioka, Y. Nakagawa, Y. Wen, T. Doi, H. Saito, and I. Kakeya
  • Journal Title: Superconductor Science and Technology Volume: 28 Issue: 10 Pages: 105015-105015
  • DOI: 10.1088/0953-2048/28/10/105015
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Efficient Fabrication of Intrinsic-Josephson-Junction Terahertz Oscillators with Greatly Reduced Self-Heating Effects (2015)
  • Author(s): T. Kashiwagi, T. Yamamoto, H. Minami, M. Tsujimoto, R. Yoshizaki, K. Delfanazari, T. Kitamura, C. Watanabe, K. Nakade, T. Yasui, K. Asanuma, Y. Saiwai, Y. Shibano, T. Enomoto, H. Kubo, K. Sakamoto, T. Katsuragawa, B. Markovic, J. Mirkovic, R. A. Klemm, and K. Kadowaki
  • Journal Title: Physical Review Applied Volume: 4 Issue: 5
  • DOI: 10.1103/physrevapplied.4.054018
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] 高温超伝導体からのコヒーレントな連続テラヘルツ波の発生 (2015)
  • Author(s): 辻本学
  • Journal Title: 京都大学低温物質科学研究センター誌 Volume: 27 Pages: 10-18
  • NAID: 120005825913
  • Peer Reviewed / Open Access
• [Journal Article] Dynamic control of temperature distributions in stacks of intrinsic Josephson junctions in Bi2Sr2CaCu2O8+δ for intense terahertz radiation (2014)
  • Author(s): M. Tsujimoto, H. Kambara, Y. Maeda, Y. Yoshioka, Y. Nakagawa, and I. Kakeya
  • Journal Title: Phys. Rev. Applied Volume: 2 Issue: 4
  • DOI: 10.1103/physrevapplied.2.044016
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Imaging of local temperature distributions in mesas of high-Tc superconducting terahertz sources (2014)
  • Author(s): M. Tsujimoto, H. Kambara, Y. Maeda, Y. Yoshioka, Y. Nakagawa, and I. Kakeya
  • Journal Title: J. Phys.: Conf. Ser. Volume: 568 Issue: 2 Pages: 022048-022048
  • DOI: 10.1088/1742-6596/568/2/022048
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Bi-2223固有ジョセフソン接合を使ったテラヘルツ発振の検証 (2016)
  • Author(s): 辻本学，斉藤寛，土居卓司，温一凡，Asem Elarabi，掛谷一弘，足立伸太郎，渡辺孝夫
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 東北学院大学（宮城県仙台市）
  • Year and Date: 2016-03-22
• [Presentation] 高廃熱構造を用いた固有ジョセフソン接合系Bi2212テラヘルツ発振素子の発振特性III (2016)
  • Author(s): 柏木隆成，北村健郎，渡辺千春，柴野雄紀，幸良彦，榎本拓真，久保裕之，坂本和輝，桂川拓也，湯浅拓実，田中大河，小守優貴，辻本学，山本卓，吉崎亮造，南英俊，門脇和男
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 東北学院大学（宮城県仙台市）
  • Year and Date: 2016-03-22
• [Presentation] 高温超伝導体Bi2212を用いたテラヘルツ波光源のパッケージ化 (2016)
  • Author(s): 土居卓司，辻本学，Elarabi Asem，温一凡，掛谷一弘
  • Organizer: 第63回応用物理学会春季学術講演会
  • Place of Presentation: 東京工業大学（東京都目黒区）
  • Year and Date: 2016-03-20
• [Presentation] 高温超伝導体単結晶Bi2Sr2CaCu2O8+δを用いた正方形型単独メサ構造からのTHz波発振特性II (2016)
  • Author(s): 久保裕之，柏木隆成，坂本和輝，北村健郎，渡邊千春，幸良彦，柴野雄紀，桂川拓也，田中大河，湯浅拓実，小守優貴，榎本拓真，辻本学，山本卓，南英俊，門脇和男
  • Organizer: 第63回応用物理学会春季学術講演
  • Place of Presentation: 東京工業大学（東京都目黒区）
  • Year and Date: 2016-03-19
• [Presentation] 高温超伝導体Bi2212テラヘルツ光源の多機能化 (2016)
  • Author(s): 掛谷一弘，エララビアセム，温一凡，土居卓司，辻本学
  • Organizer: 第63回応用物理学会春季学術講演会
  • Place of Presentation: 東京工業大学（東京都目黒区）
  • Year and Date: 2016-03-19
• [Presentation] Terahertz emission from a stack of intrinsic Josephson junctions in Bi2Sr2Ca2Cu3O10+δ (2016)
  • Author(s): M. Tsujimoto, I. Kakeya, S. Adachi, T. Watanabe, T. Kashiwagi, H. Minami, and K. Kadowaki
  • Organizer: 2016 American Physical Society March Meeting
  • Place of Presentation: Baltimore, Maryland, USA
  • Year and Date: 2016-03-16
  • Int'l Joint Research
• [Presentation] A high Tc superconducting terahertz emitter operated from 0.5 to 2.4 THz (2016)
  • Author(s): T. Kashiwagi, K. Sakamoto, H. Kubo, Y. Shibano, T. Enomoto, T. Kitamura, K. Asanuma, T. Yasui, C. Watanabe, K. Nakade, Y. Saiwai, T. Katsuragawa, T. Tanaka, T. Yuasa, M. Tsujimoto, R. Yoshizaki, T. Yamamoto, H. Minami, R.A. Klemm, and K. Kadowaki
  • Organizer: 2016 American Physical Society March Meeting
  • Place of Presentation: Baltimore, Maryland, USA
  • Year and Date: 2016-03-16
  • Int'l Joint Research
• [Presentation] 高温超伝導体を使ったコヒーレントな連続テラヘルツ光源の開発 (2015)
  • Author(s): 辻本学，斉藤寛，土居卓司，温一凡，Asem Elarabi，掛谷一弘
  • Organizer: 第14回低温工学・超伝導若手合同講演会
  • Place of Presentation: 大阪市立大学文化交流センター（大阪府大阪市）
  • Year and Date: 2015-12-11
• [Presentation] Bi-2212固有ジョセフソン接合テラヘルツ発振におけるストライプ状微細発振構造に関する考察 (2015)
  • Author(s): 辻本学，斉藤寛，土居卓司，温一凡，Asem Elarabi，掛谷一弘
  • Organizer: 第23回渦糸物理国内会議
  • Place of Presentation: 休暇村志賀島（福岡県福岡市）
  • Year and Date: 2015-12-09
• [Presentation] Bi2Sr2CaCu2O8+δ固有ジョセフソン接合からのテラヘルツ波発生におけるストライプ状微細発振構造の起源 (2015)
  • Author(s): 辻本学，斉藤寛，土居卓司，温一凡，Asem Elarabi，掛谷一弘，Fabian Rudau，Raphael Wieland，Reinhold Kleiner
  • Organizer: 日本物理学会2015年秋季大会
  • Place of Presentation: 関西大学（大阪府吹田市）
  • Year and Date: 2015-09-18
• [Presentation] Bi2Sr2CaCu2O8+δ固有ジョセフソン接合からのコヒーレントな連続テラヘルツ波発生 (2015)
  • Author(s): 辻本学，掛谷一弘
  • Organizer: 京都大学基礎物理学研究所研究会「多自由度と相関効果が生み出す超伝導の新潮流～BCSからBECまで～」
  • Place of Presentation: 京都大学（京都府京都市）
  • Year and Date: 2015-06-09
• [Presentation] Bi2Sr2CaCu2O8+固有ジョセフソン接合メサ構造における温度分布の動的制御とテラヘルツ発振の同時観測 (2015)
  • Author(s): 辻本学，神原仁志，岸本卓也，温一凡，吉岡佑介，中川裕也，秋山弘樹，卞舜生，為ヶ井強，Fabian Rudau，Raphael Wieland，Reinhold Kleiner，掛谷一弘
  • Organizer: 日本物理学会第70回年次大会
  • Place of Presentation: 早稲田大学
  • Year and Date: 2015-03-24
• [Presentation] Dynamic control of temperature distributions in stacks of intrinsic Josephson junctions for intense terahertz emission (2015)
  • Author(s): M. Tsujimoto, H. Kambara, T. Kishimoto, Y. Wen, Y. Yoshioka, Y. Nakagawa, and I. Kakeya
  • Organizer: 6th international workshop on Optical Terahertz Science and Technology
  • Place of Presentation: アメリカ カリフォルニア州 サンディエゴ
  • Year and Date: 2015-03-11
• [Presentation] 高温超伝導体を使った連続可変な小型テラヘルツ光源の開発 (2015)
  • Author(s): 辻本学，吉岡佑介，温一凡，岸本卓也，斉藤寛，中川裕也，掛谷一弘
  • Organizer: 応用物理学会関西支部平成２６年度第３回講演会「関西発グリーンエレクトロニクス研究の進展」
  • Place of Presentation: 奈良先端科学技術大学院大学
  • Year and Date: 2015-02-27
• [Presentation] Terahertz emission from a stack of intrinsic Josephson junctions in Pb-doped Bi-2212 (2014)
  • Author(s): M. Tsujimoto, H. Kambara, Y. Maeda, Y. Yoshioka, Y. Nakagawa, and I. Kakeya
  • Organizer: 9th International Symposium on Intrinsic Josephson Effects and THz Plasma Oscillations in High-Tc Superconductors
  • Place of Presentation: 京都大学
  • Year and Date: 2014-12-02
• [Presentation] Dynamic control of temperature distributions in stacks of intrinsic Josephson junctions in Bi2Sr2CaCu2O8+δ for intense terahertz radiation (2014)
  • Author(s): M. Tsujimoto, H. Kambara, Y. Maeda, Y. Yoshioka, Y. Nakagawa, B. Gross, F. Rudau, R. Kleiner, and I. Kakeya
  • Organizer: 9th International Symposium on Intrinsic Josephson Effects and THz Plasma Oscillations in High-Tc Superconductors
  • Place of Presentation: 京都大学
  • Year and Date: 2014-12-01
  • Invited
• [Presentation] Bi2Sr2CaCu2O8+δ固有ジョセフソン接合を用いた超伝導テラヘルツ光源の開発 (2014)
  • Author(s): 辻本学、神原仁志、吉岡佑介、中川裕也、F. Rudau、B. Gross、R. Kleiner、掛谷一弘
  • Organizer: 第75回応用物理学会秋季学術講演会
  • Place of Presentation: 北海道大学
  • Year and Date: 2014-09-18
  • Invited
• [Presentation] Imaging of local temperature distributions in mesas of high-Tc superconducting terahertz sources (2014)
  • Author(s): M. Tsujimoto, Y. Nakagawa, Y. Yoshioka, Y. Kamei, Y. Maeda, and I. Kakeya
  • Organizer: 27th International Conference on Low Temperature Physics
  • Place of Presentation: アルゼンチン ブエノスアイレス
  • Year and Date: 2014-08-04
• [Remarks] 京都大学ホームページ 研究成果
  • URL: http://www.kyoto-u.ac.jp/ja/research/research_results/2014/141022_1.html
• [Patent(Industrial Property Rights)] テラヘルツ帯電磁波発振装置 (2015)
  • Inventor(s): 辻本学，掛谷一弘
  • Industrial Property Rights Holder: 京都大学
  • Industrial Property Rights Type: 特許
  • Filing Date: 2015-12-17