Broadband generation and detection of terahertz waves by nonlinear metamaterials

• Project/Area Number: 16H06025
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Plasma science
• Research Institution: Shinshu University (2017-2018); Osaka University (2016)
• Principal Investigator: Takano Keisuke 信州大学, 先鋭領域融合研究群環境・エネルギー材料科学研究所, 助教(特定雇用) (70583102)
• Project Period (FY): 2016-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥19,890,000 (Direct Cost: ¥15,300,000、Indirect Cost: ¥4,590,000); Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2016: ¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
• Keywords: テラヘルツ波 / メタマテリアル / 非線形光学 / プラズモニクス / テラヘルツ波工学 / プラズマ科学 / テラヘルツ波光源

Outline of Final Research Achievements

This research aimed to understand develop applications of the non-linear electromagnetic phenomena in metamaterials and develop the electromagnetic applications. Broadband terahertz pulses are generated from metallic nanostructures irradiated with intense ultra-short laser pulses. In this study, it is revealed that the tunneling current driven by intense laser fields enhanced by the nanostructures is the source of the broadband terahertz pulses. The broadband terahertz waves can be extremely confined and absorbed in the metallic self-complementary checkerboard patterns. The quantum conductance is observed in the metallic nanoparticles, in which the atomic movements are driven by the terahertz pulses confined in the vicinity of the metallic structures.

Academic Significance and Societal Importance of the Research Achievements

広帯域テラヘルツ波光源になりうる金属ナノ構造の光応答の起源を明らかにした。さらに広帯域なテラヘルツ波発生も期待できる。その他、本研究で見出した広帯域に電磁波とナノ構造を相互作用させる手法や、強いテラヘルツ波による金属構造の変化は、メタマテリアルの新たな機能設計に寄与する。

Research Products

• [Int'l Joint Research] University of Nizhny Novgorod(ロシア連邦)
• [Journal Article] Terahertz emission from gold nanorods irradiated by ultrashort laser pulses of different wavelengths (2019)
  • Author(s): K. Takano, M. Asai, K. Kato, H. Komiyama, A. Yamaguchi, T. Iyoda, Y. Tadokoro, M. Nakajima, M. I. Bakunov
  • Journal Title: Scientific Reports Volume: 9 Issue: 1 Pages: 3280-3280
  • DOI: 10.1038/s41598-019-39604-5
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Quantized conductance observed during sintering of silver nanoparticles by intense terahertz pulses editors-pick (2018)
  • Author(s): Keisuke Takano, Hirofumi Harada, Masashi Yoshimura, and Makoto Nakajima
  • Journal Title: Appl. Phys. Lett. Volume: 112 Issue: 16 Pages: 163102-163102
  • DOI: 10.1063/1.5022706
  • Peer Reviewed
• [Journal Article] 金属チェッカーボードフィルムの臨界電磁応答とそのテラヘルツ波応答 (2018)
  • Author(s): 中田陽介，浦出芳郎，高野恵介
  • Journal Title: 応用物理 Volume: 87 Pages: 187-192
• [Journal Article] Significant Volume Expansion as a Precursor to Ablation and Micropattern Formation in Phase Change Material Induced by Intense Terahertz Pulses (2018)
  • Author(s): Makino Kotaro、Kato Kosaku、Takano Keisuke、Saito Yuta、Tominaga Junji、Nakano Takashi、Isoyama Goro、Nakajima Makoto
  • Journal Title: Scientific Report Volume: 8 Issue: 1
  • DOI: 10.1038/s41598-018-21275-3
  • Peer Reviewed
• [Journal Article] Energy loss of terahertz electromagnetic waves by nano-sized connections in near-self-complementary metallic checkerboard patterns (2017)
  • Author(s): Takano Keisuke、Tanaka Yoku、Moreno Gabriel、Chahadih Abdallah、Ghaddar Abbas、Han Xiang-Lei、Vaurette Francois、Nakata Yosuke、Miyamaru Fumiaki、Nakajima Makoto、Hangyo Masanori、Akalin Tahsin
  • Journal Title: Journal of Applied Physics Volume: 122 Issue: 6 Pages: 063101-063101
  • DOI: 10.1063/1.4997882
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] 金属インク上に自発的に形成される複雑なナノ構造からのテラヘルツ波放射 (2017)
  • Author(s): 加藤康作、高野恵介、田所譲、ファン・タンニャ・コア、中嶋誠
  • Journal Title: レーザー研究 Volume: 45 Pages: 153-157
  • NAID: 130007957375
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Terahertz wave generation from spontaneously formed nanostructures (2016)
  • Author(s): K. Kato, K. Takano, Y. Tadokoro, and M. Nakajima
  • Journal Title: Opt. Lett Volume: 41 Issue: 9 Pages: 2125-2125
  • DOI: 10.1364/ol.41.002125
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Development of metamaterial structures for THz frequency conversion devices (2018)
  • Author(s): Y. Akamine, D. Bulgarevich, K. Yamamoto, T. Furuya, H. Kitahara, J. Afalla, V. Mag-usara, K. Takano, K. N. T. Phan, K. Kato, M. Nakajima, M. Tani
  • Organizer: 2018 43rd International Conference on Infrared Millimeter and Terahertz Waves (IRMMW-THz 2018)
  • Int'l Joint Research
• [Presentation] Broadband terahertz wave absorption in self-complementary and non-self-complementary patterns (2018)
  • Author(s): K. Takano, K. Hanai, M. Yoshimura, M. Nakajima, and F. Miyamaru
  • Organizer: Progress In Electromagnetics Research Symposium (PIERS 2018 Toyama)
  • Int'l Joint Research / Invited
• [Presentation] Properties of terahertz wave emission from nano-porous gold excited by femtosecond laser pulses (2018)
  • Author(s): K. Kato, T. Kashihara, T. N. K. Phan, K. Takano, M. Akbari, T. Ishihara, M. Yoshimura, M. Nakajima
  • Organizer: 2018 43rd International Conference on Infrared Millimeter and Terahertz Waves (IRMMW-THz 2018)
  • Int'l Joint Research
• [Presentation] Terahertz pulse generation from metal nanostructures (2018)
  • Author(s): 高野恵介
  • Organizer: 第8回電磁メタマテリアルシンポジウム
  • Invited
• [Presentation] Terahert generation from split ring resonator array fabricated from silver nano-particles (2017)
  • Author(s): K. T. N. Khoa, 加藤康作、高野恵介、吉村政志、疇地宏、中嶋誠
  • Organizer: 第64回応用物理学会春季学術講演会
  • Place of Presentation: パシフィコ横浜
  • Year and Date: 2017-03-14
• [Presentation] 高強度テラヘルツ波パルス照射による共鳴アンテナ近傍金属ナノ粒子の電気伝導変化 (2017)
  • Author(s): 高野恵介，原田寛史，吉村政志，中嶋誠
  • Organizer: 第66回高分子討論会
  • Invited
• [Presentation] Sintering metallic nanoparticles with intense terahertz pulses (2017)
  • Author(s): K. Takano, H. Harada, M. Yoshimura, and M. Nakajima
  • Organizer: MTSA2017 & TeraNano8
  • Int'l Joint Research
• [Presentation] Enhanced Terahertz Emission from Micro Structure Fabricated from Silver Nanoparticles (2017)
  • Author(s): K. N. T. Phan, K. Kato, K. Takano, M. Yoshimura, H. Azechi, and M. Nakajima
  • Organizer: The 6th Advanced Lasers and Photon Sources (ALPS'17)
  • Int'l Joint Research
• [Presentation] Terahertz pulse generation from metal nanoparticle ink (2016)
  • Author(s): K. Kato, K. Takano, Y. Tadokoro, K. N. T. Phan, M. Nakajima
  • Organizer: SPIE/COS Photonics Asia
  • Place of Presentation: Beijing, China
  • Year and Date: 2016-10-12
  • Int'l Joint Research / Invited
• [Presentation] 抵抗接続金属メッシュのブロードバンドテラヘルツ応答 (2016)
  • Author(s): 花井研一郎、原田寛史、高野恵介、吉村政志、中嶋誠
  • Organizer: 第77回応用物理学会秋季学術講演会
  • Place of Presentation: 朱鷺メッセ
  • Year and Date: 2016-09-13
• [Presentation] 高強度テラヘルツ電場による銀ナノ粒子の接合 (2016)
  • Author(s): 原田寛史、高野恵介、吉村政志、中嶋誠
  • Organizer: 第77回応用物理学会秋季学術講演会
  • Place of Presentation: 朱鷺メッセ
  • Year and Date: 2016-09-13
• [Presentation] Terahertz radiation from nano-porous gold by irradiation of femtosecond laser pulses (2016)
  • Author(s): T. Kashihara, K. Kato, K. Takano, M. Akubari, T. Ishihara, M. Yoshimura, and M. Nakajima
  • Organizer: The First A3 Metamaterials Forum
  • Place of Presentation: Sendai, Japan
  • Year and Date: 2016-07-05
  • Int'l Joint Research
• [Presentation] Characterization and manipulation of artificial structures by terahertz waves (2016)
  • Author(s): K. Takano
  • Organizer: International Workshop on Molecular Functioning and Dynamics in Excited States
  • Place of Presentation: National Chiao Tung University, Taiwan
  • Int'l Joint Research / Invited
• [Remarks] Keisuke TAKANO research activity
  • URL: https://sites.google.com/site/ksktakra/