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ヘテロダインTHz-CT/分光システムの開発

Research Project

Project/Area Number 15J04444
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section国内
Research Field Optical engineering, Photon science
Research InstitutionNagoya University

Principal Investigator

村手 宏輔  名古屋大学, 工学研究科, 特別研究員(DC1)

Project Period (FY) 2015-04-24 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2017: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2016: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2015: ¥1,200,000 (Direct Cost: ¥1,200,000)
Keywordsテラヘルツ波 / 非線形光学 / 分光システム / 分光イメージング / パラメトリック発生 / 広帯域波長可変テラヘルツ光源 / 広帯域波長可変光源
Outline of Annual Research Achievements

昨年までにヘテロダインTHz-CT/分光システムを開発し、実際にプラスチック製品の3D-CT画像や遮蔽物下の分光イメージングを実現したが、is-TPGが波長可変光源ゆえに1パルスで1波長しか出力できず、分光する際に波長を掃引するため、測定時間が長かった。そこで昨年度からis-TPGの多波長化を推し進めており、波長可変を無くすことで、高速測定を目指してきた。今年度は、実際に分光イメージングに導入すると共に、高安定化、極微弱光の検出を目指したテラヘルツ波の高利得増幅装置開発を行った。
is-TPGは励起光と注入光をLiNbO3結晶に入射することでテラヘルツ波を発生する。本研究では、多波長注入光を用い、5波長テラヘルツ波の同時発生を行った。EMS(Express Mail Service)封筒に隠蔽された糖類の分光イメージングを行ったところ、測定時間が従来のis-TPGに比べて5分の1に短縮されたにも関わらず、各試薬の分布の画像化に成功し、大幅な高速化が実現した。
次に、発生するテラヘルツ波をサンプル側とレファレンス側の2ビームに分割して、常時校正を取る方式を導入した。3波長発生時において安定性の向上を確認したところ、パルス間のゆらぎだけでなく、長期的な出力変動も無視することが可能となった。
他方、吸収ロスの大きなサンプルを透過した極微弱テラヘルツ波を検出するために、高利得テラヘルツ波増幅器も開発した。従来のテラヘルツ波増幅器では、雑音成分がパラメトリック利得により増幅されて、極微弱なテラヘルツ波増幅を邪魔していた。それを今回、増幅用結晶を1個から2個に増やし、その間にアイリスを用いて雑音成分のみを空間的に除去することで、所望の成分のみ2個目の結晶で増幅可能となり、-100dB程度減衰した極微弱テラヘルツ波入力に対し、20億倍以上と極めて高い増幅度を得ることが出来た。

Research Progress Status

29年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

29年度が最終年度であるため、記入しない。

Report

(3 results)
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • Research Products

    (37 results)

All 2018 2017 2016 2015 Other

All Int'l Joint Research (1 results) Journal Article (10 results) (of which Peer Reviewed: 8 results,  Acknowledgement Compliant: 3 results,  Open Access: 2 results) Presentation (25 results) (of which Int'l Joint Research: 15 results,  Invited: 5 results) Book (1 results)

  • [Int'l Joint Research] Ecole de technologie superieure(カナダ)

    • Related Report
      2017 Annual Research Report
  • [Journal Article] Effective Terahertz Wave Parametric Generation Depending on the Pump Pulse Width Using a LiNbO3 Crystal2017

    • Author(s)
      Nawata Kouji、Hayashi Shinichiro、Ishizuki Hideki、Murate Kousuke、Imayama Kazuki、Takida Yuma、Yahia Vincent、Taira Takunori、Kawase Kodo、Minamide Hiroaki
    • Journal Title

      IEEE Transactions on Terahertz Science and Technology

      Volume: 7 Issue: 5 Pages: 617-620

    • DOI

      10.1109/tthz.2017.2725479

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] テラヘルツ波分光イメージングの応用可能性2017

    • Author(s)
      村手宏輔, 加藤三樹矢, 川瀬晃道
    • Journal Title

      日本赤外線学会誌

      Volume: 27 Pages: 23-28

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Multiwavelength terahertz-wave parametric generator for one-pulse spectroscopy2017

    • Author(s)
      K. Murate, S. Hayashi, K. Kawase
    • Journal Title

      Applied Physics Express

      Volume: 10 Issue: 3 Pages: 032401-032401

    • DOI

      10.7567/apex.10.032401

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Expansion of the tuning range of injection-seeded terahertz-wave parametric generator up to 5 THz2016

    • Author(s)
      K. Murate, S. Hayashi, K. Kawase
    • Journal Title

      Applied Physics Express

      Volume: 9 Issue: 8 Pages: 082401-082401

    • DOI

      10.7567/apex.9.082401

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] THz Spectroscopic Imaging of Chemicals Using IS-TPG2016

    • Author(s)
      K. Murate, M. Kato, K. Kawase
    • Journal Title

      International Journal of High Speed Electronics and Systems

      Volume: 25 Issue: 03n04 Pages: 1640016-1640016

    • DOI

      10.1142/s0129156416400164

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Non-Destructive Inspection of Illicit Drugs Concealed in Mail Envelopes2016

    • Author(s)
      山崎良, 加藤三樹矢, 村手 宏輔, 今山和樹, 川瀬 晃道
    • Journal Title

      Journal of the Japan Society for Precision Engineering

      Volume: 82 Issue: 3 Pages: 217-220

    • DOI

      10.2493/jjspe.82.217

    • NAID

      130005131180

    • ISSN
      0912-0289, 1882-675X
    • Related Report
      2016 Annual Research Report
  • [Journal Article] Non-destructive drug inspection in covering materials using a terahertz spectral imaging system with injection-seeded terahertz parametric generation and detection2016

    • Author(s)
      Mikiya Kato, Saroj R. Tripathi, Kosuke Murate, Kazuki Imayama, Kodo Kawase
    • Journal Title

      Optics Express

      Volume: 24 Issue: 6 Pages: 6425-6432

    • DOI

      10.1364/oe.24.006425

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Terahertz wave three-dimensional computed tomography based on injection-seeded terahertz wave parametric emitter and detector2016

    • Author(s)
      Saroj R. Tripathi, Yuya Sugiyama, Kosuke Murate, Kazuki Imayama, Kodo Kawase
    • Journal Title

      Optics Express

      Volume: 24 Issue: 6 Pages: 6433-6440

    • DOI

      10.1364/oe.24.006433

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 光注入型テラヘルツ波パラメトリック光源の開発とその応用2015

    • Author(s)
      村手宏輔, 林伸一郎, 縄田耕二, 南出泰亜, 川瀬晃道
    • Journal Title

      フォトニクスニュース

      Volume: 1 Pages: 33-38

    • Related Report
      2015 Annual Research Report
  • [Journal Article] High power terahertz wave generation via non-linear optical processes2015

    • Author(s)
      Saroj R. Tripathi, Kosuke Murate, Kodo Kawase
    • Journal Title

      Asian Journal of Physics

      Volume: 24 Pages: 363-368

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed
  • [Presentation] 極微弱光の高利得テラヘルツ波パラメトリック増幅2018

    • Author(s)
      村手宏輔, 前田一樹, 郭昀倬, 川瀬晃道
    • Organizer
      第65回応用物理学会春季学術講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 多波長同時テラヘルツ波パラメトリック波長変換による1パルス分光システム2017

    • Author(s)
      村手宏輔, 林伸一郎, 川瀬晃道
    • 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, 神奈川
    • Year and Date
      2017-03-14
    • Related Report
      2016 Annual Research Report
  • [Presentation] 2波長発振テラヘルツ波パラメトリック光源の開発2017

    • Author(s)
      村手宏輔, 林伸一郎, 川瀬晃道
    • Organizer
      レーザー学会学術講演会第37回年次大会
    • Place of Presentation
      徳島大学常三島キャンパス, 徳島
    • Year and Date
      2017-01-07
    • Related Report
      2016 Annual Research Report
  • [Presentation] Simultaneous Generation and Detection of Multi-wavelength Terahertz Waves by Parametric Wavelength Conversion2017

    • Author(s)
      K. Murate, K. Maeda, S. Hayashi, K. Kawase
    • Organizer
      The 6th Advanced Lasers and Photon Sources (ALPS’17)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Multiwavelength THz Wave Generation From THz Parametric Generator2017

    • Author(s)
      K. Murate, K. Maeda, S. Hayashi, K. Kawase
    • Organizer
      Nonlinear Optics 2017 (NLO 2017)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] One Pulse Spectroscopic System Using Multiwavelength is-TPG2017

    • Author(s)
      K. Murate, K. Maeda, S. Hayashi, K. Kawase
    • Organizer
      The 42st International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2017)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] High dynamic range spectroscopic system using terahertz parametric generator2017

    • Author(s)
      K. Murate, K. Maeda, K. Kawase
    • Organizer
      Terahertz Science and Technology The Mansion Meeting
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] テラヘルツ波パラメトリック光源の多波長発振における不安定性2016

    • Author(s)
      村手宏輔, 林伸一郎, 川瀬晃道
    • Organizer
      二期第7回(第20回)「レーザーのカオス・ノイズダイナミックスとその応用」研究会
    • Place of Presentation
      官公労共済会八重山会館, 沖縄
    • Year and Date
      2016-11-21
    • Related Report
      2016 Annual Research Report
  • [Presentation] THz spectroscopic imaging of chemicals using is-TPG2016

    • Author(s)
      K. Kawase, M. Kato, K. Murate
    • Organizer
      5th Russia-Japan-USA-Europe Symposium on Fundamental & Applied Problems of Terahertz Devices & Technologies (RJUSE TeraTech-2016)
    • Place of Presentation
      Sakura Hall, Tohoku University, Japan
    • Year and Date
      2016-10-31
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Two‐wavelength Generation From Injection-seeded Terahertz-wave Parametric Generator2016

    • Author(s)
      K. Murate, S. Hayashi, K. Kawase
    • Organizer
      The 41st International Conference on Infrared, Millimeter, and Terahertz Waves
    • Place of Presentation
      Copenhagen, Denmark
    • Year and Date
      2016-09-25
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Pharmaceutical Tablet Inspection With Injection‐seeded Terahertz Parametric Generation Technique2016

    • Author(s)
      M. Mohara, K. Shimura, K. Aiko, N. Shiramizu, K. Murate, K. Kawase
    • Organizer
      The 41st International Conference on Infrared, Millimeter, and Terahertz Waves
    • Place of Presentation
      Copenhagen, Denmark
    • Year and Date
      2016-09-25
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] THz Spectroscopic Imaging Of Concealed Chemicals Using Is‐TPG2016

    • Author(s)
      M. Kato, K. Murate, K. Kawase
    • Organizer
      The 41st International Conference on Infrared, Millimeter, and Terahertz Waves
    • Place of Presentation
      Copenhagen, Denmark
    • Year and Date
      2016-09-25
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 2波長発振テラヘルツ波パラメトリック光源の開発2016

    • Author(s)
      村手宏輔, 林伸一郎, 川瀬晃道
    • Organizer
      第34回レーザセンシングシンポジウム
    • Place of Presentation
      野沢温泉スパリーナ, 長野
    • Year and Date
      2016-09-08
    • Related Report
      2016 Annual Research Report
  • [Presentation] THz spectroscopic imaging of chemicals hidden in thick envelopes2016

    • Author(s)
      K. Murate, R. Yamazaki, M. Kato, K. Kawase
    • Organizer
      Energy, Materials and Nanotechnology Meeting on Terahertz 2016
    • Place of Presentation
      San Sebastian, Spain
    • Year and Date
      2016-05-14
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Non-destructive THz imaging of chemicals using is-TPG2016

    • Author(s)
      K. Kawase, M. Kato, K. Murate
    • Organizer
      5th EOS Topical Meeting on Terahertz Science & Technology (TST 2016)
    • Place of Presentation
      Hotel Palatinus, Pecs, Hungary
    • Year and Date
      2016-05-08
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] THz spectroscopic imaging of chemicals through thicker obstacles2016

    • Author(s)
      K. Kawase, M. Kato, R. Yamazaki, K. Murate
    • Organizer
      SPIE DCS Conference Terahertz Physics, Devices, and Systems X
    • Place of Presentation
      Baltimore, USA
    • Year and Date
      2016-04-17
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] High efficiency THz generation using MgO:LiNbO3 crystal2016

    • Author(s)
      K. Murate, K. Imayama, S. Hayashi, K. Kawase
    • Organizer
      Energy, Materials and Nanotechnology Meeting on Optelectronics 2016
    • Place of Presentation
      Phuket, Thailand
    • Year and Date
      2016-04-12
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 光注入型テラヘルツ波パラメトリック発生器の 2 波長発生2016

    • Author(s)
      村手宏輔, 今山和樹, 林伸一郎, 川瀬晃道
    • 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
    • Year and Date
      2016-03-19
    • Related Report
      2015 Annual Research Report
  • [Presentation] 広帯域波長可変光注入型THz波パラメトリック光源の開発2016

    • Author(s)
      村手宏輔, 今山和樹, 林伸一郎, 川瀬晃道
    • Organizer
      レーザー学会学術講演会 第36回年次大会
    • Place of Presentation
      名城大学, 名古屋
    • Year and Date
      2016-01-09
    • Related Report
      2015 Annual Research Report
  • [Presentation] 光注入型THzパラメトリック発生器の周波数可変上限の拡大2015

    • Author(s)
      村手宏輔, 今山和樹, 林伸一郎, 川瀬晃道
    • Organizer
      電子情報通信学会電子デバイス研究会「ミリ波・テラヘルツ波デバイス・システム」
    • Place of Presentation
      東北大学, 仙台
    • Year and Date
      2015-12-21
    • Related Report
      2015 Annual Research Report
  • [Presentation] テラヘルツパラメトリック発生器の周波数可変域の拡大(依頼講演)2015

    • Author(s)
      村手宏輔, 今山和樹, 林伸一郎, 川瀬晃道
    • Organizer
      応用物理学会・テラヘルツ電磁波技術研究会 第 1 回研究討論会 /テラヘルツテクノロジーフォーラム 第 1 回テラテク技術セミナー「テラヘルツ領域の計測・標準と産業応用可能性」
    • Place of Presentation
      徳島大学,徳島
    • Year and Date
      2015-10-06
    • Related Report
      2015 Annual Research Report
  • [Presentation] 結晶傾斜によるTHz波パラメトリック光源の広帯域化2015

    • Author(s)
      村手宏輔, 今山和樹, 林伸一郎, 川瀬晃道
    • Organizer
      第76回応用物理学会秋季学術講演会
    • Place of Presentation
      名古屋国際会議場, 名古屋
    • Year and Date
      2015-09-13
    • Related Report
      2015 Annual Research Report
  • [Presentation] Tunability Enhancement Of Injection-seeded THz Parametric Generator2015

    • Author(s)
      K. Murate, K. Imayama, S. Hayashi, K. Kawase
    • Organizer
      The 40th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2015)
    • Place of Presentation
      The Chinese University of Hong Kong, Hong Kong, China
    • Year and Date
      2015-08-23
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Wider tunability of an injection-seeded THz parametric generator2015

    • Author(s)
      K. Murate, K. Imayama, S. Hayashi, K. Kawase
    • Organizer
      Nonlinear Optics 2015 (NLO 2015)
    • Place of Presentation
      Kaua'i Marriott Resort on Kalapaki Beach, Hawaii, USA
    • Year and Date
      2015-07-26
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of widely tunable THz parametric source2015

    • Author(s)
      K. Murate, K. Imayama, S. Hayashi, K. Kawase
    • Organizer
      Joint Symposium of The 3rd International Symposium on Microwave/Terahertz Science and Applications (MTSA 2015) and The 6th International Symposium on Terahertz Nanoscience (TeraNano 6)
    • Place of Presentation
      Okinawa Institute of Science and Technology, Okinawa, Japan
    • Year and Date
      2015-06-30
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Book] Fundamental and Applied Problems of Terahertz Devices and Technologies2017

    • Author(s)
      K. Murate, M. Kato, K. Kawase
    • Total Pages
      128
    • Publisher
      World Scientific Publishing
    • Related Report
      2016 Annual Research Report

URL: 

Published: 2015-11-26   Modified: 2024-03-26  

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