Development of Two Color Teraheltz Laser Diagnostics for the Fusion Plasmas

• Project/Area Number: 22360393
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Nuclear fusion studies
• Research Institution: National Institute for Fusion Science
• Principal Investigator: MORISHITA Kazuo 核融合科学研究所, ヘリカル研究部, 教授 (60109353)
• Co-Investigator(Kenkyū-buntansha): AKIYAMA Tsuyoshi 核融合科学研究所, ヘリカル研究部, 准教授 (80370138) ; TANAKA Kenji 核融合科学研究所, ヘリカル研究部, 准教授 (50260047) ; OKAJIMA Shigeki 中部大学, 工学部, 教授 (90113084) ; NAKAYAMA Kazuya 中部大学, 工学部, 講師 (40434584)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥13,780,000 (Direct Cost: ¥10,600,000、Indirect Cost: ¥3,180,000); Fiscal Year 2012: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000); Fiscal Year 2011: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2010: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
• Keywords: 核融合プラズマ / レーザー計測 / テラヘルツ / 干渉計測 / 偏光計測

Research Abstract

Two color laser diagnostics using terahertz laser sources is under development for a high performance operation of the Large Helical Device and for future fusion devices. So far, we have achieved high power laser oscillation lines simultaneously oscillating at 57.2 and 47.7 ・m by using a twin optically pumped CH3OD laser, and confirmed the original function, compensation of mechanical vibration

Research Products

• [Journal Article] ショットキーバリヤーダイオードの短波 長遠赤外領域での特性とその応用 (2012)
  • Author(s): 中山和也、岡島茂樹、川端一男、田中謙治、 秋山毅志
  • Journal Title: 電気学会論文誌A Volume: Vol. 132 Pages: 722-726
  • Peer Reviewed
• [Journal Article] Progress in development of two color laser diagnostics for the ITER poloidal polarimeter (2012)
  • Author(s): K. Kawahata, T. Akiyama, K. Tanaka, S. Okajima and K.Nakayama
  • Journal Title: JINST Volume: Vol. 7
  • Peer Reviewed
• [Journal Article] Dispersion interferometer for LHD (2012)
  • Author(s): T. Akiyama, K. Kawahata, R. Yasuhara, S. Okajima and K.Nakayama
  • Journal Title: JINST Volume: Vol. 7
  • Peer Reviewed
• [Journal Article] Dispersion interferometer for Large Helical Device (2012)
  • Author(s): T.Akiyama, et.al.
  • Journal Title: Journal of Instrumentation Volume: 7 Issue: 01 Pages: C01055-C01055
  • DOI: 10.1088/1748-0221/7/01/c01055
  • Peer Reviewed
• [Journal Article] Progress in development of two color laser diagnostics for the ITER poloidal polarimeter (2012)
  • Author(s): K. Kawahata
  • Journal Title: Journal of Instrumentation Volume: 7 Issue: 02 Pages: C02002-C02002
  • DOI: 10.1088/1748-0221/7/02/c02002
  • Peer Reviewed
• [Journal Article] Characteristics of GaAs Schottky Barrier Diode in Short Wavelength Far Infrared Region and the Application (2012)
  • Author(s): 中山和也, 岡島茂樹, 川端一男, 田中謙治, 秋山毅志
  • Journal Title: IEEJ Transactions on Fundamentals and Materials Volume: 132 Issue: 9 Pages: 722-726
  • DOI: 10.1541/ieejfms.132.722
  • NAID: 10031018979
  • ISSN: 0385-4205, 1347-5533
  • Peer Reviewed
• [Journal Article] Conceptual Design of Electron Density Measurement System for DEMO-Relevant Helical Plasmas (2012)
  • Author(s): Tsuyoshi AKIYAMA, et.al.
  • Journal Title: Plasma and Fusion Research Volume: 7 Issue: 0 Pages: 2402013-2402013
  • DOI: 10.1585/pfr.7.2402013
  • NAID: 130002059615
  • ISSN: 1880-6821
  • Peer Reviewed
• [Journal Article] 遠赤外レーザーの開発とその応用 (2011)
  • Author(s): 中山和也、岡島茂樹、川端一男
  • Journal Title: プラズマ・核融合学会誌 Volume: Vol. 87 Pages: 801-815
  • NAID: 110008898423
  • Peer Reviewed
• [Journal Article] Particle Transport of LHD (2010)
  • Author(s): K. Tanaka, K. Kawahata, T. Tokuzawa, T. Akiyama
  • Journal Title: Fusion Science and Technology Volume: Vol. 58, No. 1,2 Pages: 70-90
  • Peer Reviewed
• [Journal Article] Interferometer System on LHD (2010)
  • Author(s): T. Akiyama, K. Kawahata, K. Tanaka, T. Tokuzawa, Y. Ito, Okajima, K. Nakayama, C.A. Michael, L.N. VyachesLavov, A. Sanin, S. Tsuji-Iio and LHD Experimental Group
  • Journal Title: Science and Technology Volume: Vol. 58 Pages: 352-363
  • Peer Reviewed
• [Journal Article] Conceptual Design of a Dispersion Interferometer Using a Ratio of Modulation Amplitudes (2010)
  • Author(s): T. Akiyama, K. Kawahata, S. Okajima, and K. Nakayama
  • Journal Title: Plasma and Fusion Research Volume: Vol. 5
  • NAID: 130000442462
  • Peer Reviewed
• [Journal Article] Overview of LHD Plasma Diagnostics (2010)
  • Author(s): K. Kawahata, B.J. Peterson, T. Akiyama
  • Journal Title: Fusion Science and Technology Volume: Vol. 58 Pages: 331-344
  • Peer Reviewed
• [Journal Article] Development of two color laser diagnostics for the ITER poloidal polarimeter (2010)
  • Author(s): K. Kawahata, T. Akiyama, K. Tanaka, K. Nakayama, and S. Okajima
  • Journal Title: Review of Scientific Instruments Volume: Vol. 81,No. 10
  • Peer Reviewed
• [Journal Article] Recent Progress in Two-Color Laser Diagnostics (2010)
  • Author(s): K. Kawahata, T. Akiyama, K. Tanaka, S. Okajima and K.Nakayama
  • Journal Title: Journal of Physics: Conference Series Volume: Vol.227
  • Peer Reviewed
• [Journal Article] Overview of LHD Plasma Diagnostics (2010)
  • Author(s): K.Kawahata, B.J.Peterson, T.Akiyama, N.Ashikawa, et al.
  • Journal Title: Fusion Science and Technology Volume: 58 Pages: 331-344
  • Peer Reviewed
• [Journal Article] Development of two color laser diagnostics for the ITER poloidal polarimeter (2010)
  • Author(s): K.Kawahata, T.Akiyama, K.Tanaka, et al.
  • Journal Title: Review of Scientific Instruments Volume: 81
  • Peer Reviewed
• [Journal Article] Improved Resolution and Stability in a Dispersion Interferometer Using a Modulation Amplitude Ratio (2010)
  • Author(s): Tsuyoshi Akiyama, Kazuo Kawahata, et al.
  • Journal Title: Plasma and Fusion Research Volume: 5
  • NAID: 130000442421
  • Peer Reviewed
• [Journal Article] Development of CO_2 laser dispersion interferometer with photoelastic modulator (2010)
  • Author(s): T.Akiyama, K.Kawahata, S.Okajima, et al.
  • Journal Title: Review of Scientific Instruments Volume: 81
  • Peer Reviewed
• [Journal Article] Conceptual Design of a dispersion interferometer using a ratio of modulation amplitudes (2010)
  • Author(s): Tsuyoshi AKIYAMA, Kazuo KAWAHATA, et al.
  • Journal Title: Plasma and Fusion Research Volume: 5
  • NAID: 130000442462
  • Peer Reviewed
• [Journal Article] Interferometer Systems on LHD (2010)
  • Author(s): T.Akiyama, K.Kawahata, K.Tanaka, T.Tokuzawa, et al.
  • Journal Title: Fusion Science and Technology Pages: 352-363
  • Peer Reviewed
• [Presentation] Developments of Simultaneously O scillated Three-color FIR (48-, 57-, and 119-μm) Lasers (2012)
  • Author(s): Kazuya Nakayama
  • Organizer: The 37th International Conference on Infrared, Millimeter and Terahertz Waves
• [Presentation] Conceptual Design of Electron Density Measurement System for DEMO-Relevant Helical Plasmas (2011)
  • Author(s): T.Akiyama, et.al.
  • Organizer: 21st International Toki Conference
  • Place of Presentation: Toki, Gifu
  • Year and Date: 2011-11-29
• [Presentation] 波長1ミクロン帯光源を用いたデイスパーション干渉計の概念設計 (2011)
  • Author(s): 秋山毅志, 他
  • Organizer: Plasma Conference 2011
  • Place of Presentation: 金沢
  • Year and Date: 2011-11-22
• [Presentation] Development of Two Color Laser Diagnostics for the ITER Poloidal Polarimeter (2011)
  • Author(s): K.Kawahata, et.al.
  • Organizer: 15th International symposium of Laser-aided Plasma Diagnostics
  • Place of Presentation: Jeju, Korea(招待講演)
  • Year and Date: 2011-10-11
• [Presentation] Dispersion interferometer for Large Helical Device (2011)
  • Author(s): T.Akiyama, et.al.
  • Organizer: 15th International symposium of Laser-aided Plasma Diagnostics
  • Place of Presentation: Jeju, Korea
  • Year and Date: 2011-10-10
• [Presentation] Application of a GaAs Schottky Barrier Diode Mixer to Beat Signal Detection of the 5-6 THz band (2011)
  • Author(s): K.Nakayama, et.al.
  • Organizer: 36th International Conference on Infrared, Millimeter, and Terahertz Waves
  • Place of Presentation: Houston, USA
  • Year and Date: 2011-10-06
• [Presentation] GaAsショットキーバリアダイオードの5～6THzレーザー計測への適用 (2011)
  • Author(s): 中山和也, 岡島茂樹, 川端一男, 田中謙治, 秋山毅志
  • Organizer: 第58回応用物理学関係連合講演会
  • Place of Presentation: 神奈川工科大学
  • Year and Date: 2011-03-25
• [Presentation] 2波長レーザー干渉・偏光計測の開発 (2011)
  • Author(s): 川端一男、秋山毅志、岡島茂樹、中山和也
  • Organizer: Plasma Conference 2011
  • Place of Presentation: 金沢
• [Presentation] Development of Two Color Laser Diagnostics for the ITER Poloidal Polarimeter (2011)
  • Author(s): K. Kawahata, T. Akiyama, K. Tanaka, K. Nakayama and S. Okajima
  • Organizer: 15th International Symposium on Laser-Aided Plasma Diagnostics
  • Place of Presentation: Jeju, KOREA
• [Presentation] 核融合プラズマの高精度干渉・偏光計測用高性能cw THzレーザーの開発 (2010)
  • Author(s): 中山和也, 岡島茂樹, 川端一男, 田中謙治, 秋山毅志
  • Organizer: 電気学会 光応用・視覚研究会
  • Place of Presentation: 大阪産業大学 梅田サテライトキャンパス
  • Year and Date: 2010-12-27
• [Presentation] 2波長同時発振型テラヘルツレーザーを用いた干渉・偏光計測法の開発 (2010)
  • Author(s): 川端一男、秋山毅志、田中謙治、岡島茂樹、中山和也
  • Organizer: 第27回プラズマ・核融合学会年会
  • Place of Presentation: 北海道大学学術交流会館(招待講演)
  • Year and Date: 2010-12-03
• [Presentation] 変調強度比を用いたディスパーション干渉計の性能評価 (2010)
  • Author(s): 秋山毅志、川端一男、岡島茂樹、中山和也
  • Organizer: 第27回プラズマ・核融合学会年会
  • Place of Presentation: 北海道大学学術交流会館
  • Year and Date: 2010-12-01
• [Presentation] Precise measurements of optical constants of SiC in 40 to 120μm wavelength region (2010)
  • Author(s): K.Nakayama, A.Matsubara, S.Okajima, K.Kawahata, et al.
  • Organizer: 35th International conference of infrared, millimeter and terahertz waves
  • Place of Presentation: Roma, Italy
  • Year and Date: 2010-09-07
• [Presentation] Dispersion interferometer development and plan for LHD (2010)
  • Author(s): T.Akiyama, K.Kawahata, S.Okajima, K.Nakayama
  • Organizer: 3rd Workshop on Interferometry for Steady State Fusion Devices
  • Place of Presentation: IPP-Greifswald Germany.
  • Year and Date: 2010-06-29
• [Presentation] 核燃焼プラズマ計測のための2波長レーザー計測法の開発 (2010)
  • Author(s): 川端一男、秋山毅志、田中謙治、岡島茂樹、中山和也
  • Organizer: 第8回核融合エネルギー連合講演会
  • Place of Presentation: 高山市民文化会館
  • Year and Date: 2010-06-10
• [Presentation] 変調強度比を用いたディスパーション干渉計の設計・開発 (2010)
  • Author(s): 秋山毅志、川端一男、岡島茂樹、中山和也
  • Organizer: 第8回核融合エネルギー連合講演会
  • Place of Presentation: 高山市民文化会館
  • Year and Date: 2010-06-10
• [Presentation] Development of CO_2 laser dispersion interferometer with photoelastic modulator (2010)
  • Author(s): T.Akiyama, K.Kawahata, S.Okajima, K.Nakayama
  • Organizer: 18th Topical conference on high temperature plasma diagnostics
  • Place of Presentation: Wildwood USA.
  • Year and Date: 2010-05-17
• [Presentation] Development of two color laser diagnostics for the ITER poloidal polarimeter (2010)
  • Author(s): K. Kawahata, T. Akiyama, K. Tanaka
  • Organizer: High Temperature Plasma Diagnostics
  • Place of Presentation: Wildwood, USA