新型高性能軟X線レーザーの物理と開発実用化の研究

• Project/Area Number: 14GS0206
• Research Category: Grant-in-Aid for Creative Scientific Research
• Allocation Type: Single-year Grants
• Research Institution: The University of Tokyo
• Principal Investigator: 黒田 寛人 The University of Tokyo, 物性研究所, 准教授 (30126049)
• Co-Investigator(Kenkyū-buntansha): 馬場 基芳 東京大学, 物性研究所, 助教 (60159077) ; 青木 尊之 東京工業大学, 学術国際情報センター, 教授 (00184036) ; 尾崎 恒之 カナダ, ケベック大学・国立科学研究所(INRS), 助教授
• Project Period (FY): 2002 – 2007
• Project Status: Completed (Fiscal Year 2006)
• Budget Amount: ¥482,170,000 (Direct Cost: ¥398,230,000、Indirect Cost: ¥83,940,000); Fiscal Year 2006: ¥46,150,000 (Direct Cost: ¥35,500,000、Indirect Cost: ¥10,650,000); Fiscal Year 2005: ¥106,080,000 (Direct Cost: ¥81,600,000、Indirect Cost: ¥24,480,000); Fiscal Year 2004: ¥107,120,000 (Direct Cost: ¥82,400,000、Indirect Cost: ¥24,720,000); Fiscal Year 2003: ¥104,390,000 (Direct Cost: ¥80,300,000、Indirect Cost: ¥24,090,000); Fiscal Year 2002: ¥118,430,000 (Direct Cost: ¥118,430,000)
• Keywords: コヒーレント軟X線 / 制御高次高調波 / レーザー誘起共鳴増幅 / 超解像観測 / 蛍光共鳴エネルギー転移 / 異常共鳴強力高調波 / 軟X線レーザー / 高次高調波 / レーザープラズマ / 高出力チタンサファイヤレーザー / 共鳴効果 / 縦型励起方式 / フェムト秒レーザー / 軟X線 / 縦励起 / 過渡的衝突型 / 短パルスレーザープラズマ / Ni-Mo / 短パルスレザブラズマ

Research Abstract

縦型過渡励起軟X線レーザー生成のための固体ターゲットからの高密度レーザープラズマを非線形媒質に用いる制御高次高調波軟X線レーザーを初めて提案、実証した。イオン化エネルギーの高いマンガンを用いて7.9nm(101次)の制御高調波軟X線を得たが、レーザープラズマからのイオンを用いた高次高調波では世界最高次の最短波長である。レーザー誘起共鳴増幅による特定次数のコヒーレント単一制御高調波軟X線が得られることを世界に先駆けて実証し高出力・高効率化を達成し、その機構を解明した。Inを初め、次々と異常強力単一周波数共鳴増幅を観測した。変換効率は〜10^<-4>と桁違いの大きさであり、1パルス当たり1μJ以上という高エネルギーを得た。全く新しい新スキーム光源であり、励起レーザー波長やチャープ量、強度を精密にコントロールすることによって波長制御や変換効率をさらに上げられることがわかり今後の大きな期待が持てる。金属ナノ粒子クラスターを固体ターゲットに用いると高次での高調波強度がバルクターゲットに較べて6倍もの増強になることも確認した。ダブルターゲット方式による2波長高次高調波同時発生のスキームも確立し、2つのターゲットを並べてプリアイオナイズしておきメインレーザーを打ち込むとそれぞれのターゲットに特性的なスペクトルが加算され特性的な2波長で同時に高調波の発生が実証され分光用光源として大いに期待が高まった。
さらに半導体を含む種々の試料上に生成されるナノ構造が波長の数分の一以下になりうることや励起波長によってもナノ構造が劇的に変わることを発見するなど軟X線の応用の知見を得た。医学グループと連携してシグナル伝達の極微量計測システムにより蛍光共鳴エネルギー転移現象によるタンパク間のリガンド活性による構造変化をピコ秒スケールで時間発展観測をおこなった。
このようにコヒーレント軟X線光源を有効利用・測定する手法等を開発し新展開を目指し水の窓領域への挑戦を続けている。

Research Products

• [Journal Article] Low and high-order nonlinear optical prperties of Au, Pt, Pd, and Ru nanoparticles (2008)
  • Author(s): R. A. Ganeev
  • Journal Title: J. of Appl. Phys. 103
• [Journal Article] Low-and high-order nonlinear optical properties of BaTiO3 and SrTiO3 nanoparticles (2008)
  • Author(s): R. A. Ganeev
  • Journal Title: Journal of the Optical Society of America B 25 Pages: 325-333
• [Journal Article] High-order harmonic generation in Ag nanoparticle-containing plasma (2008)
  • Author(s): R. A. Ganeev
  • Journal Title: J. Phys. B: At. Mol. Opt. Phys. 41 Pages: 45603-45603
• [Journal Article] Fabrication of two-dimensional periodic nanostructures by two-beam interference of femtosecond pulses (2008)
  • Author(s): Tianqing Jia
  • Journal Title: Optics Express 16 Pages: 1874-1878
• [Journal Article] Extension of cutoff in high-harmonic by using doubly charged ions in a laser-ablation plume (2007)
  • Author(s): M. Suzuki
  • Journal Title: Journal of the Optical Society of America B 24 Pages: 2847-2852
• [Journal Article] Observation of single harmonic enhancement due to quasi-resonance conditions with the tellurium ion transition in the range of 29.44 nm (2007)
  • Author(s): M. Suzuki
  • Journal Title: Journal of the Optical Society of America B 24 Pages: 2686-2689
• [Journal Article] Variable pattern of high harmonic spectra from a laser-produced plasma by using the chirped pulses of narrow-bandwidth radiation (2007)
  • Author(s): R. Ganeev
  • Journal Title: Physical Review A 76 Pages: 23832-23832
• [Journal Article] Demonstration of the 101st harmonic generated from laser-produced manganese plasma (2007)
  • Author(s): R. Ganeev
  • Journal Title: Physical Review A 76 Pages: 23831-23831
• [Journal Article] Enhancement of two-color high harmonic by using two compound strong ionic transitions in double-target scheme (2007)
  • Author(s): M. Suzuki
  • Journal Title: Appl. Phys. Lett. 90 Pages: 261104-261104
• [Journal Article] Single attosecond pulse generation in He^+ by controlling the instant ionization rate using attosecond pulse trains combined with an intense laser pulse (2007)
  • Author(s): X. He
  • Journal Title: J. Opt. Soc. Am. B24 Pages: 1922-1926
• [Journal Article] High-order harmonic generation from the laser plasma produced by the pulses of different duration (2007)
  • Author(s): R. A. Ganeev
  • Journal Title: Physical Review A 76 Pages: 23805-23805
• [Journal Article] Intense harmonic generation from silver ablation (2007)
  • Author(s): T. Ozaki
  • Journal Title: Laser Part. Beams 25 Pages: 321-327
• [Journal Article] Tuning of the high-order harmonics generated from laser plasma plumes and solid surfaces by varying the laser spectrum, chirp, and focal position (2007)
  • Author(s): R. Ganeev
  • Journal Title: J. Opt. Soc. Am. B24 Pages: 1138-1143
• [Journal Article] Decay time shortening of fluorescence from donor-acceptor pair proteins using ultra fast time resolved fluorescence resonance energy transfer spectroscopy (2007)
  • Author(s): Motoyoshi Baba
  • Journal Title: J. of Luminescence 127 Pages: 355-361
• [Journal Article] Influence of the main pulse and prepulse intensity on high-order harmonic generation in silver plasma ablation (2007)
  • Author(s): L. B. Elouga Bom
  • Journal Title: Phys. Rev A75 Pages: 33804-33804
• [Journal Article] Seventy-first harmonic generation from doubly charged ions in preformed laser-ablation plume at 110eV (2007)
  • Author(s): M. Suzuki
  • Journal Title: Optics Express 15 Pages: 4112-4117
• [Journal Article] Formation mechanisms of uniform arrays of periodic nanoparticles on 6H-SiC crystal surface induced by femtosecond laser ablation (2007)
  • Author(s): X. J. Wu,
  • Journal Title: Appl. Phys. A86 Pages: 491-495
• [Journal Article] Intense exact resonance enhancement of single-high-harmonic from an antimony ion by using Ti: Sapphire laser at 37nm (2007)
  • Author(s): M. Suzuki
  • Journal Title: Optics Express 15 Pages: 1161-1166
• [Journal Article] Development of a compact efficient 10Hz 20TW Ti: Sapphire laser system with a 1kHz regenerative amplifie (2007)
  • Author(s): JunZhang
  • Journal Title: Appl. Optics 46 Pages: 2498-2502
• [Journal Article] Femtosecond laser-induced ZnSe nanowires on the surface of a ZnSe wafer in water (2007)
  • Author(s): T. Q. Jia
  • Journal Title: Sol. Stat. Comm. 141 Pages: 635-638
• [Journal Article] High harmonic generation in a laser plasma (2006)
  • Author(s): R. A. Ganeev
  • Journal Title: Optics and Spectroscopy 100 Pages: 937-945
• [Journal Article] Anomalous enhancement of a single high-order harmonic by using a laser-ablation tin plume at 47nm (2006)
  • Author(s): Masayuki Suzuki
  • Journal Title: Opt. Lett. 31 Pages: 3306-3308
• [Journal Article] Nonlinear optical characteristics of carbon disulfide (2006)
  • Author(s): R. A. Ganeev
  • Journal Title: Optics and Spectroscopy 100 Pages: 108-118
• [Journal Article] ZnSe nanowires grown on the crystal surface by femtosecond laser ablation in air (2006)
  • Author(s): T. Q. Jia
  • Journal Title: Appl. Phys. Lett. 89 Pages: 1-3
• [Journal Article] The ultrafast excitation processes in femtosecond laser-induced damage in dielecric omnidirectional reflectors (2006)
  • Author(s): T. Q. Jia
  • Journal Title: J. of Appl. Phys. 100
• [Journal Article] 33rd harmonic generation from aluminium plasma (2006)
  • Author(s): R. A. Ganeev
  • Journal Title: J. of Modern Optics 53 Pages: 1451-1458
• [Journal Article] Analysis of nonlinear self-interaction of femtosecond pulses during high-order harmonic generation in laser-produced plasma (2006)
  • Author(s): R. A. Ganeev
  • Journal Title: J. Opt. Soc. Am. B23 Pages: 1332-1337
• [Journal Article] optimization of harmonic generation from boron plasma (2006)
  • Author(s): R. A. Ganeev
  • Journal Title: J. of Appl. Phys. 99
• [Journal Article] Strong Resonance Enhancement of Single Harmonic Generated in Extreme Ultraviolet Range (2006)
  • Author(s): Rashid Ganeev
  • Journal Title: Opt. Lett. 31 Pages: 1699-1701
• [Journal Article] Frequency conversion of femotosecond radiation in magnesium plasma, (2006)
  • Author(s): R.A.Ganeev, Hiroto Kuroda:
  • Journal Title: Optics Comm. 256 Pages: 242-247
• [Journal Article] Frequency conversion in laser-produced boron plasma using longitudinal pump scheme, (2006)
  • Author(s): R.A.Ganeev, M.Suzuki, M.Baba, H.Kuroda:
  • Journal Title: The European Physical Journal D 37 Pages: 255-259
• [Journal Article] laser ablation of GaAs in liquids : optical, and nonlinear optical characteristics of colloidal solutions, (2005)
  • Author(s): R.A.Ganeev, M.Baba, A.I.Ryasnyansky, M.Suzuki, H.Kuroda
  • Journal Title: Appl. Phys.B 80 Pages: 595-601
• [Journal Article] Formation of nanogratings on the surface of ZnSe crystal irradiated by femtosecond laser pulses, (2005)
  • Author(s): T.Q.Jia, H.X.Chen, M.Huang, F.L.Zhao, J.R.Qiu, R.X.Li, Z.Z.Xu, X.K.He, J.Zhang, H.Kuroda:
  • Journal Title: Phys.Rev.B 72 Pages: 125429-125429
• [Journal Article] Generation of strong coherent extreme ultraviolet radiation from the laser plasma produced on the surface of solid targets, (2005)
  • Author(s): R.A.Ganeev, M.Suzuki, M.Baba, H.Kuroda:
  • Journal Title: Applied Physics B 81 Pages: 1081-1089
• [Journal Article] Study of Boron and Molybdenum Plasmas on Multipulse Interaction of Femtosecond Radiation with a Target, (2005)
  • Author(s): R.A.Ganeev, M.Suzuki, M.Baba, H.Kuroda:
  • Journal Title: Optics and Spectroscopy 99 Pages: 1000-1005
• [Journal Article] High-order harmonic generation from boron plasma in the extreme-ultraviolet range (2005)
  • Author(s): Rashid Ganeev, Masayuki Suzuki, Motoyoshi Baba, Hiroto Kuroda
  • Journal Title: Opt.Lett. 30(提出中)
• [Journal Article] Harmonic generation in Moplasma (2005)
  • Author(s): R.A.Ganeev, I.A.Kulagin, M.Suzuki, M.Baba, Hiroto Kuroda
  • Journal Title: Optics.Commun (掲載待ち)(提出中)
• [Journal Article] Advanced 20TW Ti : S laser system for X-Ray laser and coherent XUV generation irradiated by ultra-high intensities (2005)
  • Author(s): H Kuroda, M Suzuki, RGaneev, Ju Zhang, M Baba, T Ozaki, Zhi Yi Wei, Jie Zhang
  • Journal Title: Laser and Particle Beains. 23 Pages: 203-206
• [Journal Article] Harmonic generation from chromium Plasma (2005)
  • Author(s): R.A.Ganeev, M.Suzuki, M.Baba, H.Kuroda
  • Journal Title: A.P.L. (掲載待ち)(提出中)
• [Journal Article] High order harmonic generation from silver plasma (2005)
  • Author(s): R.A.Ganeev, M.Baba, M.Suzuki, H.Kuroda
  • Journal Title: Physics Lett.A (掲載待ち)(提出中)
• [Journal Article] Direct observation of metal complex nano-particles doped in sol-gel silica glasses using Transmission Electron Microscopy (2004)
  • Author(s): M.Baba, M.Morita, M.Ichihara, D.Rau, R.A.Ganeev, M.Suzuki, T.Ishii, M.Iwamura, H.Kuroda
  • Journal Title: Appl.Phys.Letts 84 Pages: 2394-2396
• [Book] Higher-harmonics based on new scheme of ablation controlled plasma and anomalous Intense single high-harmonic due to strong resonance enhancement in XUV region (2007)
  • Author(s): M. Suzuki
  • Total Pages: 16
  • Publisher: Research Signpost, Kerala, INDIA
• [Book] Proceeding of SPIE 5971 (2005)
  • Author(s): H.Kuroda, R.A.Ganeev, M.Suzuki, M.Baba, J.Zhang, T.Ozaki:
  • Total Pages: 8
  • Publisher: Brilliant Highly Directive Higher Harmonics and Soft X-Ray Lasers from Solid Target Plasma Pumped by Tabletop Ti : S Laser,
• [Book] Development of advanced 20 TW Ti : S laser system for X-Ray laser and coherent XUV generation, (2004)
  • Author(s): H.Kuroda, M.Suzuki, R.A.Ganeev, J.Zhang, M.Baba, T.Ozaki, Z.Y.Wei, J.Zhang
• [Publications] R.A.Ganeev, M.Suzuki, M.Baba, M.Turu, H.Kuroda: "Generation of backscattered 2ωand 3ω/2 harmonics of femtosecond radiation from the targets with different atomic number."Applied Physics B. 78. 79-85 (2004)
• [Publications] R.A.Ganeev, M.Baba, M.Morita, A.I.Ryasnyansky, M.Suzuki, M.Turu, H.Kuroda: "Fifth-order optical nonlinearity of PIC dye solution at 529nm"Journal of Optics A. 6. 282-287 (2004)
• [Publications] R.A.Ganeev, M.Baba, A.I.Ryasnyansky, M.Suzuki, M.Turu, H.Kuroda: "Two-and three-photon absorption in CS_2"Optics Communications. 231. 431-436 (2004)
• [Publications] R.A.Ganeev, T.Kanai, A.Ishizawa, T.Ozaki, H.Kuroda: "Development and applications of a compact hybrid tabletop terawatt chirped-pulse amplification Ti : sapphire - Nd : glass laser for x-ray lasing and harmonic generation"Applied Optics. 43. 1396-1403 (2004)
• [Publications] R.A.Ganeev, M.Baba, A.I.Ryasnyansky, M.Suzuki, M.Turu, H.Kuroda: "Nonlinear refraction in CS_2"Applied Physics B. 78. 433-448 (2004)
• [Publications] H.Kuroda, R.A.Ganeev, T.Ozaki, A.Ishizawa, M.Baba, Hao Teng, M.Suzuki: "Observation of advanced 18.9nm soft X-ray laser and harmonics and subharmonics mixing in femtosecond radiation pumped plasmas"30^<th> European Physical Society Conference on Controlled Fusion and Plasma Physics, St Petersburg, Russia, Proceedings. ECA27A. O-1-2c (2003)
• [Publications] R.A.Ganeev, M.Suzuki, M.Baba, M.Turu, H.Kuroda: ""Generation of backscattered 2w and 3w/2 harmonics of femtosecond radiation from the targets with different atomic number" Technical Summary Digest"Photonics West 2004, San Jose, USA. 243-244 (2004)
• [Publications] T.Ozaki, K.Yamamoto, H.Kuroda: "Jetlike structures in the visible emission of preplasma pumped by an obliquely incident nicosecond laser"J.Phys.Soc.Jap.. (To be published).
• [Publications] T.Ozaki, K.Yamamoto, H.Kuroda, R.Li: "Target design for longitudinallypumping transient-collisicnal excitation X-ray Lasers"Opt.Commun.. (submitted).
• [Publications] A.Ishizawa, R.A.Ganeey, T.Kanai, H.Kuroda, T.Ozaki: "Measurernent of Blueshift due to the Collisionless Absorption in Harmonic Generation from Subpicosecond Laser Produced Plasma"Phys.Rev.E.. 66. 026414-2 (2002)
• [Publications] A.Ishizawa, R.A.Ganeey, T.Kanai, H.Kuroda, T.Ozaki: "Polarization Peculiarities of Femtosecond Laser Induced Harmonic Generation from Solid Surface Plasma"Phys.Rev.E.. (submitted).
• [Publications] Tsuneyuki Ozaki, Rashid Ganeey, Atsushi Ishizawa, Teruto Kanai: "Highly directive 18.9-nm nickellike molybdenum x-ray laser operating at 150mJ pump energy"Phys.Rev.Lett.. 89. 253902-1 (2002)
• [Publications] Tuneyuki Ozaki, Hidetoshi Nakano, Hiroto Kuroda: "Charactristics of longitudinally pumped nickellike molybdenum x-ray lasers generated in waveguides"J.O.S.A. B. 19. 1335 (2002)