| Project/Area Number |
14002003
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| Research Category |
Grant-in-Aid for Specially Promoted Research
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| Allocation Type | Single-year Grants |
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| Review Section |
Physics
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| Research Institution | The University of Tokyo |
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Principal Investigator |
KOBAYASHI Takayoshi The University of Tokyo, Graduate School of Science, Professor, 大学院・理学系研究科, 教授 (60087509)
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| Co-Investigator(Kenkyū-buntansha) |
YABUSHITA Atsushi The University of Tokyo, Graduate School of Science, Professor, 大学院・理学系研究科, 助手 (20376536)
平澤 正勝 東京大学, 大学院・理学系研究科, 助手 (90262162)
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| Project Period (FY) |
2002 – 2005
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| Project Status |
Completed (Fiscal Year 2005)
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| Budget Amount *help |
¥200,200,000 (Direct Cost: ¥154,000,000、Indirect Cost: ¥46,200,000)
Fiscal Year 2005: ¥39,000,000 (Direct Cost: ¥30,000,000、Indirect Cost: ¥9,000,000)
Fiscal Year 2004: ¥37,700,000 (Direct Cost: ¥29,000,000、Indirect Cost: ¥8,700,000)
Fiscal Year 2003: ¥35,100,000 (Direct Cost: ¥27,000,000、Indirect Cost: ¥8,100,000)
Fiscal Year 2002: ¥88,400,000 (Direct Cost: ¥68,000,000、Indirect Cost: ¥20,400,000)
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| Keywords | Non-collinear optical parametric amplification (NOPA) / Carrier envelope phase (CEP) / Absolute phase / Visible-infrared region / Transient-state spectroscopy / Real-time vibrational spectroscopy / Photonic crystal fiber / Quantum interference control / キャリアエンベロープ位相(CEP) / 可視-近赤外領域 / 分子配向誘起 / コヒーレントコントロール / 可視?近赤外領域 / 非同軸光パラメトリック増幅 / NOPA / キャリアエンベロープ位相 / 新奇非線型結晶 / フォトニッククリスタルファイバ / フタロシアニン / 超短光パルス発生 / 非平行光パラメトリック増幅(NOPA) / 絶対位相のロック / 物質・超短パルス相互作用 / 超広帯域光スペクトル発生 / パルス圧縮 |
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| Research Abstract |
(1) Generation of ultra-short pulse: Carrier envelope phase (CEP) selfstabilization of the NOPA output pulse was evaluated with the photonic crystal fiber, and its stability was confirmed. inter-stabilization of outputs of two NOPA systems was also evaluated by means of spectral interference. Anew spectroscopy system for pump-probe measurement with two NOPA systems was constructed.
(2) Development of ultra-short pulse characterization method: CEP of the ultra-short pulse was measured. Conventional method of CEP measurement is limited on the use of extremely intense laser field. A newly developed method has enabled us to measure the CEP of pulse with arbitrary intensity. Ultra-short pulse with a fixed CEP was generated by means of OPA, and fluctuation was stabilized successfully asmuch as π/10. Using the CEP-controlled laser system, a CEP optical poling experiment was established. Induced molecular orientation was shown to be controlled by the CEP, which was consistent with theoretical prediction.
(3) Transient-state spectroscopy (Real-time spectroscopy of molecular vibration): Real-time dynamics of vibronic coupling of molecular system, such as polydiacetylene, one-dimensional system of conjugated polyene, isocyanine J-aggregate, phthalocyanine, porphyrin and its metallic compound, was established.
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