| Project/Area Number |
22654034
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Condensed matter physics I
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| Research Institution | Yokohama National University |
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Principal Investigator |
TAKEDA Jun 横浜国立大学, 工学研究院, 教授 (60202165)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥3,010,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥2,100,000 (Direct Cost: ¥2,100,000)
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| Keywords | 光物性 / 光計測 / フェムト秒 / イメージング / エシェロン / シングルショット / 光誘起相転移 / 光化学反応 / パイエルス絶縁体 / 強相関ラジカル結晶 |
|---|
| Research Abstract |
We demonstrate single-shot time-frequency imaging spectroscopy with an echelon mirror, for measuring ultrashort laser pulses as well as ultrafast responses of materials using the same optical setup. Using the second harmonic generation or optical Kerr gate apparatus, we successfully mapped the time-frequency images of ultrashort laser pulses, and subsequently evaluated the chirp characteristics with the phase-retrieval procedure on a single-shot basis. By simply replacing a nonlinear crystal/Kerr medium with samples, we could also visualize the phonon-polariton oscillations in ferroelectric LiNbO_3.
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