| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Research Abstract |
To accelerate the degenerate four-wave-mixing (DFWM) measurement, rapid scanning stage was introduced to the experimental setup and the signal was monitored by an oscilloscope.With this system, integration of 500 times takes only 2 minutes and the acceleration of the measurement was successful. Ultrafast DFWM measurement (pulse duration: ca. 13 fs) of oxazine 1 (Ox1) in electron donating solvent, N,N-dimethylaniline (DMA), was carried out and compared with that in an inert solvent, 1-chloronaphthalene (1-CN). In 1-CN, strong oscillation due to the coherent nuclear wavepacket motion was observed. On the other hand, in DMA, ultrafast decay within 100 fs, which is due to the charge transfer (CT) reaction, was observed and the oscillation also dephased very rapidly. By comparing the Fourier transform spectra of the signals, it was concluded that wavepacket motion in the CT state could be appearing for Ox1 in DMA.
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