| Budget Amount *help |
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2019: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2018: ¥11,700,000 (Direct Cost: ¥9,000,000、Indirect Cost: ¥2,700,000)
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| Outline of Final Research Achievements |
In this work, we developed a new method for extracting photoinduced polarization (magnetization) dynamics and polarization vector using terahertz radiations emitted from ferroelectrics (ferromagnets) upon irradiation of a femtosecond laser pulse. Especially, we achieved high-efficiency terahertz radiation originating from the photoinduced neutral-to-ionic transition (photoinduced phase transition), narrow-band terahertz radiation originating from the molecular vibration via the photoinduced insulator-to-metal transition, and detection of a three-dimensional polarization vector in a thin film of organic films using the emission of the terahertz waves.
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