| Budget Amount *help |
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2020: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2019: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Fiscal Year 2018: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
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| Outline of Final Research Achievements |
We investigated backward terahertz-wave parametric oscillation (BW-TPO) and demonstrated efficient THz-wave generation via cascading wavelength conversion. The comprehensive analysis of input-output characteristics of BW-TPO showed the issues on high oscillation threshold intensity and its photon-conversion efficiency. We applied injection-seeding to BW-TPO for an idler wave to achieve threshold reduction and efficient photon-conversion, resulting demonstration of cascaded BW-TPO. As a result, output THz-wave energy enhanced over 100 times from previous results, corresponding to high-peak power over 100 W at the frequency of 0.3 THz.
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