Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2011: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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Research Abstract |
Novel terahertz-wave generation and detection via surface phonon modes were studied, in order to explore Reststrahlen bands at terahertz-phonon frequencies. Using numerical analysis, we found novel dispersion relations of surface phonons in a nonlinear optical crystal as well as radiative terahertz field patterns. Based on the analyzed structures, high-quality surface gratings were successfully fabricated on lithium niobate crystals, using reactive ion etching. Ultra-broad, sensitive terahertz-wave detection was also realized under ambient temperature, using nonlinear frequency mixing of terahertz and optical waves.
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