| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
|
|---|
| Outline of Final Research Achievements |
We proposed using enhanced terahertz (THz) waves travelling in an external cavity and have been working on the development of enhanced THz wave techniques. We have fabricated a customized high-repetition-rate mode-locked Ti:sapphire laser system with a cavity length of 30 cm for enhanced THz wave experiments. The average power of the laser system is ~900 mW, which is several times higher than that of commercial laser systems. We have also designed and constructed an external THz ring cavity with a high-resistivity silicon plate input/output coupler and several metallic mirrors. We have detected the temporal waveforms of 5-round-trip THz pulses propagated in the external ring cavity when the external cavity length differed slightly from the laser cavity length. Additionally, we have observed ×1.1- enhanced THz waves transmitted outside the external THz ring cavity when the external cavity length was the same as the laser cavity length.
|
