Development of enhanced terahertz radiation using external cavity
Project/Area Number |
26800214
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Atomic/Molecular/Quantum electronics
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Research Institution | Osaka City University |
Principal Investigator |
NASHIMA Shigeki 大阪市立大学, 大学院工学研究科, 講師 (90347485)
|
Research Collaborator |
HOSODA Makoto
TAKIDA Yuma
TADOKORO Yuzuru
KUMAGAI Hiroshi
|
Project Period (FY) |
2014-04-01 – 2017-03-31
|
Project Status |
Completed (Fiscal Year 2016)
|
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)
|
Keywords | テラヘルツ波 / 外部共振器 / エンハンスメント効果 / 高繰り返し周期フェムト秒レーザー / 時間領域分光法 |
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.
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Report
(4 results)
Research Products
(6 results)