| Project/Area Number |
21K14217
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 21060:Electron device and electronic equipment-related
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| Research Institution | Okinawa Institute of Science and Technology Graduate University |
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Principal Investigator |
BACON David 沖縄科学技術大学院大学, フェムト秒分光法ユニット, ポストドクトラルスカラー (90899428)
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Project Status |
Discontinued (Fiscal Year 2023)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2021: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
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| Keywords | Terahertz / Microplasma / Optics / microplasma |
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| Outline of Research at the Start |
(1 year) Create a two-colour microplasma capable of generating nanojoule THz pulses at a repetition rate of 2MHz. A tight focusing regime is achieved using a silver concave mirror, while electro-optic detection will be employed to resolve the phase of the THz pulse.
(1 year, 6 months) Inject argon/krypton into the plasma filament to optimize the efficiency, output power and bandwidth, resulting in a bandwidth of 70THz.
(2 years) Focusing the THz power down to a refraction limited spot size to achieve high fields of greater than 100kV/cm.
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| Outline of Annual Research Achievements |
Built a fully function Terahertz time domain spectroscopy setup and found a pulse using a photoconductive emitter in reflection geometry. I supervised a student for 3 months to help them build this setup and teach them about Terahertz generation. I devised a unique and compact method for generating two colour plasma without having to physically separate the fundamental and second harmonic beam. This uses a BBO crystal combined with calcite waveplate system in order to adjust the time delay between the two. When fully built this was very compact using only two parabolic mirrors to collect and focus the Terahertz pulse. Unfortunately, we were unable to find a pulse which we could attribute to the plasma. However, a future collaboration has been created for further development.
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