2015 Fiscal Year Final Research Report
Development of a rapid scan THz-TDS system by using random sampling method
| Project/Area Number |
25820139
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Electron device/Electronic equipment
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| Research Institution | University of Fukui |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | レーザー / タイミングジッター / テラヘルツ / 高速測定 |
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| Outline of Final Research Achievements |
New rapid scan THz time domain spectrometer by using random sampling method. In this system, one cycle time delay added to the pump pulse, as a result the timing between pump and probe pulse was fluctuated by the laser timing jitter. The key points of this system, One is the measurement incident timing difference between pump and probe pulse. Another one is a weak signal measurement of THz wave intensity of each pulse. The timing difference between two pulses was measured by a cross-correlation method using nonlinear crystal. Measured sum frequency wave intensity of each pulse corresponds to the time difference between two pulses. THz wave amplitude was observed by a spiral type photoconductive antenna combined with a high speed response current amplifier. We achieved measurement of both signals of the sum frequency generation and THz wave at the same time. These results indicate a possibility for developing new type rapid scan THz time domain spectroscopy.
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| Free Research Field |
テラヘルツ時間領域分光
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