| Project/Area Number |
20K15197
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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 30020:Optical engineering and photon science-related
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| Research Institution | Institute of Physical and Chemical Research |
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Principal Investigator |
Lin Yu-Chieh 国立研究開発法人理化学研究所, 光量子工学研究センター, 研究員 (00752073)
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| Project Period (FY) |
2020-04-01 – 2022-03-31
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| Project Status |
Completed (Fiscal Year 2021)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2020: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
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| Keywords | singular optics / ultrafast optics / laser technology / optical vortex / ultrabroadband |
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| Outline of Research at the Start |
(Specific Aim 1) Preparation of an ultrabroadband vortex pulse in the range of 900 nm to 2400 nm with a pulse duration of ~5 femtosecond (fs).
(Specific Aim 2) Second is to achieve shorter wavelength range spanning from 100 nm to 900 nm by using the technique of high-order harmonic generation (HHG).
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| Outline of Final Research Achievements |
In order to meet an increasing demand for applications of optical vortices with a variety of wavelength ranges, this research successfully realized the development of a table-top achromatic (multi-color) vortex source with wavelength range continuously spanning from 2400 nm to 900 nm (short-wave infrared, SWIR).
During this period, I also developed a technique for controlling the carrier-envelope phase (CEP) of single-cycle pulses (Opt. Express, 30, 10818, 2022) and this technique was further combined with the generation of the broadband vortex source in the SWIR region. A CEP controllable, over-octave bandwidth, SWIR vortex source was successfully generated. This light source is expected to provide new applications and ideas in the fields of singular and ultrafast optics.
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| Academic Significance and Societal Importance of the Research Achievements |
The more than a century old Sagnac interferometer is put to first of its kind use to generate optical vortex with more than an octave bandwidth. This combination leads to a high quality vortex pulse than ever reported literatures.
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