2014 Fiscal Year Final Research Report
Temporal and spatial control of ultrashort pulse and its application to THz wave
| Project/Area Number |
25610069
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Condensed matter physics I
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Research Collaborator |
SHINODA Naoki 東北大学, 大学院理学研究科
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Keywords | 超短光パルス / 時空間波形制御 / THz波発生 |
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| Outline of Final Research Achievements |
Temporal and 2-dimensinal spatial control of ultrashort light pulse has been achieved. The temporal pulse shape can be controlled by so called 4-f system which consists of a grating pair, lenses, and spatial phase modulator. In this research, newly proposed principle for 2D spatial and temporal control has been proved using double 4-f system and 2D phase modulator. Spatial resolution is about 0.1 mm. It can be improved, because it is determined by the present setup of the double 4-f system. Now, number of temporal shapes is limited, but it can be increased using a modulator with more pixels. The 2D spatial and temporal pulse can generate THz wave with controllable directivity and frequency. Numerical simulation shows the developed system can be used to the application of the controllable THz wave.
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| Free Research Field |
光物性
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