| Project/Area Number |
20246017
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied optics/Quantum optical engineering
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| Research Institution | Hokkaido University |
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Principal Investigator |
SEKIKAWA Taro Hokkaido University, 大学院・工学研究科, 准教授 (90282607)
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| Research Collaborator |
HARAGUCHI Eisuke 北海道大学, 大学院・工学研究科, 修士課程
OKAMOTO Tatsuya 北海道大学, 大学院・工学研究科, 修士課程
ITO Motohiko 北海道大学, 大学院・工学研究科, 修士課程
KATAOKA Yoshimasa 北海道大学, 工学部, 学士課程
IGARASHI Hironori 北海道大学, 工学部, 学士課程
MAKIDA Ayumu 北海道大学, 工学部, 学士課程
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥44,460,000 (Direct Cost: ¥34,200,000、Indirect Cost: ¥10,260,000)
Fiscal Year 2010: ¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000)
Fiscal Year 2009: ¥15,080,000 (Direct Cost: ¥11,600,000、Indirect Cost: ¥3,480,000)
Fiscal Year 2008: ¥20,280,000 (Direct Cost: ¥15,600,000、Indirect Cost: ¥4,680,000)
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| Keywords | 非線形光学 / アト秒パルス / 高次高調波 / 光電子分光 / パルス幅計測 / 二光子吸収 / 空間イメージング / アト秒科学 / 二電子励起状態 |
|---|
| Research Abstract |
The bandwidth of high harmonics, including attosecond pulses, is very broad. Because the broad bandwidth is too broad for spectroscopy, it is necessary to take out the adequate spectrum to target samples. In the present study, we have developed the time-compensated monochromator to take out a single harmonic and characterized the temporal width and the spatial distribution of the selected harmonic pulses. Consequently, we found that the pulse duration of the 21st harmonic (photon energy 33 eV) was 11 fs and that the spatial diameter of the beam at focus was 57 μm.
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