2013 Fiscal Year Final Research Report
New material state realized by strong terahertz electric field
| Project/Area Number |
23244065
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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 |
Condensed matter physics I
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| Research Institution | Kyoto University |
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Principal Investigator |
TANAKA Koihicro 京都大学, 理学(系)研究科(研究院), 教授 (90212034)
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| Co-Investigator(Kenkyū-buntansha) |
HIRORI Hideki 京都大学, 物質-細胞統合システム拠点, 特定助教 (00512469)
ARIKAWA Takashi 京都大学, 大学院理学研究科, 助教 (70598490)
HIRORI Hideki 京都大学, 物質-細胞統合システム拠点, 特定助教 (30303803)
HISHIDA Masafumi 京都大学, 物質-細胞統合システム拠点, 特定研究員 (70519058)
BLANCHARD Francois 京都大学, 物質-細胞統合システム拠点, 特定研究員 (00571358)
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| Co-Investigator(Renkei-kenkyūsha) |
OGAWA Tetsuo 大阪大学, 大学院理学研究科, 教授 (50211123)
ISHIKAWA Akira 山梨大学, 医学工学総合研究部, 助教 (10508807)
TANI Shuntaro 京都大学, 物質-細胞統合システム拠点, 特定研究員 (80711572)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | 光物性 / テラヘルツ分光 / 高強度テラヘルツ光 |
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| Research Abstract |
In this study, we developed a strong terahertz light source to accelerate electrons in solids and to realize an extraordinary non-equilibrium electron system. In graphene and quantum well systems, we observed electrons are excited to the highly energetic state by the strong terahertz pulse and induce carrier multiplication via impact ionization process. In addition, we constructed a theory that can describe extremely nonlinear optical processes of electrons under strong terahertz light field, such as higher harmonic generation in solids.
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[Journal Article]2012
Author(s)
F. Blanchard, K. Ooi, T. Tanaka, A. Doi, and K. Tanaka
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Journal Title
Optics Express
Volume: 20
Pages: 19395-19403
Peer Reviewed
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