Dynamical control of electronic states using extremely strong terahertz light
| Project/Area Number |
26247052
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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 |
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| Co-Investigator(Kenkyū-buntansha) |
廣理 英基 京都大学, 物質－細胞統合システム拠点, 特定准教授 (00512469)
谷 峻太郎 東京大学, 物性研究所, 助教 (80711572)
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| Project Period (FY) |
2014-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥41,210,000 (Direct Cost: ¥31,700,000、Indirect Cost: ¥9,510,000)
Fiscal Year 2017: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2016: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
Fiscal Year 2015: ¥13,780,000 (Direct Cost: ¥10,600,000、Indirect Cost: ¥3,180,000)
Fiscal Year 2014: ¥16,380,000 (Direct Cost: ¥12,600,000、Indirect Cost: ¥3,780,000)
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| Keywords | テラヘルツ非線形光学 / テラヘルツ分光 / 非線形光学 / 半導体光学 / 超高速レーザー分光 / 高次高調波発生 / テラヘルツ光 / 単層半導体 / グラフェン / 半導体光物性 / 高強度テラヘルツ光 / 半導体 / 非線形分光 |
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| Outline of Final Research Achievements |
In order to observe extreme nonlinear optical phenomena in solids, we have constructed two high-intensity terahertz light sources: one is a short pulse source which spectrum includes high frequency components over 20 THz and the other is a tunable narrow-bandwidth (< 0.1 THz) source with peak frequency of about 1 THz. With the tunable THz light source, we have confirmed a huge Rabi-splitting of 1s exciton level and sub-cycle light modulation in the exciton absorption. With high frequency source with 60 THz in peak energy, we observed high-harmonic generation in monolayer MoS2 and graphene for the first time. The high harmonics generation has unique properties that comes from solid state nature of electrons, which is quite different from that of the atomic gas system. We proposed theoretical models for these extreme nonlinear effects in solids.
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Report
(4 results)
Research Products
(66 results)
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[Journal Article] Time-resolved observation of coherent excitonic nonlinear response with a table-top narrowband THz pulse wave2015
Author(s)
K. Uchida, H. Hirori, T. Aoki, C. Wolpert, T. Tamaya, K. Tanaka, T. Mochizuki, C. Kim, M. Yoshita, H. Akiyama, L. N. Pfeiffer and K. W. West
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Journal Title
Appl. Phys. Lett.
Volume: 107
Issue: 22
Pages: 221106-221106
DOI
Related Report
Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
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[Journal Article] High-Voltage Breakdown and the Gunn Effect in GaAs/AlGaAs Nanoconstrictions2015
Author(s)
R. Chen, W. Gao, X. Wang, G. R. Aizin, J. Mikalopas, T. Arikawa, K. Tanaka, D. B. Eason, G. Strasser, J. Kono, and J. P. Bird
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Journal Title
IEEE Transactions on Nanotechnology
Volume: 14
Issue: 3
Pages: 524-530
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Presentation] 動的遮蔽効果を伴う発光の空間不均一性の観測2015
Author(s)
寺尾顕一, 吉川尚孝, 田中智子, Francois Blanchard, Dmitry Turchinovich, 田中耕一郎
Organizer
日本物理学会2015年秋季大会
Place of Presentation
関西大学
Year and Date
2015-09-16
Related Report
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[Presentation] ime-resolved observation of excitonic dynamics under coherent terahertz excitation in GaAs quantum wells2015
Author(s)
K. Uchida, H. Hirori, T. Aoki, C. Worpert, K. Tanaka, T. Mochizuki, C. Kim, M. Yoshita, H. Akiyama, L. N. Pferffer, and K.W. West
Organizer
Photonic West 2015
Place of Presentation
San Francisco, USA
Year and Date
2015-02-07 – 2015-02-12
Related Report
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