Fabrication of a pump-probe terahertz emission microscope and investigation of ultrafast electronic devices
| Project/Area Number |
23246066
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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 |
Electron device/Electronic equipment
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| Research Institution | Osaka University |
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Principal Investigator |
MURAKAMI Hironaru 大阪大学, レーザーエネルギー学研究センタ, 准教授 (30219901)
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| Co-Investigator(Kenkyū-buntansha) |
KAWAYAMA Iwao 大阪大学, レーザーエネルギー学研究センター, 准教授 (10332264)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥50,050,000 (Direct Cost: ¥38,500,000、Indirect Cost: ¥11,550,000)
Fiscal Year 2013: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Fiscal Year 2012: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Fiscal Year 2011: ¥34,190,000 (Direct Cost: ¥26,300,000、Indirect Cost: ¥7,890,000)
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| Keywords | テラヘルツ / 近接場光 / 顕微鏡 / 原子間力顕微鏡 / フェムト秒レーザー / 半導体光スイッチ / 半導体 / 時間領域分光 / キャリアダイナミクス / ナノサイエンス / 超高速デバイス |
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| Research Abstract |
We have fabricated a near field excitation laser terahertz emission microscope (LTEM) combined with an atomic force microscope (AFM) in order to evaluate optoelectronic devices with fine structures. In the combined system we introduced a special AFM cantilever with a narrow aperture of about 500 nm into an optical path of excitation femtosecond pulsed laser to generate near-field light to excite terahertz wave pulses. Using the fabricated system, we have succeeded in the generation of terahertz wave pulse from a bowtie antenna fabricated on a low temperature grown GaAs (LT-GaAs) by near field light excitation, and also succeeded in the simultaneous observation of LTEM and AFM images.
On the other hand, we have also succeeded in the high-sensitive detection of terahertz wave pulse by optimizing the antenna structure of photoconductive terahertz detector fabricated on LT-GaAs.
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Report
(4 results)
Research Products
(36 results)
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[Journal Article] Laser THz imaging system2014
Author(s)
Hironaru Murakami, Kazunori Serita, Yuki Maekawa, Shogo Fujiwara, Eiki Matsuda, Sunmi Kim, Iwao Kawayama and Masayoshi Tonouchi
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Journal Title
Journal of Physics D
Volume: 未定
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Peer Reviewed
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[Presentation] Terahertz time-domain spectroscopy of large-area graphene on various substrates2014
Author(s)
Iwao Kawayama, Makoto Ohshiro, Yuki Sano, Hironaru Murakami, James Allred, Minjie Wang, Junichiro Kono, Robert Vajtai, Pulickel Ajayan, Masayoshi Tonouchi
Organizer
APS March meeting 2014
Place of Presentation
Denver, USA
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[Presentation] Scanning Laser Terahertz Near-field Imaging System2012
Author(s)
K. Serita, H. Murakami, I. Kawayama, Y. Takahashi, M. Yoshimura, Y. Mori, J. Darmo, and M. Tonouchi
Organizer
Joint Meeting of JSAP Professional Group on THz Technology and IEICE Technology Group on THz Application Systems
Place of Presentation
Okinawa, Japan
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