Development of terahertz spectroscopy and imaging system by using continuous wave terahertz emission
Project/Area Number |
26600109
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Multi-year Fund |
Research Field |
Optical engineering, Photon science
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Research Institution | Osaka University |
Principal Investigator |
Nakajima Makoto 大阪大学, レーザーエネルギー学研究センタ, 准教授 (40361662)
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Project Period (FY) |
2014-04-01 – 2016-03-31
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Project Status |
Completed (Fiscal Year 2015)
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Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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Keywords | テラヘルツ波 / 光物性 / 狭帯域 / 半導体物性 / 光工学・量子光工学 / 応用光学・量子光工学 |
Outline of Final Research Achievements |
We have constructed the CW THz spectroscopy system with narrow spectrum width (~1.85 MHz) and broad tunable range (~3 THz), using two tunable external cavity diode lasers as mixing laser sources and a photoconductive antenna based on InGaAs as a THz emitter. Laser sources and the emitter are connected by optical fiber for flexible set up. The frequency feedback system with a thermally stabilized external cavity with the FSR of 484 MHz realized that the absolute frequency accuracy is sub GHz by the measurement of water vapor absorption. The frequency stabilization is 10 MHz in 10 minutes. We developed the CW THz spectrometer system in a dilution refrigerator with a magnet. The measurement of terahertz wave irradiation to two-dimensional electron system in GaAs was performed at the temperature of 4 K and the magnetic field of ~ 1Tesla.
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Report
(3 results)
Research Products
(59 results)
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[Journal Article] Dispersion, spatial growth rate, and start current of a Cherenkov free-electron laser with negative-index material2015
Author(s)
Y. Wang, Y. Wei, D. Li, K. Takano, M. Nakajima, X. Jiang, X. Tang, X. Shi, Y. Gong, J. Feng, and S. Miyamoto
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Journal Title
Phys. Plasma
Volume: 22
Issue: 8
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Presentation] High efficiency Multimode Laser Diode THz TDS systems using Laser Chaos and Super focusing with Metal V-grooved Wave guide2015
Author(s)
F. Kuwashima, T. Shisao, T. Kishibata, Y. Akamine, K. Iwao, M. Ooi, M. Tani, K. Kurihara, K. Yamamoto, T. Nagashima, M. Nakajima, and M. Hangyo
Organizer
The Second International Symposium on Frontiers in THz Technology(FTT2015)
Place of Presentation
Hamamatsu,Japan
Year and Date
2015-09-01
Related Report
Int'l Joint Research
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[Presentation] High Effective Generation And Detection Of THz Waves Using A Laser Chaos And A Super-focusing With Metal V--grooved Waveguides2015
Author(s)
F. Kuwashima, T. Shirao, T. Kishibata, Y. Akamine, N. Iwao, M. Ooi, M. Tani, K. Kurihara, K. Yamamoto, T. Nagashima, M. Nakajima, and M. Hangyo
Organizer
IRMMW-THz2015
Place of Presentation
Hong Kong
Year and Date
2015-08-25
Related Report
Int'l Joint Research
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[Presentation] Terahertz response of randomly connected checkerboard patterns2014
Author(s)
K. Takano, Y. Tanaka, A. Chahadih, A. Ghaddar, X. Hang, F. Vaurette, T. Akalin, F. Miyamaru, M. Nakajima, and M. Hangyo
Organizer
4th Japan-Korea Metamaterial forum
Place of Presentation
Osaka, Japan
Year and Date
2014-12-22 – 2014-12-24
Related Report
Invited
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[Presentation] Interactive Magnetic Coupling Between Spin Precession And Split-ring Resonator In The Terahertz Frequency2014
Author(s)
Takayuki Kurihara, Keita Yamaguchi, Keita Nakamura, Yudai Sekine, Ken-ichi Oto, Yuumi Saito, Makoto Nakajima, Hiroshi Watanabe, Tohru Suemoto
Organizer
The 39th International Conference on Infrared, Millimeter and THz Waves (IRMMW-THz 2014)
Place of Presentation
Tucson, Arizona, USA
Year and Date
2014-09-14 – 2014-09-19
Related Report
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[Presentation] Inductive-to-Capacitive Transition of Terahertz Responses between a Metal Meah and a Metal Cross-shape Array by Introducing Random Cuts2014
Author(s)
K. Takano, Y. Okui, H. Kitahara, A. Chahadih, A. Ghaddar, X. Han, F. Vaurette, T. Akalin, Y Sekine, M. Nakajima, and M. Hangyo
Organizer
the 5th International Conference on Metamaterials, Photonic Crystals and Plasmonics (META'14)
Place of Presentation
Nanyang Technological University (NTU), Singapore
Year and Date
2014-05-20 – 2014-05-23
Related Report
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