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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| ED | 2013-12-17 14:10 |
Miyagi | Research Institute of Electrical Communication Tohoku University | Ultrahigh Sensitive and Frequency-Tunable Terahertz Detection by Asymmetric Dual-Grating-Gate HEMTs Tetsuya Kawasaki, Shinya Hatakeyama, Yuki Kurita (Tohoku Univ.), Guillaume Ducournau (IEMN), Dominique Coquillat (Univ. Montpellier 2 & CNRS), Kengo Kobayashi, Akira Satou (Tohoku Univ.), Yahya M. Meziani (Univ. Salamanca), Vyacheslav. V. Popov (Kotelnikov Inst. Radio Eng. Electron), Wojciech Knap (Univ. Montpellier 2 & CNRS), Tetsuya Suemitsu, Taiichi Otsuji (Tohoku Univ.)  ED2013-107 |
We report on ultrahigh sensitive and frequency-tunable terahertz (THz) detectors by our original asymmetric dual-grating... [more] | ED2013-107 pp.97-100 |
| EST | 2013-05-10 13:00 |
Kanagawa | NTT Science and Core Technology Laboratory Group | Numerical study of terahertz two-dimensional plasmons in graphene Akira Satou, Victor Ryzhii (Tohoku Univ.), Vladimir Mitin, Fedir Vasko (Univ. at Buffalo), Taiichi Otsuji (Tohoku Univ.) EST2013-4 |
We develop a numerical model for simulation of plasmons in graphene with grating-gate structures, based on the Boltzmann... [more] | EST2013-4 pp.15-20 |
| MW, ED | 2013-01-18 14:55 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | AlGaN/GaN MIS-Gate HEMTs with SiCN Gate Stacks Kengo Kobayashi, Tomohiro Yoshida, Taiichi Otsuji, Ryuji Katayama, Takashi Matsuoka, Tetsuya Suemitsu (Tohoku Univ.) ED2012-126 MW2012-156 |
This paper reports AlGaN/GaN metal-insulator-semiconductor (MIS)-gate high electron mobility transistors (HEMTs) with a ... [more] | ED2012-126 MW2012-156 pp.75-78 |
| MW, ED | 2013-01-18 15:20 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | InGaAs HEMTs with T-gate electrodes formed by multi-layer SiCN molds Tomohiro Yoshida, Kengo Kobayashi, Taiichi Otsuji, Tetsuya Suemitsu (Tohoku Univ.) ED2012-127 MW2012-157 |
Recently, the gate lengths of HEMTs have been achieved below 0.1 $\mu$m. In general, T-gate electrodes are employed for ... [more] | ED2012-127 MW2012-157 pp.79-84 |
| ED | 2012-12-17 15:40 |
Miyagi | Tohoku University | Terahertz Population Inversion in Graphene by Optical Pulse Excitation Akira Satou, Victor Ryzhii, Yuki Kurita, Taiichi Otsuji (Tohoku Univ.) ED2012-98 |
We theoretically studied the nonequilibrium carrier relaxation dynamics and the terahertz population inversion in intrin... [more] | ED2012-98 pp.29-33 |
| ED | 2012-12-17 16:45 |
Miyagi | Tohoku University | [Invited Talk]
Future prospects of wireless communications using carrier frequencies from 300 GHz to 1THz Tadao Nagatsuma (Osaka Univ.), Taiichi Otsuji (Tohoku Univ.), Katsuhiro Ajito (NTT), Iwao Hosako (NICT) ED2012-100 |
[more] | ED2012-100 pp.39-44 |
| LQE, CPM, EMD, OPE, R | 2012-08-23 09:35 |
Miyagi | Tohoku Univ. | Plasma Instability in Two-Dimensional Electron Gas in Double-Grating-Gate HEMT Akira Satou, Hiromi Shida (Tohoku Univ.), Viacheslav V. Popov (RAS), Taiichi Otsuji (Tohoku Univ.) R2012-20 EMD2012-26 CPM2012-51 OPE2012-58 LQE2012-24 |
[more] | R2012-20 EMD2012-26 CPM2012-51 OPE2012-58 LQE2012-24 pp.1-4 |
| ED | 2012-07-27 11:50 |
Fukui | Fukui University | Graphene FET with Diamondlike Carbon Dielectrics Susumu Takabayashi, Meng Yang, Shuichi Ogawa, Hiroyuki Hayashi, Yuki Kurita, Yuji Takakuwa, Tetsuya Suemitsu, Taiichi Otsuji (Tohoku Univ.) ED2012-53 |
A graphene-channel field effect transistor with a diamondlike carbon (DLC) top-gate dielectric film is presented (DLC-GF... [more] | ED2012-53 pp.67-72 |
| ED, SDM | 2012-02-07 16:30 |
Hokkaido | Gain enhancement in graphene terahertz amplifier with resonant structure Yuya Takatsuka, Kazuhiro Takahagi, Eiichi Sano (Hokkaido Univ.), Victor Ryzhii (Univ. of Aizu), Taiichi Otsuji (Tohoku Univ.) ED2011-148 SDM2011-165 |
THz devices have been developed over the last decade to utilise THz waves for non-destructive sensing and high-speed wir... [more] | ED2011-148 SDM2011-165 pp.35-40 |
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| ED | 2011-12-15 10:05 |
Miyagi | Tohoku University | Ultrahigh Sensitive Plasmonic Terahertz Detector Based on Asymmetric Dual-Grating Gate InAlAs/InGaAs/InP HEMT Yudai Tanimoto, Stephane Boubanga-Tombet, Takayuki Watanabe (Tohoku Univ.), Yuye Wang, Hiroaki Minamide, Hiromasa Ito (RIKEN), Denis Fateev, Vyacheslav Popov (RAS), Dominique Coquillat, Wojciech Knap (Univ. Montpellie 2), Taiichi Otsuji (Tohoku Univ.) ED2011-110 |
We report on design fabrication and characterization of ultrahigh sensitive terahertz detectors based on asymmetric doub... [more] | ED2011-110 pp.57-61 |
| ED | 2011-12-15 11:10 |
Miyagi | Tohoku University | Observation of Terahertz 2D-Plasmon Modes in Graphene Ribbon Array Tetsuya Fukushima (Tohoku Univ.), Silvia Chan (UPenn), Stephene Boubanga Tombet (Tohoku Univ.), Victor I. Ryzhii (Aizu Univ.), Viacheslav V. Popov (RAS), Taiichi Otsuji (Tohoku Univ.) ED2011-112 |
The frequency of the plasma waves in 2-dimensional (2D) electron-hole system in graphene-layer systems can be tuned in t... [more] | ED2011-112 pp.69-73 |
| ED | 2011-12-15 13:40 |
Miyagi | Tohoku University | Stimulated Terahertz Emission from Optically Pumped Graphene Takayuki Watanabe, Stephane Boubanga Tombet, Tetsuya Fukushima, Akira Satou, Taiichi Otsuji (Tohoku Univ.), Victor Ryzhii (Univ. of Aizu) ED2011-114 |
We conduct time domain spectroscopy studies and show that graphene sheet amplifies an incoming terahertz field. The grap... [more] | ED2011-114 pp.79-83 |
| CPM, OPE, LQE, EMD | 2011-08-26 14:20 |
Hokkaido | Hokkaido Univ. | Room Temperature Terahertz Emission from coherent excitation of 2D plasmon Stephane Boubanga Tombet, Yudai Tanimoto, Taiichi Otsuji (Tohoku Univ.) EMD2011-55 CPM2011-99 OPE2011-90 LQE2011-53 |
We report on reflective electro-optic sampling measurements of TeraHertz emission from nanometer-gate-length InGaAs-base... [more] | EMD2011-55 CPM2011-99 OPE2011-90 LQE2011-53 pp.117-121 |
| ED | 2010-12-16 16:00 |
Miyagi | Tohoku University (Research Institute of Electrical Communication) | THz Amplifiers with Gain Medium and Field-enhancement Effect Yuya Takatsuka, Eiichi Sano (Hokkaido Univ.), Victor Ryzhii (Univ. of Aizu), Taiichi Otsuji (Tohoku Univ.) ED2010-162 |
THz devices have been developed over the last decade to utilise THz waves for non-destructive sensing and high-speed wir... [more] | ED2010-162 pp.25-29 |
| ED | 2010-12-16 16:25 |
Miyagi | Tohoku University (Research Institute of Electrical Communication) | Nonequilibrium Carrier Relaxation Dynamics in Optically Pumped Graphene and Population Inversion in Terahertz Range Akira Satou (Tohoku Univ.), Victor Ryzhii (Univ. of Aizu), Stephane Boubanga-Tombet, Taiichi Otsuji (Tohoku Univ.) ED2010-163 |
We study theoretically the population inversion in terahertz (THz) frequency in intrinsic graphene under optical pulse ... [more] |
ED2010-163 pp.31-34 |
| ED | 2010-12-16 16:50 |
Miyagi | Tohoku University (Research Institute of Electrical Communication) | Coherent and Tunable Terahertz Emission from Nano-metric Field Effect Transistor at Room Temperature Stephane Boubanga Tombet, Akira Satou (Tohoku Univ.), Victor Ryzhii (Univ. of Aizu), Taiichi Otsuji (Tohoku Univ.) ED2010-164 |
We report on reflective electro-optic sampling measurements of TeraHertz emission from nanometer-gate-length InGaAs-base... [more] | ED2010-164 pp.35-39 |
| ED, SDM | 2010-02-23 11:35 |
Okinawa | Okinawaken-Seinen-Kaikan | Detectors of Terahertz and Infrared Radiation Based on p-i-n Single- and Multiple Graphene Layer Structures Victor Ryzhii, Maxim Ryzhii (Univ. of Aizu), Taiichi Otsuji (Tohoku Univ.), Vladimir Mitin (Buffalo Univ.) ED2009-209 SDM2009-206 |
Detectors of terahertz and infrared radiation based on p-i-n graphene structures utilizing interband transitions are pro... [more] | ED2009-209 SDM2009-206 pp.77-80 |
| ED | 2009-11-30 09:25 |
Osaka | Osaka Science & Technology Center | Monte Carlo Analysis of Optical Pulse Response of Plasmon-Resonant Terahertz Emitter Kentaro Kubota, Eiichi Sano (Hokkaido Univ), Yahya Moubarak Meziani, Taiichi Otsuji (Tohoku Univ) ED2009-167 |
Terahertz(THz) radiation with feature of radio and optical waves has much interest due to its applications such as medic... [more] | ED2009-167 pp.41-45 |
| ED | 2009-11-30 09:50 |
Osaka | Osaka Science & Technology Center | Multichip Operation of Plasmon-Resonant Microchip Emitter for Broadband Terahertz Spectroscopic Measurement Takayuki Watanabe, Tsuneyoshi Komori, Tetsuya Suemitsu, Taiichi Otsuji (Tohoku Univ.) ED2009-168 |
We have experimentally observed the emission of broadband terahertz radiation with a microwatt power at room temperature... [more] | ED2009-168 pp.47-51 |
| ED | 2009-11-30 10:30 |
Osaka | Osaka Science & Technology Center | Observation of Coherent THz Emission in Optically Pumped Epitaxial Graphene Heterostructures Hiromi Karasawa, Takayuki Watanabe, Tsuneyoshi Komori (Tohoku Univ.), Maki Suemitsu (Tohoku Univ. /JST-CREST), Victor Ryzhii (Aizu Univ. /JST-CREST), Taiichi Otsuji (Tohoku Univ. /JST-CREST) ED2009-169 |
Graphene is a single-layer carbon-atomic honeycomb lattice crystal. Electrons and holes in graphene hold a linear disper... [more] | ED2009-169 pp.53-58 |
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