Committee Memberships
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2014.12-Now
電子情報通信学会シリコンフォトニクス時限研究専門委員会 専門委員
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2014.12-Now
電子情報通信学会シリコンフォトニクス時限研究専門委員会 専門委員
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2016.06-2019.05
電子情報通信学会 和文論文誌C編集委員
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2016.06-2019.05
電子情報通信学会 和文論文誌C編集委員
Details of a Researcher
Updated on 2023/12/08
電子情報通信学会シリコンフォトニクス時限研究専門委員会 専門委員
電子情報通信学会シリコンフォトニクス時限研究専門委員会 専門委員
電子情報通信学会 和文論文誌C編集委員
電子情報通信学会 和文論文誌C編集委員
日本物理学会
The Institute of Electronics, Information and Communication Engineers
応用物理学会
Optical society, America
非線形光学効果
半導体レーザ
光エレクトロニクス
シリコンフォトニクス
半導体工学
石田實記念財団研究奨励賞
2014.11 石田寛記念財団 大容量光通信用シリコンフォトニック波長可変レーザに関する研究
第23回応用物理学会 講演奨励賞
2007.10 応用物理学会
Quantum dots and silicon photonics combine in broadband tunable laser
Newspaper, magazine
Laser focus world
2015.11
Tunable laser diode taps NIR for data transmission
Newspaper, magazine
Photonics Spectra
2015.08
波長可変、広範に 東北大 情通機構 小型レーザー開発
Newspaper, magazine
2015.05
東北大とNICT ヘテロジニアス波長可変レーザの開発に成功 超小型・広帯域光デ
Newspaper, magazine
電波タイムズ
2015.05
光ファイバー波長数2倍 東北大など レーザー部品開発
Newspaper, magazine
日経産業新聞
2015.05
1.55-µm Si-Photonics-Based Heterogeneous Tunable Laser Integrated with Highly Stacked QD-RSOA
A. Matsumoto, W. Masuda, K. Akahane, T. Umezawa, N. Yamamoto, T. Kita
2021 Conference on Lasers and Electro-Optics, CLEO 2021 - Proceedings 2021.05
Camera sensor platform for high speed video data transmission using a wideband electro-optic polymer modulator
Xiaoyang Cheng, Feng Qiu, Andrew M. Spring, Masaru Sasaki, Tsubasa Kashino, Masaaki Ozawa, Hideyuki Nawata, Tomohiro Kita, Okihiro Sugihara, Shiyoshi Yokoyama
Optics Express 27 ( 3 ) 1877 - 1883 2019.02
Two-Wavelength Tunable Laser Diode using a Quantum Dot SOA and a Silicon Photonic External Cavity
Tomohiro Kita, Atsushi Matsumoto, Naokatsu Yamamoto, Manuel Mendez-Astudillo, Hirohito Yamada
2018 IEEE International Semiconductor Laser Conference (ISLC) 2018-September 23 - 24 2018.09
Heterogeneous quantum dot/silicon photonics-based wavelength-tunable laser diode with a 44 nm wavelength-tuning range
Tomohiro Kita, Naokatsu Yamamoto, Atsushi Matsumoto, Tetsuya Kawanishi, Hirohito Yamada
JAPANESE JOURNAL OF APPLIED PHYSICS 55 ( 4 ) 04EH11-1 - 04EH11-4 2016.04 [Refereed]
Instability of Silicon Photonic Wavelength Tunable Laser Diodes due to the Nonlinear Optical Effect of Silicon
Tomohiro Kita, Hirohito Yamada
2016 INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE (ISLC) 2016 [Refereed]
Quantum dots and silicon photonics combine in broadband tunable laser
Tomohiro Kita, Naokatsu Yamamoto
LASER FOCUS WORLD 51 ( 11 ) 45 - 48 2015.11 [Refereed]
Optimum waveguide-core size for reducing device property distribution of Si-wire waveguide devices
Munetoshi Soma, Tomohiro Kita, Yuichiro Tanushi, Munehiro Toyama, Miyoshi Seki, Nobuyuki Yokoyama, Minoru Ohtsuka, Hirohito Yamada
JAPANESE JOURNAL OF APPLIED PHYSICS 54 ( 4 ) 04DG03 2015.04 [Refereed]
Silicon Photonic Hybrid Ring-Filter External Cavity Wavelength Tunable Lasers
Naoki Kobayashi, Kenji Sato, Masahiko Namiwaka, Keisuke Yamamoto, Shinya Watanabe, Tomohiro Kita, Hirohito Yamada, Hiroyuki Yamazaki
JOURNAL OF LIGHTWAVE TECHNOLOGY 33 ( 6 ) 1241 - 1246 2015.03 [Refereed]
Wide-band Wavelength Tunable Laser Diode with Si Photonic Filter
Tomohiro Kita, Rui Tang, Hirohito Yamada
2014 24TH IEEE INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE (ISLC 2014) 149 - 150 2014 [Refereed]
High Output Power and Narrow Linewidth Silicon Photonic Hybrid Ring-Filter External Cavity Wavelength Tunable Lasers
K. Sato, N. Kobayashi, M. Namiwaka, K. Yamamoto, T. Kita, H. Yamada, H. Yamazaki
2014 EUROPEAN CONFERENCE ON OPTICAL COMMUNICATION (ECOC) 33 1241 - 1244 2014 [Refereed] [Invited]
Highly-stabilized operation of Si photonics wavelength tunable laser diode
Tomohiro Kita, Keita Nemoto, Hirohito Yamada
Extended abstract of Solid State Device and Materials 2013.09 [Refereed]
Analysis of the Nonlinear Optical Parameter of ZnO Channel Waveguides
Edgar Yoshio Morales Teraoka, Tomohiro Kita, Daniel H. Broaddus, Atsushi Tsukazaki, Masashi Kawasaki, Alexander L. Gaeta, Hirohito Yamada
JAPANESE JOURNAL OF APPLIED PHYSICS 50 ( 4 ) 04DG01 2011.04 [Refereed]
Self-phase modulation at visible wavelengths in nonlinear ZnO channel waveguides
Edgar Yoshio Morales Teraoka, Daniel H. Broaddus, Tomohiro Kita, Atsushi Tsukazaki, Masashi Kawasaki, Alexander L. Gaeta, Hirohito Yamada
APPLIED PHYSICS LETTERS 97 ( 7 ) 71105 - 71107 2010.08 [Refereed]
Non-linear optical ZnO waveguides
モラレス 芳男, 北 智洋, 塚崎 敦, 川崎 雅司, 大寺 康夫, 山田 博仁
IEICE Technical Report OPE2008 ( 143 ) 35 - 40 2008.12
M. Watanabe, T. Kita, T. Fukumura, A. Ohtomo, K. Ueno, M. Kawasaki
APPLIED SURFACE SCIENCE 254 ( 3 ) 777 - 780 2007.11 [Refereed]
Nonmagnetic impurity effects in MgB2
K Watanabe, T Kita
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 73 ( 8 ) 2239 - 2244 2004.08 [Refereed]
Observation of e(2)/h conductance steps in a side-gate point contact on In0.75Ga0.25As/In0.75Al0.25As heterostructure
T Kita, S Gozu, Y Sato, S Yamada
JOURNAL OF SUPERCONDUCTIVITY 16 ( 2 ) 327 - 329 2003.04 [Refereed]
Conductance fluctuations in quantum wires formed at spin-splitting narrow gap heterojunctions
S Yamada, Y Sato, T Kita, S Gozu
COMPOUND SEMICONDUCTORS 2001 ( 170 ) 345 - 349 2002 [Refereed]
Ballistic spin transport in four-terminal NiFe/In(0.7)5Ga(0.25)As structure
Y Sato, S Gozu, T Kita, S Yamada
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS 40 ( 10B ) L1093 - L1096 2001.10 [Refereed]
Residual strain dependence of zero field spin-splitting in high indium content metamorphic InGaAs/InAlAs modulation doped heterostructures
S Gozu, T Kita, H Sato, Y Sato, K Fujii, T Ohyama, S Yamada
PROCEEDINGS OF THE 10TH INTERNATIONAL CONFERENCE ON NARROW GAP SEMICONDUCTORS AND RELATED SMALL ENERGY PHENOMENA, PHYSICS AND APPLICATIONS 2 42 - 44 2001 [Refereed]
Electrical spin-injection into a two-dimensional electron gas
Y Sato, S Gozu, T Kita, S Yamada
PROCEEDINGS OF THE 10TH INTERNATIONAL CONFERENCE ON NARROW GAP SEMICONDUCTORS AND RELATED SMALL ENERGY PHENOMENA, PHYSICS AND APPLICATIONS 2 248 - 250 2001 [Refereed]
シリコンフォトニクスチップを外部共振器とした機能性レーザの開発
電子情報通信学会
Presentation date: 2017.09
Heterogeneous Lasers with Silicon Photonic External Cavity
Tomohiro Kita, Shotaro Takei, Atsushi Matsumoto, Naokatsu Yamamoto, Hirohito Yamada
応用物理学会ーOSA joint symposia
Presentation date: 2017.09
Silicon Photonic Wavelength Tunable Lasers for high-capacity optical communication system
Optical Fiber Communication Conference and Exhibition (OFC) 2017 (United States Los Angeles)
Presentation date: 2017.03
Heterogeneous silicon photonic wavelength tunable laser diodes
The 6th Annual World Congress of Nano Science and Technology-2016(Nano S&T-2016) (Singapore)
Presentation date: 2016.10
Ultra-compact Wavelength Tunable Quantum Dot Laser with Silicon Photonic External Cavity
Tomohiro Kita, Naokatsu Yamamoto, Tetsuya Kawanishi, Hirohito Yamada
The Conference on Lasers and Electro-Optics(CLEO) (United States サンノゼ)
Presentation date: 2015.05
InAs 量子ドット光増幅器を用いた1.2μm 帯シリコンフォトニック波長可変レーザ
北 智洋, 山本 直克, 川西 哲也, 山田 博仁
第62回応用物理学会春季学術講演会 (平塚)
Presentation date: 2015.03
TiO2微粒子ポリマを用いたシリコン細線光導波路のアサーマル化
第62回応用物理学会春季学術講演会 (平塚市)
Presentation date: 2015.03
ハイブリッド集積シコンフォトニクスリングフィルタ外部共振器型波長可変レーザの狭線幅及び高出力特性
佐藤 健二, 小林 直樹, 波若 雅彦, 山本 圭介, 渡邊 真也, 北 智洋, 山田 博仁, 山崎 裕幸
電子情報通信学会 OPE12月研究会
Presentation date: 2014.12
Silicon Photonic Devices for a Large Capacity Optical Communication system
Tomohiro Kita, Tang Rui, Munetoshi Soma, Hirohito Yamada
The 4th International Symposium on Photonics and Electronics Convergence (JAPAN 東京)
Presentation date: 2014.11
ATHERMAL SILICON PHOTONIC DEVICES USING HYBRID POLYMER CLADDING
Freddy Susanto Tan, Okihiro Sugihara, Hirohito Yamada, Toshikuni Kaino
The 23rd International Conference on Plastic OpticalFiber (JAPAN 日吉)
Presentation date: 2014.10
RECENT PROGRESS OF OPTICAL INTERCONNECT DEVICES USING PHOTONIC POLYMERS
Sugihara, T. Kita, D. Inoue, F. S. Tan, A. Hattori, A. Kawasaki, M. Sato, T. Yamashita, M. Mizuno, S. Okada, M. Kagami, M.Tsuchimori, O. Watanabe, H. Yamada, T. Kaino
The 23rd International Conference on Plastic Optical Fibers (JAPAN 日吉)
Presentation date: 2014.10
高出力シリコンフォトニック波長可変レーザ
唐 睿, 山田博仁
電子情報通信学会2014年ソサイエティ大会 (JAPAN 徳島)
Presentation date: 2014.09
広波長可変帯域を持つシリコンフォトニックレーザ
唐 睿, 山田 博仁
第75回応用物理学秋季学術講演会 (JAPAN 札幌)
Presentation date: 2014.09
1.Wide-band Wavelength Tunable Laser Diode with Si Photonic Filter
Tang Rui, Hirohito Yamada
IEEE International Conference of Semiconductor Laser (Spain パルマ)
Presentation date: 2014.09
3. Si Photonic Wavelength Tunable Laser Diode with the Phase Shifter of Longitudinal Mode
Tang Rui, Hirohito Yamada
IEEE Group ⅣPhotonics (France パリ)
Presentation date: 2014.08
狭線幅シリコンフォトニック波長可変レーザモジュール
唐 睿, 山田博仁
電子情報通信学会LQE研究会 (JAPAN 小樽)
Presentation date: 2014.08
高非線形TiO2光導波路による広波長帯域光発生
内島晃司, 藪野正裕, 逢坂 崇, 片山竜二, 枝松圭一, 山田博仁
電子情報通信学会LQE研究会 (JAPAN 東京)
Presentation date: 2014.06
デジタルコヒーレント通信用シリコンフォトニック波長可変レーザ
フォトニックデバイス・応用技術研究会 (JAPAN 東京)
Presentation date: 2014.05
シリコンフォトニック波長可変レーザ
唐 睿, 根本景太, 山田博仁
電子情報通信学会2014年総合大会 (JAPAN 新潟)
Presentation date: 2014.03
Tunable Dual-Wavelength Heterogeneous Quantum Dot Laser Diode with a Silicon External Cavity
Tomohiro Kita, Atsushi Matsumoto, Naokatsu Yamamoto, Hirohito Yamada
Journal of Lightwave Technology 36 ( 2 ) 219 - 224 2018.01
Demonstration of 1-μm-band Si-photonics-based quantum dot heterogeneous tunable laser
A. Matsumoto, K. Akahane, T. Umezawa, N. Yamamoto, H. Yamada, T. Kita
Optics InfoBase Conference Papers 2018 2018
Silicon photonic wavelength tunable laser diode with low loss direct heating phase shifter
Tomohiro Kita, Yuto Chiba, Hirohito Yamada
14th International Conference on Group IV Photonics, GFP 2017 125 - 126 2017.10
Heterogeneous lasers with silicon photonic external cavity
Tomohiro Kita, Shotaro Takei, Atsushi Matsumoto, Naokatsu Yamamoto, Hirohito Yamada
Optics InfoBase Conference Papers Part F78-JSAP 2017 2017.01
Differential frequency tunable Dual-Mode heterogeneous QD laser with Si PIC
A. Matsumoto, T. Umezawa, K. Akahane, N. Yamamoto, H. Yamada, T. Kita
Optics InfoBase Conference Papers 2017 2017
Silicon Photonic Wavelength-Tunable Lasers for High-Capacity Optical Communication Systems
Tomohiro Kita, Hiroyuki Yamazaki, Naokatsu Yamamoto, Hirohito Yamada
2017 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXHIBITION (OFC) Part F40-OFC 2017 2017
Quantum-dot-based advanced photonic devices and its applications
A. Matsumoto, K. Akahane, T. Umezawa, T. Kita, K. Utaka, N. Yamamoto
Optics InfoBase Conference Papers 2017 2017
Silicon Photonic Wavelength-Tunable Lasers for High-Capacity Optical Communication Systems
Tomohiro Kita, Hiroyuki Yamazaki, Naokatsu Yamamoto, Hirohito Yamada
2017 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXHIBITION (OFC) Part F40-OFC 2017 2017
Quantum-dot-based advanced photonic devices and its applications
A. Matsumoto, K. Akahane, T. Umezawa, T. Kita, K. Utaka, N. Yamamoto
Optics InfoBase Conference Papers 2017 2017
Differential frequency tunable Dual-Mode heterogeneous QD laser with Si PIC
A. Matsumoto, T. Umezawa, K. Akahane, N. Yamamoto, H. Yamada, T. Kita
Optics InfoBase Conference Papers 2017 1 - 2 2017
Proposal of optical carrier converter by using Raman scattering in silicon photonic wire waveguide
116 ( 349 ) 29 - 32 2016.12
Tomohiro Kita, Hirohito Yamada
Conference Digest - IEEE International Semiconductor Laser Conference 2016.12
Tomohiro Kita, Rui Tang, Hirohito Yamada
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS 22 ( 6 ) 2016.11
Tomohiro Kita, Naokatsu Yamamoto, Atsushi Matsumoto, Tetsuya Kawanishi, Hirohito Yamada
JAPANESE JOURNAL OF APPLIED PHYSICS 55 ( 4 ) 2016.04
Advanced photonic ICT devices and their system applications using quantum-dot technology
Naokatsu Yamamoto, Kouichi Akahane, Toshimasa Umezawa, Atsushi Matsumoto, Atsushi Kanno, Tetsuya Kawanishi, Tetsuya Kawanishi, Tomohiro Kita, Hirohito Yamada
Asia Communications and Photonics Conference, ACPC 2015 2015.12
Ultra-compact wavelength-tunable quantum-dot laser with silicon-photonics double ring filter
Tomohiro Kita, Naokatsu Yamamoto, Tetsuya Kawanishi, Hirohito Yamada
APPLIED PHYSICS EXPRESS 8 ( 6 ) 2015.06
シリコンフォトニクスを用いたコヒーレント光通信用狭線幅波長可変レーザの開発
北 智浩
光技術コンタクト2015年4月号 53 ( 4 ) 13 - 19 2015.04
Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)
Rui Tang, Tomohiro Kita, Hirohito Yamada
OPTICS LETTERS 40 ( 7 ) 1504 - 1507 2015.04
Optimum waveguide-core size for reducing device property distribution of Si-wire waveguide devices
Munetoshi Soma, Tomohiro Kita, Yuichiro Tanushi, Munehiro Toyama, Miyoshi Seki, Nobuyuki Yokoyama, Minoru Ohtsuka, Hirohito Yamada
JAPANESE JOURNAL OF APPLIED PHYSICS 54 ( 4 ) 2015.04
C-3-25 Narrow Spectral Linewidth Silicon Photonic Wavelength Tunable Laser with Highly Asymmetric Mach-Zehnder Interferometer
Tang Rui, Kita Tomohiro, Yamada Hirohito
Proceedings of the IEICE General Conference 2015 ( 1 ) 149 - 149 2015.02
Ultra-compact Wavelength Tunable Quantum Dot Laser with Silicon Photonic External Cavity
Tomohiro Kita, Naokatsu Yamamoto, Tetsuya Kawanishi, Hirohito Yamada
2015 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) 2267 2015
Ultra-compact Wavelength Tunable Quantum Dot Laser with Silicon Photonic External Cavity
Tomohiro Kita, Naokatsu Yamamoto, Tetsuya Kawanishi, Hirohito Yamada
2015 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) 2015-August 2267 2015
Demonstration of Silicon Photonic Hybrid Ring-Filter External Cavity Wavelength Tunable Lasers
K. Sato, N. Kobayashi, M. Namiwaka, K. Yamamoto, S. Watanabe, T. Kita, H. Yamada, H. Yamazaki
ECOC 2015 41ST EUROPEAN CONFERENCE ON OPTICAL COMMUNICATION 2015-November 2015
Silicon Photonic Wavelength Tunable Laser with Highly Asymmetric Mach-Zehnder Interferometer
Tang Rui, Kita Tomohiro, Yamada Hirohito
Technical report of IEICE. OPE 114 ( 377 ) 7 - 10 2014.12
Silicon Photonic Wavelength Tunable Laser with Highly Asymmetric Mach-Zehnder Interferometer
Tang Rui, Kita Tomohiro, Yamada Hirohito
Technical report of IEICE. LQE 114 ( 378 ) 7 - 10 2014.12
Wide-band wavelength tunable laser diode with si photonic filter
Tomohiro Kita, Rui Tang, Hirohito Yamada
Conference Digest - IEEE International Semiconductor Laser Conference 149 - 150 2014.12
Rui Tang, Tomohiro Kita, Hirohito Yamada
Conference Digest - IEEE International Semiconductor Laser Conference 96 - 97 2014.12
C-3-24 Narrow Spectral Linewidth and High Output Power Silicon Photonic Wavelength Tunable Laser Diode
Kita Tomohiro, Tang Rui, Yamada Hirohito
Proceedings of the Society Conference of IEICE 2014 ( 1 ) 121 - 121 2014.09
Narrow spectral linewidth Silicon photonic wavelength tunable laser diode module
Kita Tomohiro, Tang Rui, Yamada Hirohito
IEICE technical report. Component parts and materials 114 ( 185 ) 83 - 86 2014.08
Wide Band Wavelength Generation in Nonlinear TiO_2 Waveguide
Kita Tomohiro, Uchijima Koji, Yabuno Masahiro, Aisaka Takashi, Katayama Ryuji, Edamatsu Keiichi, Yamada Hirohito
Technical report of IEICE. OPE 114 ( 97 ) 11 - 14 2014.06
Long external cavity Si photonic wavelength tunable laser diode
Tomohiro Kita, Keita Nemoto, Hirohito Yamada
JAPANESE JOURNAL OF APPLIED PHYSICS 53 ( 4 ) 2014.04
CI-2-3 Optical Coupler in Siliconphotonics
Yamada Hirohito, Nara Masaki, Kita Tomohiro
Proceedings of the IEICE General Conference 2014 ( 1 ) "SS - 13"-"SS-14" 2014.03
C-3-79 Si-wire Waveguide Ring Resonator Type Tunable Laser Diodes with Phase Control Mechanism
Tang Rui, Kita Tomohiro, Nemoto Keita, Sawada Nobuyuki, Yamada Hirohito
Proceedings of the IEICE General Conference 2014 ( 1 ) 234 - 234 2014.03
C-4-18 Silicon Photonic Wavelength Tunable Laser Diode
Kita Tomohiro, Tang Rui, Nemoto Keita, Yamada Hirohito
Proceedings of the IEICE General Conference 2014 ( 1 ) 254 - 254 2014.03
K. Sato, N. Kobayashi, M. Namiwaka, K. Yamamoto, T. Kita, H. Yamada, H. Yamazaki
2014 EUROPEAN CONFERENCE ON OPTICAL COMMUNICATION (ECOC) 2014
Athermal Silicon photonic devices using hybrid polymer cladding
Tomohiro Kita, Freddy Susanto Tan, Okihiro Sugihara, Hirohito Yamada, Toshikuni Kaino
POF 2014 - 23rd International Conference on Plastic Optical Fibers, Proceedings 272 - 275 2014.01
Si Photonic Wavelength Tunable Laser Diode with the Phase Shifter of Longitudinal Mode
Tomohiro Kita, Rui Tang, Keita Nemoto, Hirohito Yamada
2014 IEEE 11TH INTERNATIONAL CONFERENCE ON GROUP IV PHOTONICS (GFP) 209 - 210 2014
Recent progress of optical interconnect devices using photonic polymers
O. Sugihara, T. Kita, D. Inoue, F. S. Tan, A. Hattori, A. Kawasaki, M. Sato, T. Yamashita, M. Mizuno, S. Okada, M. Kagami, M. Tsuchimori, O. Watanabe, H. Yamada, T. Kaino
POF 2014 - 23rd International Conference on Plastic Optical Fibers, Proceedings 87 2014.01
Si photonic wavelength tunable laser diode for digital coherent optical communication
T. Kita, K. Nemoto, K. Watanabe, H. Yamazaki, H. Yamada
2013 18th OptoElectronics and Communications Conference Held Jointly with 2013 International Conference on Photonics in Switching, OECC/PS 2013 2013.10
KITA Tomohiro, NEMOTO Keita, YAMADA Hirohito
Technical report of IEICE. LQE 113 ( 264 ) 85 - 88 2013.10
KITA Tomohiro, NEMOTO Keita, YAMADA Hirohito
Technical report of IEICE. OPE 113 ( 263 ) 85 - 88 2013.10
Narrow spectral linewidth wavelength tunable laser diode with Si-wire waveguide ring resonators and a MZI filter
Nemoto Keita, Kita Tomohiro, Yamada Hirohito
Proceedings of the Society Conference of IEICE 2013 ( 1 ) 172 - 172 2013.09
Silicon photonics devices on 300 mm wafer fabricated by using ArF immersion lithography
KITA Tomohiro, TANUSHI Yuichiro, NARA Masaki, HIRANO Syu, TOYAMA Munehiro, SEKI Miyoshi, KOSHINO Keiji, YOKOYAMA Nobuyuki, OHTSUKA Minoru, SUGIYAMA Akinobu, ISHITSUKA Eiichi, SANO Tsukuru, HORIKAWA Tsuyoshi, YAMADA Hirohito
Technical report of IEICE. LQE 113 ( 100 ) 1 - 5 2013.06
Nonlinear optical photonic crystal waveguide with TiO2 material
Koji Uchijima, Tomohiro Kita, Hirohito Yamada
OXIDE-BASED MATERIALS AND DEVICES IV 8626 2013
Anomalous localization modes in Bragg-grating based on high index-difference waveguide
Tomohiro Kita, Koji Uchijima, Hirohito Yamada
SILICON PHOTONICS VIII 8629 2013
Narrow spectral linewidth and high output power Si photonic wavelength tunable laser diode
Tomohiro Kita, Keita Nemoto, Hirohito Yamada
IEEE International Conference on Group IV Photonics GFP 152 - 153 2013
Yuichiro Tanushi, Tomohiro Kita, Munehiro Toyama, Miyoshi Seki, Keiji Koshino, Nobuyuki Yokoyama, Minoru Ohtsuka, Akinobu Sugiyama, Eiichi Ishitsuka, Tsukuru Sano, Tsuyoshi Horikawa, Hirohito Yamada
IEEE International Conference on Group IV Photonics GFP 105 - 106 2013
KITA Tomohiro, NEMOTO Keita, YAMADA Hirohito
IEICE technical report. Reliability 112 ( 180 ) 111 - 114 2012.08
Narrow-Spectral-Linewidth Wavelength-Tunable Laser Diode with Si Wire Waveguide Ring Resonators
Keita Nemoto, Tomohiro Kita, Hirohito Yamada
APPLIED PHYSICS EXPRESS 5 ( 8 ) 2012.08
Analysis of Phase Matching Conditions for Generating Second Harmonic in ZnO Channel Waveguides
Yuta Taira, Tomohiro Kita, Edgar Yoshio Morales Teraoka, Hirohito Yamada
JAPANESE JOURNAL OF APPLIED PHYSICS 51 ( 4 ) 2012.04
C-3-44 Narrow spectral linewidth wavelength tunable laser diodes consisting of Si-wire waveguide ring resonators wavelength filter
Nemoto Keita, Kita Tomohiro, Yamada Hirohito
Proceedings of the IEICE General Conference 2012 ( 1 ) 193 - 193 2012.03
Narrow spectral linewidth wavelength tunable laser with Si photonic-wire waveguide ring resonators
Keita Nemoto, Tomohiro Kita, Hirohito Yamada
IEEE International Conference on Group IV Photonics GFP 216 - 218 2012
C-3-48 Analysis of ring-resonator wavelength filters with silicon-wire waveguides for narrow-spectrum wavelength-tunable laser diodes
Kikuchi Kenji, Suzuki Ken, Kita Tomohiro, Yamada Hirohito
Proceedings of the IEICE General Conference 2011 ( 1 ) 223 - 223 2011.02
Wavelength Tunable Laser Diodes with Si-Wire Waveguide Ring Resonator Wavelength Filters
Ken Suzuki, Tomohiro Kita, Hirohito Yamada
SILICON PHOTONICS VI 7943 2011
Variation of optical properties by the crystalline phase transition of polycrystalline silicon
Hidenori Iwata, Tomohiro Kita, Hirohito Yamada
SILICON PHOTONICS VI 7943 2011
Fabrication of ZnO channel waveguides for nonlinear optical applications
Edgar Yoshio Morales Teraoka, Tomohiro Kita, Atsushi Tsukazaki, Masashi Kawasaki, Hirohito Yamada
OXIDE-BASED MATERIALS AND DEVICES II 7940 2011
Nonlinear optical waveguides with rutile TiO(2)
Koichi Abe, Edgar Yoshio Morales Teraoka, Tomohiro Kita, Hirohito Yamada
OXIDE-BASED MATERIALS AND DEVICES II 7940 2011
Second and Third-Order Nonlinear Optical Effects in ZnO Channel Waveguides
Tomohiro Kita, Yoshio Morales Teraoka, Yoshitomo Okawachi, Atsushi Tsukazaki, Masashi Kawasaki, Alexander L. Gaeta, Hirohito Yamada
2011 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) 2011
Zero photonic band-gap structure in Si photonic-wire Bragg-grating
Tomohiro Kita, Hirohito Yamada
IEEE International Conference on Group IV Photonics GFP 133 - 135 2011
Optical crossing by hybrid Si-wire/silica waveguides
Younosuke Wakayama, Tomohiro Kita, Hirohito Yamada
IEEE International Conference on Group IV Photonics GFP 305 - 307 2011
Second and Third-Order Nonlinear Optical Effects in ZnO Channel Waveguides
Tomohiro Kita, Yoshio Morales Teraoka, Yoshitomo Okawachi, Atsushi Tsukazaki, Masashi Kawasaki, Alexander L. Gaeta, Hirohito Yamada
2011 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) 2011
C-3-14 Analysis of Si photonic-wire waveguide ring resonators filter for wavelength tunable laser
Suzuki Ken, Kita Tomohiro, Yamazaki Hiroyuki, Yamada Hirohito
Proceedings of the Society Conference of IEICE 2010 ( 1 ) 135 - 135 2010.08
Self-phase modulation at visible wavelengths in nonlinear ZnO channel waveguides
Edgar Yoshio Morales Teraoka, Daniel H. Broaddus, Tomohiro Kita, Atsushi Tsukazaki, Masashi Kawasaki, Alexander L. Gaeta, Hirohito Yamada
APPLIED PHYSICS LETTERS 97 ( 7 ) 2010.08
ZnO Channel Waveguides for Nonlinear Optical Applications
Edgar Yoshio Morales Teraoka, Tomohiro Kita, Atsushi Tsukazaki, Masashi Kawasaki, Yasuo Ohtera, Hirohito Yamada
JAPANESE JOURNAL OF APPLIED PHYSICS 49 ( 4 ) 2010
Experimental and numerical analysis study of 1-D photonic crystal in Si photonic-wire waveguides
Tomohiro Kita, Hirohito Yamada
Proceedings of SPIE - The International Society for Optical Engineering 7606 2010
Photonic band-gap anomaly in SOI photonic-wire Bragg-grating filter
Tomohiro Kita, Ryota Ishikawa, Hirohito Yamada
2010 7TH IEEE INTERNATIONAL CONFERENCE ON GROUP IV PHOTONICS (GFP) 237 - 239 2010
Practical integration method of active devices on SOI photonic integrated circuits.
Tomohiro Kita, Masahiro Abe, Yasuo Ohtera, Hirohito Yamada
2010 7TH IEEE INTERNATIONAL CONFERENCE ON GROUP IV PHOTONICS (GFP) 275 - 277 2010
Numerical analysis of bending loss for Si photonic-wire waveguides
HOKAMA Yohei, KITA Tomohiro, OHTERA Yasuo, YAMADA Hirohito
Technical report of IEICE. OME 109 ( 283 ) 49 - 54 2009.11
Study of optical coupling between Si photonic-wire waveguides and laser diode on SOI
ABE Masahiro, MIYAMURA Satoshi, NAKAMURA Koji, KITA Tomohiro, OHTERA Yasuo, YAMADA Hirohito
Technical report of IEICE. OME 109 ( 283 ) 55 - 60 2009.11
塚崎 敦, 大友 明, 北 智洋, 大野 裕三, 大野 英男
固体物理 499 ( 42 ) 559 - 567 2007.09
Article, review, commentary, editorial, etc. (scientific journal)
ZnOの量子ホール効果
大友明, 塚崎敦, 北智洋, 大野裕三, 大野英男, 川崎雅司
応用電子物性分科会誌 13 ( 2 ) 73 - 78 2007.02
Article, review, commentary, editorial, etc. (other)
(In,Ga)As gated-vertical quantum dot with an Al2O3 insulator
T. Kita, D. Chiba, Y. Ohno, H. Ohno
APPLIED PHYSICS LETTERS 90 ( 6 ) 2007.02
M. Kohda, T. Kita, T. Kita, Y. Ohno, Y. Ohno, F. Matsukura, F. Matsukura, H. Ohno, H. Ohno
Applied Physics Letters 89 2006.07
D. Chiba, T. Kita, F. Matsukura, H. Ohno
Journal of Applied Physics 99 2006.05
T. Kita, S. Gozu, Y. Sato, S. Yamada
Journal of Superconductivity and Novel Magnetism 16 327 - 329 2003.12
Rashba Effects in diffusive quantum wires made at high In-content InGaAs/InAlAs
Kakegawa T., Kita T., Akabori S., Yamada S.
Meeting abstracts of the Physical Society of Japan 58 ( 2 ) 575 - 575 2003.08
S Yamada, T Kikutani, S Gozu, Y Sato, T Kita
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES 13 ( 2-4 ) 815 - 818 2002.03
Y Sato, S Gozu, T Kita, S Yamada
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES 12 ( 1-4 ) 399 - 402 2002.01
Ballistic spin transport in four-terminal NiFe/In(0.7)5Ga(0.25)As structure
Y Sato, S Gozu, T Kita, S Yamada
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS 40 ( 10B ) L1093 - L1096 2001.10
Characterization of high indium content metamorphic InGaAs/InAlAs modulation-doped heterostructures
S Gozu, T Kita, Y Sato, S Yamada, M Tomizawa
JOURNAL OF CRYSTAL GROWTH 227 155 - 160 2001.07
Y Sato, T Kita, S Gozu, S Yamada
JOURNAL OF APPLIED PHYSICS 89 ( 12 ) 8017 - 8021 2001.06
Y Sato, S Gozu, T Kita, S Yamada
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES 10 ( 1-3 ) 77 - 80 2001.05
T Kita, Y Sato, S Gozu, S Yamada
PHYSICA B 298 ( 1-4 ) 65 - 69 2001.04
S Gozu, T Kita, H Sato, S Yamada
2001 INTERNATIONAL CONFERENCE ON INDIUM PHOSPHIDE AND RELATED MATERIALS, CONFERENCE PROCEEDINGS 55 - 58 2001
Shin-Ichiro Gozu, Tomohiro Kita, Tomoyuki Kikutani, Syoji Yamada
Journal of Crystal Growth 227 ( 228 ) 161 - 166 2001
高い環境耐性を有するキャリアコンバータ技術の研究開発
ナノハイブリッド電気光学ポリマーを用いた光インターコネクト技術
狭線幅波長可変レーザの開発
シリコンフォトニック波長可変レーザを用いた医療イメージング用光源の開発
大容量光通信用高機能シリコンフォトニック波長可変レーザの開発
ナノハイブリッド電気光学ポリマーを用いた光インターコネクト技術
次世代コヒーレント光通信用 超小型・狭線幅シリコンフォトニクス波長可変レーザモジュールの開発
シリコンフォトニクスを用いたデジタル・コヒーレント光通信用波長可変レーザの開発
局所レーザー加熱を用いたSi細線光導波路デバイスのトリミング技術の開発
省電力ネットワーク実現のためのスロット型Si細線光導波路の機能集積化の研究
Si光導波路の界面化学反応を利用した機能性光学デバイスの研究
Research on Integrated Optical Devices
Graduate School of Advanced Science and Engineering
2023 full year
Research on Integrated Optical Devices
Graduate School of Advanced Science and Engineering
2023 full year
Master's Thesis (Department of Pure and Applied Physics)
Graduate School of Advanced Science and Engineering
2023 full year
Master's Thesis (Department of Pure and Applied Physics)
Graduate School of Advanced Science and Engineering
2023 full year
Seminar on Integrated Optical Devices D
Graduate School of Advanced Science and Engineering
2023 fall semester
Seminar on Integrated Optical Devices C
Graduate School of Advanced Science and Engineering
2023 spring semester
Seminar on Integrated Optical Devices D
Graduate School of Advanced Science and Engineering
2023 fall semester
Seminar on Integrated Optical Devices C
Graduate School of Advanced Science and Engineering
2023 spring semester
Study Abroad in Physics and Applied Physics C
Graduate School of Advanced Science and Engineering
2023 full year
Study Abroad in Physics and Applied Physics B
Graduate School of Advanced Science and Engineering
2023 full year
Study Abroad in Physics and Applied Physics A
Graduate School of Advanced Science and Engineering
2023 full year
Research on Integrated Optical Devices
Graduate School of Advanced Science and Engineering
2023 full year
Study Abroad in Physics and Applied Physics D
Graduate School of Advanced Science and Engineering
2023 full year
Basic Experiments in Science and Engineering 2B Oubutsu
School of Advanced Science and Engineering
2023 fall semester
Graduation Thesis A (Applied Physics) [S Grade]
School of Advanced Science and Engineering
2023 fall semester
Basic Experiments in Science and Engineering 2B Butsuri
School of Advanced Science and Engineering
2023 fall semester
Graduation Thesis A (Physics) [S Grade]
School of Advanced Science and Engineering
2023 fall semester
Graduation Thesis B (Applied Physics) [S Grade]
School of Advanced Science and Engineering
2023 spring semester
Graduation Thesis B (Applied Physics)
School of Advanced Science and Engineering
2023 spring semester
Graduation Thesis B (Physics) [S Grade]
School of Advanced Science and Engineering
2023 spring semester
Faculty of Science and Engineering Graduate School of Advanced Science and Engineering
Waseda Research Institute for Science and Engineering Concurrent Researcher
Click to view the Scopus page. The data was downloaded from Scopus API in December 07, 2023, via http://api.elsevier.com and http://www.scopus.com .