Hasegawa, Taro Last updated: Jul 16, 2019 at 02:40
Academic & Professional Experience
Apr 1996
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Sep 2000
Research Associate, Dept. Electronics and Computer Science, Science Univ. of Tokyo in Yamaguchi
Sep 2000
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Mar 2005
Research Associate, Dept. of Material Science, Faculty of Science, Himeji Institute of Technology (The institute was united and renamed as "Univ. of Hyogo" from Apr. 2004.)
Jan 2003
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Mar 2004
Guest Researcher, Time and Frequency division, National Institute of Standards and Technology (NIST), United States of America
Apr 2005
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Today
Assistant Professor, Dept. Physics, Fac. Sci.&Tech., Keio Univ.
Jul 2010
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Sep 2010
Guest Researcher (Max-Planck-Institut fuer Quantenoptik)
Education
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Mar 1996
Dept. of Physics, Graduate School, Division of Science and Engineering, Keio University
Committee Memberships
Apr 2012
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Mar 2014
Physical Society of Japan Editor
Nov 2007
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Oct 2008
Physical Society of Japan Program committee of Quantum Electronics subsection, section 1
Published Papers
Yuhei Seishu, Taro Hasegawa
Applied Physics B 125(8) 142(1)-142(8) Jul 2019 [Refereed]
Hasegawa T., Sasada H.
2018 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2018 Apr 2019
© 2018 OSA. We introduce a simple scheme for mode density multiplication of an optical frequency comb by square of an arbitrary integer with phase modulation. The mode density of an Er fibercomb is multiplied by 4 2 .
Hasegawa T.
Optics Express 26(19) 24551-24563 Sep 2018
© 2018 Optical Society of America. We introduce a simple scheme for mode-density multiplication of an optical frequency comb (OFC) by a factor of square of an arbitrary integer N using phase modulation. This scheme is employed to multiply the mode...
KANAI DAISUKE, HASEGAWA TARO
Review of Scientific Instruments 89(2) 023106 Feb 2018 [Refereed]
© 2018 Author(s). A radio-frequency (rf) ion trap with string electrodes is introduced. In this trap configuration, the rf electrodes are made of narrow metal strings, by which a negligibly small portion of light-induced fluorescence (LIF) is bloc...
Hasegawa T., Sasada H.
Optics InfoBase Conference Papers Part F113-CLEOPR 2018 2018
© OSA 2018 We introduce a simple scheme for mode density multiplication of an optical frequency comb by square of an arbitrary integer with phase modulation. The mode density of an Er fibercomb is multiplied by 4 2
Misc
強度画像にはない位相画像の表現力 (翻訳)
HASEGAWA TARO
パリティ 14-21 Feb 2018 [Invited]
Books etc
ペンギン物理学辞典
清水忠雄ほか合計21名 (Part:Joint Translation)
朝倉書店 2012 ISBN:9784254131062
光学実験の基礎と改良のヒント
UEHARA KIYOJI, HASEGAWA TARO, SASADA HIROYUKI (Part:Joint Work, 63-112)
講談社サイエンティフィク 2009 ISBN:978-4-06-157101-3
Conference Activities & Talks
Robust offset locking of laser frequency with electronically tunable LC circuits for sub-millihertz uncertainty
Taro Hasegawa, Yuhei Seishu
2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference 26 Jun 2019
可変LC回路を用いた堅牢なレーザー周波数安定化法
長谷川太郎、清酒悠平
ERATO美濃島知的光シンセサイザプロジェクト成果報告会 18 Mar 2019
可変LC回路を用いた堅牢なレーザー周波数安定化法
清酒悠平、長谷川太郎
日本物理学会第74回年次大会 17 Mar 2019 日本物理学会
Mode density multiplication of an optical frequency comb without power dissipation
Taro Hasegawa
KEIO Symposium on Microresonator Frequency Comb 4 Dec 2018
高分解能な光周波数コム直接分光
長谷川太郎、佐々田博之
日本物理学会2018年秋季大会 12 Sep 2018 日本物理学会
Research Grants & Projects
光周波数コムを用いた超高分解能高速高精度分光法の開発
公益財団法人精密測定技術う振興財団: 精密測定技術振興のための調査・研究事業
Project Year: Apr 2019 - Mar 2020 Investigator(s): 長谷川太郎
変位型サニャック干渉計を用いた超短パルスレーザーのパルス時間測定器
慶應義塾大学: 学事振興資金
Project Year: Apr 2019 - Mar 2020 Investigator(s): 長谷川太郎
インコヒーレント光源の1光子吸収によるイオントラップへのイオンローディング法
慶應義塾大学: 学事振興資金
Project Year: Apr 2018 - Mar 2019 Investigator(s): 長谷川太郎
回転rfトラップにおけるダストプラズマの挙動
慶應義塾大学: 学事振興資金
Project Year: Apr 2016 - Mar 2017 Investigator(s): 長谷川太郎
新しい広帯域かつ狭線幅な赤外分光法
日本学術振興会: Grant-in-Aid for Scientific Research
Project Year: Apr 2015 - Today Investigator(s): 長谷川太郎
phys.keio.ac.jp