Hasegawa, Taro

J-GLOBAL         Last updated: Jul 16, 2019 at 02:40
 
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Name
Hasegawa, Taro
E-mail
hasegawaphys.keio.ac.jp
URL
http://www.phys.keio.ac.jp/faculty/hasegawa/hasegawa.html
Affiliation
Keio University
Section
Faculty of Science and Technology Department of Physics
Job title
Assistant Professor/Senior Assistant Professor
Degree
Master of Science(Keio University), PhD(The University of Tokyo)
Research funding number
80289305

Research Areas

 
 

Academic & Professional Experience

 
Apr 1996
 - 
Sep 2000
Research Associate, Dept. Electronics and Computer Science, Science Univ. of Tokyo in Yamaguchi
 
Sep 2000
 - 
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
 - 
Mar 2004
Guest Researcher, Time and Frequency division, National Institute of Standards and Technology (NIST), United States of America
 
Apr 2005
 - 
Today
Assistant Professor, Dept. Physics, Fac. Sci.&Tech., Keio Univ.
 
Jul 2010
 - 
Sep 2010
Guest Researcher (Max-Planck-Institut fuer Quantenoptik)
 

Education

 
 
 - 
Mar 1996
Dept. of Physics, Graduate School, Division of Science and Engineering, Keio University
 

Committee Memberships

 
Apr 2012
 - 
Mar 2014
Physical Society of Japan  Editor
 
Nov 2007
 - 
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