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Motoichi Ohtsu

Motoichi Ohtsu

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Engineering and Technology
Japan
2025

D-Index & Metrics

Engineering and Technology

D-Index
65
Citations
16115
World Ranking
1523
National Ranking
13

Research.com Recognitions

  • 2025 - Research.com Engineering and Technology in Japan Leader Award
  • 2003 - OSA Fellows For pioneering work on nanophotonics and atom photonics.

Overview

Motoichi Ohtsu is affiliated with the University of Tokyo in Japan and has a research focus spanning several interdisciplinary scientific fields. Their main areas of study include Physics and Astronomy, Engineering, and Computer Science. Specifically, their work is concentrated on subfields such as Atomic and Molecular Physics, and Optics; Artificial Intelligence; Biomedical Engineering; Materials Chemistry; and Electrical and Electronic Engineering.

The research topics they have covered most extensively include Quantum Information and Cryptography, Near-Field Optical Microscopy, Quantum Electrodynamics and Casimir Effect, Quantum Mechanics and Applications, Photonic and Optical Devices, Diamond and Carbon-based Materials Research, and Photonic Crystals and Applications.

Ohtsu's publication record includes several recent papers addressing advancements in nanophotonics and magneto-optical effects. Recent works feature:

  • SiC transmission-type polarization rotator using a large magneto-optical effect boosted and stabilized by dressed photons, 2020, Scientific Reports
  • Off-Shell Quantum Fields to Connect Dressed Photons with Cosmology, 2020, Symmetry
  • Drastic advancement in nanophotonics achieved by a new dressed photon study, 2021, Journal of the European Optical Society Rapid Publications
  • Perspective on an Emerging Frontier of Nanoscience Opened up by Dressed Photon Studies, 2023, Nanoarchitectonics
  • Wavelength- and polarization-dependent enhancement of the magneto-optical effect with Al-doped 4H-SiC, 2025, Optics Letters

In addition to journal articles, Ohtsu has contributed to book literature, notably publishing "Dressed Photons to Revolutionize Modern Physics" with Springer Nature in 2025.

Their co-authorship network includes frequent collaborators such as Hirofumi Sakuma, Izumi Ojima, Takuya Kadowaki, Tadashi Kawazoe, and Hiroyuki Ochiai.

Ohtsu has published in specialized venues including Symmetry, Scientific Reports, Journal of the European Optical Society Rapid Publications, Nanoarchitectonics, and Optics Letters.

They have received recognition such as the OSA Fellows award in 2003 for pioneering work in nanophotonics and atom photonics.

Best Publications

  • Wide-span optical frequency comb generator for accurate optical frequency difference measurement

    M. Kourogi;K. Nakagawa;M. Ohtsu

  • A Simple Method for the Production of a Two-Dimensional, Ordered Array of Small Latex Particles

    R. Micheletto;H. Fukuda;M. Ohtsu

  • Laser spectroscopy of atoms guided by evanescent waves in micron-sized hollow optical fibers.

    H. Ito;T. Nakata;K. Sakaki;M. Ohtsu

  • Nanophotonics: design, fabrication, and operation of nanometric devices using optical near fields

    M. Ohtsu;K. Kobayashi;T. Kawazoe;S. Sangu

  • Near-Field Nano/Atom Optics And Technology

    Motoichi Ohtsu

  • Brightening of excitons in carbon nanotubes on dimensionality modification

    Yuhei Miyauchi;Yuhei Miyauchi;Munechiyo Iwamura;Shinichiro Mouri;Tadashi Kawazoe

  • Nanodot coupler with a surface plasmon polariton condenser for optical far/near-field conversion

    Wataru Nomura;Motoichi Ohtsu;Takashi Yatsui

  • Tailoring a high‐transmission fiber probe for photon scanning tunneling microscope

    Toshiharu Saiki;S. Mononobe;M. Ohtsu;N. Saito

  • Reproducible Fabrication Technique of Nanometric Tip Diameter Fiber Probe for Photon Scanning Tunneling Microscope

    Togar Pangaribuan;Kazunobu Yamada;Shudong Jiang;Hisao Ohsawa

  • Near-Field Nano-Optics

    Motoichi Ohtsu;Hirokazu Hori

  • Demonstration of a nanophotonic switching operation by optical near-field energy transfer

    Tadashi Kawazoe;Kiyoshi Kobayashi;Suguru Sangu;Motoichi Ohtsu

  • INCREASING THROUGHPUT OF A NEAR-FIELD OPTICAL FIBER PROBE OVER 1000 TIMES BY THE USE OF A TRIPLE-TAPERED STRUCTURE

    T. Yatsui;M. Kourogi;M. Ohtsu

  • Ultranarrow 13 C 2 H 2 saturated-absorption lines at 1.5 μm

    M. de Labachelerie;K. Nakagawa;M. Ohtsu

  • Linewidth reduction of a semiconductor laser by electrical feedback

    M. Ohtsu;S. Kotajima

  • Plasmon waveguide for optical far/near-field conversion

    T. Yatsui;M. Kourogi;M. Ohtsu

  • A monolithic optical frequency comb generator

    M. Kourogi;T. Enami;M. Ohtsu

  • High-frequency-stability laser at 1.5 microm using Doppler-free molecular lines.

    M. de Labachelerie;K. Nakagawa;Y. Awaji;M. Ohtsu

  • Low-temperature orientation-selective growth and ultraviolet emission of single-crystal ZnO nanowires

    Tae-Won Kim;Tadashi Kawazoe;Shunsuke Yamazaki;Motoichi Ohtsu

  • Optical nanofountain: A biomimetic device that concentrates optical energy in a nanometric region

    Tadashi Kawazoe;Kiyoshi Kobayashi;Motoichi Ohtsu

  • 30-THz span optical frequency comb generation by self-phase modulation in an optical fiber

    K. Imai;M. Kourogi;M. Ohtsu

  • Progress of high-resolution photon scanning tunneling microscopy due to a nanometric fiber probe

    M. Ohtsu

  • Frequency Stabilization of AlGaAs Semiconductor Laser Based on the 85Rb-D2 Line

    Hidemi Tsuchida;Motoichi Ohtsu;Toshiharu Tako;Naimu Kuramochi

Frequent Co-Authors

Gyu-Chul Yi
Gyu-Chul Yi Seoul National University
Masahiko Hara
Masahiko Hara Tokyo Institute of Technology
Hadis Morkoç
Hadis Morkoç Virginia Commonwealth University
Masaaki Tanaka
Masaaki Tanaka University of Tokyo
Masayuki Murata
Masayuki Murata Osaka University
Kenichi Nishi
Kenichi Nishi NEC (Japan)
Koji Suzuki
Koji Suzuki Keio University
Won Il Park
Won Il Park Hanyang University
Kazunari Matsuda
Kazunari Matsuda Kyoto University
Tetsu Yonezawa
Tetsu Yonezawa Hokkaido University

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