Extreme Photonics Research Group
Group Director
Katsumi Midorikawa

- Brief resume
- 1983
- Ph.D., Electrical Engineering, Keio University
- 1983
- Research Scientist, Laser Science Research Group, RIKEN
- 1997
- Chief Scientist, Laser Technology Laboratory, RIKEN (-current)
- 2005
- Head, Extreme Phonics Research Group, RIKEN
- 2005
- Director, Terahertz Research Program, RIKEN
- 2008
- Director, Extreme Photonics Department, RIKEN (-current)
- 2008
- Group Head, Extreme Photonics Research Group, RIKEN (-current)
Outline
Opening up an unexplored wavelength region of the light spectrum has long been yearned for as a basic technology supporting the promotion of scientific advances and industrial development. In our group we further pursue the potential of the novel optical technology being developed at RIKEN, such as intense soft X-ray attosecond pulse sources, near-field optical microscopes and live cell imaging. Using the advantages of RIKEN's research complex covering physics, chemistry, engineering, biology and medical science, applications of these light sources are also being pursued to explore new scientific fields. This program is also operated through close collaboration with the Institute of Molecular Science and a network of several universities in the Tokyo area.
Selected Publications
- K. Midorikawa, High-order harmonic generation and attosecond science, Jpn. J. Appl. Phys. 2011, 50, 09001.
- T. Togashi, et al. Extreme ultraviolet free electron laser seeded with high-order harmonic of Ti:sapphire laser, Opt. Exp. 2011, 19, 317.
- M. Okamoto, et al. High-curvature domains of the endoplasmic reticulum (ER) are important for the organization of ER exit sites in Saccharomyces cerevisiae, J. Cell Sci. in press.
- M. Abe, et al. A role for sphingomyelin-rich lipid domains in the accumulation of PIP2 to the cleavage furrow during cytokinesis, Mol. Cell Biol. in press.
- M. Iwamura, H. Watanabe, K. Ishii, S. Takeuchi, T. Tahara, Coherent nuclear dynamics in ultrafast photoinduced structural change of bis-diimine copper (I) complex, J. Am. Chem. Soc. 2011, 133, 7728.
- Z. Wei, T. Nakamura, S. Takeuchi, T. Tahara, Tracking of the Nuclear Wavepacket Motion in Cyanine Photoisomerization by Ultrafast Pump-Dump-Probe Spectroscopy, J. Am. Chem. Soc. 2011, 133, 8205.
- K. Furusawa, et al. Generation of broadband longitudinal fields for applications to ultrafast tip-enhanced near-field microscopy, Opt. Exp. 2011, 19, 25328.
- A. Tarun, et al. Mapping the “Forbidden” Transverse-Optical Phonon in Single Strained Silicon (100) Nanowire, Nano Lett. 2011, 11, 4780.
- K. Nishizawa, et al. High-resolution soft X-Ray photoelectron spectroscopy of liquid water, Phys. Chem. Chem. Phys. 2011, 13, 413.
- Y. Suzuki, et al. Isotope effect on ultrafast charge-transfer-to-solvent reaction from I- to water in aqueous NaI solution, Chem. Sci. 2011, 2, 1094.
Research Teams
- Team Leader
- Katsumi Midorikawa
Using high-harmonic generation by intense femtosecond laser technology, we are pursuing extreme optical science including XUV nonlinear optics and attosecond physics/chemistry.
- Team Leader
- Akihiko Nakano
We will exploit cutting-edge microscopic technologies with visible light, and observe, measure and manipulate proteins and membranes within living cells to understand mechanisms of live phenomena.
- Team Leader
- Tahei Tahara
We develop advanced spectroscopic methods based on “extreme” optical technology, and carry out fundamental studies for elucidation and control of material functions, including chemical reactions.
- Team Leader
- Satoshi Kawata
Our team is developing near-field optical scanning microscopy, which overcomes the diffraction limit of light (~250 nm in visible light) determined by the wavelength of the light.
- Team Leader
- Toshinori Suzuki
For understanding the origin of transformation of nuclear geometry and elucidating intricate and useful solvent effects on a chemical reaction, real-time observation of ultrafast changes of the electronic state in reacting molecules is essential.
Core Members
| Principal Investigator |
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| Katsumi Midorikawa |
Group Director |
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| Staff Scientist |
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| Postdoctoral Fellow |
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| Student Trainee |
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| Technical Assistant |
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| Administrative Assistant |
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| Visiting Research Staff |
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Please see Research team page for other members.