Laboratories
Extreme Photonics Research Group
Katsumi MIDORIKAWA
Group Director
Katsumi MIDORIKAWA (D.Eng.)
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Research Areas

Opening up unexplored wavelength region of the light spectrum has been yearned as basic technology supporting promotion of scientific advance and industrial development. In Extreme Photonics Research Group, we further pursue the potential of novel optical technology being developed in RIKEN such as intense soft-x-ray attosecond pulse sources, near-field optical microscope, and live cell imaging. Using advantages of RIKEN's research complex covering physics, chemistry, engineering, biology and medical science, applications of these light sources are also pursued to explore new scientific fields. This program is also operated through close collaboration with Institute of Molecular Science and a network with several universities in Tokyo area.

Research Subject

  1. Intense soft-x-ray attosecond pulses
  2. Live cell molecular imaging
  3. Ultrafast manipulation of molecules
  4. Near-field nanophotonics
  5. Molecular reaction dynamics

Related links

  1. RIKEN Advanced Science Institute Website_Laboratories PageNew Window
  2. Individual Website Laboratory PageNew Window

RIKEN RESEARCH

August 20,2010
Lasers in a flash
Producing isolated laser pulses in just attoseconds made easier using a two-color laser field New Window
September 12,2008
Lasers pushing the limits
The dissociation of nitrogen molecules by a free-electron laser signals a departure for more extreme light-matter interactions New Window

List of Selected Publications

  1. Midorikawa, K.:
    "High-order harmonic generation and attosecond science"
    Jpn. J. Appl. Phys., 50, 09001 (2011).
  2. Togashi, T., Takahashi, E. J., Midorikawa, K., Aoyama, M., Yamakawa, K., Sato, T., Iwasaski, A., Owada, S., Okino, T., Yamanouchi, K., Kannari, F., Yagishita, A., Nakano, H., Couprie, M. E., Fukai, K., Hatsui, T., Hara, T., Kamehsima, T., Kitamura, H., Kumagai, N., Matsubara, S., Nagasono, M., Ohashi, H., Ohshima, T., Otake, Y., Shintake, T., Tamasaku, K., Tanaka, H., Tanaka, T., Togawa, K., Tomizawa, H., Takahiro, T., Ybashi, M., and Ishikawa, T.:
    "Extreme ultraviolet free electron laser seeded with high-order harmonic of Ti:sapphire laser"
    Opt. Exp., 19, 317-324 (2011).
  3. Okamoto, M., Kurokawa, K., Matsuura-Tokita, K., Saito, C., Hirata, R, and Nakano, A.:
    "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.
  4. Abe, M., Makino, A., Hullin-Matsuda, F., Kamijo, K., Ohno-Iwashita, Y., Hanada, K., Mizuno, H., Miyawaki, A., and Kobayashi, T.:
    "A role for sphingomyelin-rich lipid domains in the accumulation of PIP2 to the cleavage furrow during cytokinesis"
    Mol. Cell Biol., in press.
  5. Iwamura, M., Watanabe, H., Ishii, K., Takeuchi, S., and Tahara, T.:
    "Coherent nuclear dynamics in ultrafast photoinduced structural change of bis-diimine copper (I) complex"
    J. Am. Chem. Soc., 133, 7728-7736 (2011).
  6. Wei, Z., Nakamura, T., Takeuchi, S., and Tahara, T.:
    "Tracking of the Nuclear Wavepacket Motion in Cyanine Photoisomerization by Ultrafast Pump-Dump-Probe Spectroscopy"
    J. Am. Chem. Soc., 133, 8205-8210 (2011).
  7. Furusawa, K., Hayazawa, N., Okamoto, T., Tanaka, T., and Kawata, S.:
    "Generation of broadband longitudinal fields for applications to ultrafast tip-enhanced near-field microscopy"
    Opt. Express, 19, 25328-25336 (2011).
  8. Tarun, A., Hayazawa, N., Ishitobi, H., Kawata, S., Reiche, M., and Moutanabbir, O.:
    "Mapping the "Forbidden" Transverse-Optical Phonon in Single Strained Silicon (100) Nanowire"
    Nano Lett., 11, 4780-4788 (2011).
  9. Nishizawa, K., Kurahashi, N., Sekiguchi, K., Mizuno, T., Ogi, Y., Horio, T., Oura, M., Kosugi, N., and Suzuki, T.:
    "High-resolution soft X-Ray photoelectron spectroscopy of liquid water"
    Phys. Chem. Chem. Phys., 13 (2), 413-417 (2011).
  10. Suzuki, Y., Shen, H., Tang, Y., Kurahashi, N., Sekiguchi, K., Mizuno, T., and Suzuki, T.:
    "Isotope effect on ultrafast charge-transfer-to-solvent reaction from I- to water in aqueous NaI solution"
    Chem. Sci., 2 (6), 1094-1102 (2011).

Members

Principal Investigator

Katsumi MIDORIKAWA
Group Director