Centers & Labs

RIKEN Center for Advanced Photonics

Extreme Photonics Research Group

Group Director: Katsumi Midorikawa (D.Eng.)
Katsumi  Midorikawa(D.Eng.)

Discovery of novel light sources expands science horizon and creates new scientific research fields. New light sources or optical technology enabling to observe what we could not see has long been yearned for a wide variety of research fields form environment science, biology, to atomic/molecular physics. In order to fulfill such our desire, our group further pursues 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 and to develop the industrial infrastructure. This program is also operated through collaboration with research institutes worldwide, contributing to the promotion of optical science and the education of young researchers.

Main Research Field

Interdisciplinary science and engineering

Related Research Fields

Informatics / Chemistry / Engineering / Biology


  • Attosecond Science
  • Ultrafast Lasers
  • Strong Field Physics
  • Laser Processing
  • Multiphoton Microscopy


Contact information

2-1 Hirosawa, Wako, Saitama 351-0198, Japan

Email: xp-info [at]