RIKEN Center for Advanced Photonics Attosecond Science Research Team

Team Leader: Katsumi Midorikawa (D.Eng.)

Japanese Page

Research Summary

Nonlinear optical process in the XUV region is of paramount importance not only in the field of quantum electronic but also in ultrafast optics. From the viewpoint of quantum electronics, new features of the interaction between intense XUV photons and matters are expected to be revealed through observation of those nonlinear phenomena. On the other hand, those nonlinear processes in the XUV region is indispensable for progress of attosecond science including attosecond atomic/molecular physics and chemistry, because it is very useful for investigating ultrafast phenomena directly in attosecond time scale. Using high harmonic generation by intense femtosecond laser technology, we are pursuing extreme optical science including XUV nonlinear optics and attosecond physics/chemistry.

Main Research Fields

Interdisciplinary Science & Engineering

Related Research Fields

Complex Systems
Engineering

Keywords

Attosecond Science
Ultrafast Lasers
Strong Field Physics
Laser Processing
Multiphoton Microscopy

Selected Publications

1. Lin, Y-C., Midorikawa, K., and Nabekawa, Y.:
"Wavefront control of sub-cycle vortex pulses via carrier-envelope-phase tailoring,"
Light: Sci. & Appl. 12, 279 (2023).
2. Nabekawa, Y., and Midorikawa, K.:
"Analysis of attosecond entanglement and coherence using feasible formula,"
Phys. Rev. Res. 5, 033083 (2023).
3. Matsubara, T., Nabekawa, Y., Ishikawa, K. L., Yamanouchi, K., and Midorikawa, K.:
"Attosecond optical and Ramsey-type interferometry by post-generation splitting of harmonic pulses,"
Ultrafast Sci. 2022, 9858739 (2022).
4. Midorikawa, K.:
"Progress on table-top isolated attosecond light sources,"
Nat. Photo. 16, 267 (2022).
5. Xue, B., Midorikawa, K., and Takahashi, E. J.:
"Gigawatt-class, tabletop, isolated-attosecond-pulse light source,"
Optica 9, 360 (2022).
6. Matsubara, T., Fukahori, S., Lorstedt, E., Nabekawa, Y., Yamanouchi, K., and Midorikawa, K.:
"300 attosecond response of acethylene in two-photon ionization/dissociation processes,"
Optica 8, 1075-1083 (2021).
7. Kanda, N., Imahoko, T., Yoshida, K., Tanabashi, A., Eilanlou, A. A., Nabekawa, Y., Sumiyoshi, T., Kuwata-Gonokami, M., and Midorikawa, K.:
"Opening a new route to multiport coherent XUV sources via intracavity high-order harmonic generation,"
Light: Sci. & Appl. 9, 168 (2020).
8. Lin, Y-C., Nabekawa, Y., and Midorikawa, K:
"Optical parametric amplification of sub-cycle shortwave infrared pulses,"
Nat. Commun. 11, 3413 (2020).
9. Fu, Y., Nishimura, K., Shao, R., Suda, A., Midorikawa, K., Lan, P., and Takahashi, E. J.:
"High efficiency ultrafast water-window harmonic generation for single-shot soft x-ray spectroscopy,"
Commun. Phys. 3, 92 (2020).
10. Xue, B., Tamaru, Y., Fu, Y., Yuan, H., Lan, P., Mucke, O. D., Suda, A., Midorikawa, K., and Takahashi、E. J.:
"Fully stabilized multi-TW optical waveform synthesizer: Towards gigawatt isolated attosecond pulses,"
Science Advances 6, eaay2802 (2020).