E
Eiji J. Takahashi
Researcher at Kanazawa Medical University
Publications - 259
Citations - 4260
Eiji J. Takahashi is an academic researcher from Kanazawa Medical University. The author has contributed to research in topics: Laser & High harmonic generation. The author has an hindex of 30, co-authored 237 publications receiving 3855 citations. Previous affiliations of Eiji J. Takahashi include National Institutes of Natural Sciences, Japan & Iwate Medical University.
Papers
More filters
Journal ArticleDOI
Generation of 10- microJ coherent extreme-ultraviolet light by use of high-order harmonics.
TL;DR: The generation of 10-microJ coherent extreme-ultraviolet (XUV) light at wavelengths from 73.6 to 42.6 nm, using high-order harmonics is demonstrated, which is the highest value achieved with high- order harmonics.
Journal ArticleDOI
Low-divergence coherent soft x-ray source at 13 nm by high-order harmonics
TL;DR: In this paper, a few tens of nanojoules of coherent soft x-ray pulses at a wavelength around 13 nm with high-order harmonics were generated for the characterization and inspection of an optical system for extreme-ultraviolet lithography.
Journal ArticleDOI
Visualizing Recurrently Migrating Hydrogen in Acetylene Dication by Intense Ultrashort Laser Pulses
Akiyoshi Hishikawa,Akiyoshi Hishikawa,Akiyoshi Hishikawa,Akitaka Matsuda,Mizuho Fushitani,Mizuho Fushitani,Eiji J. Takahashi,Eiji J. Takahashi +7 more
TL;DR: It is shown that the migration proceeds in a recurrent manner: the deuterium atom first shifts from one carbon site to the other in a short time scale and then migrates back to the original carbon site by 280 fs, in competition with the molecular dissociation.
Journal ArticleDOI
Extreme ultraviolet free electron laser seeded with high-order harmonic of Ti:sapphire laser
Tadashi Togashi,Eiji J. Takahashi,Katsumi Midorikawa,Makoto Aoyama,Koichi Yamakawa,Takahiro Sato,Atsushi Iwasaki,Shigeki Owada,Tomoya Okino,Kaoru Yamanouchi,Fumihiko Kannari,Akira Yagishita,Hidetoshi Nakano,M.E. Couprie,Kenji Fukami,Takaki Hatsui,Toru Hara,Takashi Kameshima,Hideo Kitamura,Noritaka Kumagai,Shinichi Matsubara,Mitsuru Nagasono,Haruhiko Ohashi,Takashi Ohshima,Yuji Otake,Tsumoru Shintake,Kenji Tamasaku,Hitoshi Tanaka,Takashi Tanaka,Kazuaki Togawa,Hiromitsu Tomizawa,Takahiro Watanabe,Makina Yabashi,Tetsuya Ishikawa +33 more
TL;DR: The random and uncontrollable spikes, which appeared in the spectra of the Self-Amplified Spontaneous Emission (SASE) based FEL radiation without the seeding source, were found to be suppressed drastically to form to a narrow-band, single peak profile at 61.2 nm.
Journal ArticleDOI
Multiphoton ionization of He by using intense high-order harmonics in the soft-x-ray region
TL;DR: In this article, the cross sections of the two-photon double ionization and above-threshold ionization in the soft-x-ray region were estimated based on the measured time-of-flight spectra for both ions and electrons obtained using intense soft x-ray pulses produced by high-order harmonics.