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Journal Articles

Stabilization of a high-order harmonic generation seeded extreme ultraviolet free electron laser by time-synchronization control with electro-optic sampling

Tomizawa, Hiromitsu*; Sato, Takahiro*; Ogawa, Kanade*; Togawa, Kazuaki*; Tanaka, Takatsugu*; Hara, Toru*; Yabashi, Makina*; Tanaka, Hitoshi*; Ishikawa, Tetsuya*; Togashi, Tadashi*; et al.

High Power Laser Science and Engineering, 3, p.e14_1 - e14_10, 2015/04

 Times Cited Count:5 Percentile:32.92(Optics)

no abstracts in English

Journal Articles

Full-coherent HHG-seeded EUV-FEL locked by EOS timing feedback

Ogawa, Kanade*; Sato, Takahiro*; Matsubara, Shinichi*; Okayasu, Yuichi*; Togashi, Tadashi*; Watanabe, Takahiro*; Takahashi, Eiji*; Midorikawa, Katsumi*; Aoyama, Makoto; Yamakawa, Koichi; et al.

Proceedings of 10th Conference on Lasers and Electro-Optics Pacific Rim and 18th OptoElectronics and Communications Conference and Photonics in Switching 2013 (CLEO-PR & OECC/PS 2013) (USB Flash Drive), 2 Pages, 2013/06

no abstracts in English

Journal Articles

High intense full-coherent radiation of free electron laser seeded by high-order harmonics in extreme-ultraviolet region

Togashi, Tadashi*; Takahashi, Eiji*; Midorikawa, Katsumi*; Aoyama, Makoto; Yamakawa, Koichi; Sato, Takahiro*; Iwasaki, Atsushi*; Owada, Shigeki*; Yamanouchi, Kaoru*; Hara, Toru*; et al.

Proceedings of Ultrafast Optics IX (CD-ROM), 2 Pages, 2013/03

We have demonstrated free-electron laser radiation seeded by high-order harmonics in the extreme-ultraviolet region. Strong enhancement of the radiation intensity by a factor of 104 was observed with timing control of an electro-optical sampling technique.

Journal Articles

The First electron bunch measurement by means of dast organic EO crystals

Okayasu, Yuichi*; Tomizawa, Hiromitsu*; Matsubara, Shinichi*; Sato, Takahiro*; Ogawa, Kanade*; Togashi, Tadashi*; Takahashi, Eiji*; Minamide, Hiroaki*; Matsukawa, Ken*; Aoyama, Makoto; et al.

Proceedings of 1st International Beam Instrumentation Conference (IBIC 2012) (Internet), 5 Pages, 2012/10

no abstracts in English

Journal Articles

Soft X-ray emission spectroscopy of polycyclic aromatic hydrocarbons

Muramatsu, Yasuji; Tomizawa, Kana; Denlinger, J. D.*; Perera, R. C. C.*

Journal of Electron Spectroscopy and Related Phenomena, 137-140(1-3), p.823 - 826, 2004/07

High-resolution CK X-ray emission spectra of polycyclic aromatic hydrocarbons (PAH) were measured using synchrotron radiation. The main peak energies in the PAH X-ray spectra shifted to a higher energy region as the ratio of hydrogenated outer carbon atoms to the non-hydrogenated inner carbon atoms increased. Discrete variational (DV)-X$$alpha$$ molecular orbital calculations provided theoretical confirmation that the spectral features depend on the ratio of hydrogenated/non-hydrogenated carbon atoms, which suggests that the features around the main peaks provide the information of the degree of hydrogenation in PAH compounds.

Oral presentation

Temporal overlapping for an HH seeded EUV-FEL operation by using EO-based timing-drift controlling system

Matsubara, Shinichi*; Togashi, Tadashi*; Takahashi, Eiji*; Midorikawa, Katsumi*; Aoyama, Makoto; Yamakawa, Koichi; Sato, Takahiro*; Iwasaki, Atsushi*; Owada, Shigeki*; Yamanouchi, Kaoru*; et al.

no journal, , 

no abstracts in English

Oral presentation

Stable operation of HHG-seeded EUV-FEL at the SCSS test accelerator

Tomizawa, Hiromitsu*; Hara, Toru*; Ishikawa, Tetsuya*; Ogawa, Kanade*; Tanaka, Hitoshi*; Tanaka, Takatsugu*; Togashi, Tadashi*; Togawa, Kazuaki*; Yabashi, Makina*; Aoyama, Makoto; et al.

no journal, , 

no abstracts in English

Oral presentation

HHG-seeded FEL with EOS-based timing control

Matsubara, Shinichi*; Aoyama, Makoto; Iwasaki, Atsushi*; Okayasu, Yuichi*; Ogawa, Kanade*; Owada, Shigeki*; Sato, Takahiro*; Takahashi, Eiji*; Tanaka, Takashi*; Togashi, Tadashi*; et al.

no journal, , 

no abstracts in English

Oral presentation

Sustained lasing of HHG-seeded FEL by using EOS-based timing control

Watanabe, Takahiro*; Aoyama, Makoto; Iwasaki, Atsushi*; Otake, Yuji*; Oshima, Takashi*; Okayasu, Yuichi*; Ogawa, Kanade*; Owada, Shigeki*; Sato, Takahiro*; Togashi, Tadashi*; et al.

no journal, , 

no abstracts in English

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