Extreme ultraviolet free electron laser seeded by high-order harmonic

被引：3

作者：

Togashi, T. ^{[1
]}

Takahashi, E. J. ^{[2
]}

Midorikawa, K. ^{[2
]}

Aoyama, M. ^{[3
]}

Yamakawa, K. ^{[3
]}

Sato, T. ^{[4
]}

Iwasaki, A. ^{[5
]}

Owada, S. ^{[5
]}

Yamanouchi, K. ^{[5
]}

Hara, T. ^{[1
,4
]}

Matsubara, S. ^{[1
]}

Ohshima, T. ^{[4
]}

Otake, Y. ^{[1
,4
]}

Tamasaku, K. ^{[4
]}

Tanaka, H. ^{[1
,4
]}

Tanaka, T. ^{[4
]}

Tomizawa, H. ^{[1
,4
]}

Watanabe, T. ^{[1
]}

Yabashi, M. ^{[1
,4
]}

Ishikawa, T. ^{[4
]}

机构：

[1] Japan Synchrotron Radiat Res Inst, Sayo, Hyogo 6795198, Japan

[2] RIKEN, Adv Sci Inst, Wako, Saitama 3510198, Japan

[3] Japan Atom Energy Agcy, Kyoto 6190215, Japan

[4] RIKEN, SPring Ctr 8, Sayo, Hyogo 6795148, Japan

[5] Univ Tokyo, Bunkyo Ku, Tokyo 1130033, Japan

来源：

RADIATION PHYSICS AND CHEMISTRY | 2013年 / 93卷

关键词：

Free electron laser; High-order harmonics; Extreme ultraviolet; X-RAY; WATER WINDOW; COHERENT; GENERATION; INTENSE; REGION; PULSES; LIGHT; SOFT; IONIZATION;

D O I：

10.1016/j.radphyschem.2013.06.013

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The 13th harmonic of a Ti:sapphire (TiS) laser in the extreme ultraviolet region, which was efficiently generated with a loose focusing geometry, was injected as a seeding source to a 250-MeV free-electronlaser (FEL) amplifier. When the amplification conditions were fulfilled, strong enhancement of the radiation intensity by a factor of 650 was observed. 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. The properties of the seeded FEL radiation were well reproduced by numerical simulations. We discuss the future precept of the seeded FEL scheme to the shorter wavelength region. (c) 2013 Elsevier Ltd. All rights reserved.

引用

页码：25 / 32

页数：8

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