A compact free-electron laser for generating coherent radiation in the extreme ultraviolet region

被引：356

作者：

Shintake, Tsumoru ^{[1
]}

Tanaka, Hitoshi ^{[1
]}

Hara, Toru ^{[1
,2
]}

Tanaka, Takashi ^{[1
,2
]}

Togawa, Kazuaki ^{[1
]}

Yabashi, Makina ^{[1
]}

Otake, Yuji ^{[1
]}

Asano, Yoshihiro ^{[1
,2
]}

Bizen, Teruhiko ^{[2
]}

Fukui, Toru ^{[1
]}

Goto, Shunji ^{[2
]}

Higashiya, Atsushi ^{[1
]}

Hirono, Toko ^{[2
]}

Hosoda, Naoyasu ^{[1
]}

Inagaki, Takahiro ^{[1
]}

Inoue, Shinobu ^{[1
]}

Ishii, Miho

Kim, Yujong ^{[1
]}

Kimura, Hiroaki ^{[1
,2
]}

Kitamura, Masanobu

Kobayashi, Toshiaki ^{[2
]}

Maesaka, Hirokazu ^{[1
]}

Masuda, Takemasa ^{[2
]}

Matsui, Sakuo ^{[1
]}

Matsushita, Tomohiro ^{[2
]}

Marechal, Xavier ^{[2
]}

Nagasono, Mitsuru ^{[1
]}

Ohashi, Haruhiko ^{[2
]}

Ohata, Toru ^{[2
]}

Ohshima, Takashi ^{[1
]}

Onoe, Kazuyuki ^{[1
]}

Shirasawa, Katsutoshi ^{[1
]}

Takagi, Tetsuya ^{[2
]}

Takahashi, Sunao ^{[2
]}

Takeuchi, Masao ^{[2
]}

Tamasaku, Kenji ^{[1
]}

Tanaka, Ryotaro ^{[1
,2
]}

Tanaka, Yoshihito ^{[1
]}

Tanikawa, Takanori ^{[1
]}

Togashi, Tadashi ^{[1
]}

Wu, Shukui ^{[1
]}

Yamashita, Akihiro ^{[2
]}

Yanagida, Kenichi ^{[2
]}

Zhang, Chao ^{[2
]}

Kitamura, Hideo ^{[1
,2
]}

Ishikawa, Tetsuya ^{[1
]}

机构：

[1] RIKEN, XFEL Project Head Off, Sayo, Hyogo 6795148, Japan

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

来源：

NATURE PHOTONICS | 2008年 / 2卷 / 09期

关键词：

D O I：

10.1038/nphoton.2008.134

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Single-pass free-electron lasers based on self-amplified spontaneous emission are enabling the generation of laser light at ever shorter wavelengths, including extreme ultraviolet, soft X-rays and even hard X-rays. A typical X-ray free-electron laser is a few kilometres in length and requires an electron-beam energy higher than 10 GeV (refs 6, 8). If such light sources are to become accessible to more researchers, a significant reduction in scale is desirable Here, we report observations of brilliant extreme-ultraviolet radiation from a 55-m-long compact self-amplified spontaneous-emission source, which combines short-period undulators with a high-quality electron source operating at a low acceleration energy of 250 MeV. The radiation power reaches saturation at wavelengths ranging from 51 to 61 nm with a maximum pulse energy of 30 νJ. The ultralow emittance (0.6π mm mrad) of the electron beam from a CeB 6 thermionic cathode is barely degraded by a multiple-stage bunch compression system that dramatically enhances the beam current from 1 to 300 A. This achievement expands the potential for generating X-ray free-electron laser radiation with a compact 2-GeV machine. © 2008 Macmillan Publishers Limited. All rights reserved.

引用

页码：555 / 559

页数：5

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