Free-electron lasers

Definition

Free-electron lasers create coherent light by constantly accelerating a beam of electrons. Free-electron lasers are particularly useful because they can produce radiation with a short-wavelength, down to just a few tenths of a nanometre. Thus, it is hoped they will become an important tool for atom-level material characterization.

Latest Research and Reviews

  • Research |

    The Pohang Accelerator Laboratory X-ray Free Electron Laser (PAL-XFEL) in South Korea has now entered operation with a timing jitter of just 20 fs.

    • Heung-Sik Kang
    • , Chang-Ki Min
    • , Hoon Heo
    • , Changbum Kim
    • , Haeryong Yang
    • , Gyujin Kim
    • , Inhyuk Nam
    • , Soung Youl Baek
    • , Hyo-Jin Choi
    • , Geonyeong Mun
    • , Byoung Ryul Park
    • , Young Jin Suh
    • , Dong Cheol Shin
    • , Jinyul Hu
    • , Juho Hong
    • , Seonghoon Jung
    • , Sang-Hee Kim
    • , KwangHoon Kim
    • , Donghyun Na
    • , Soung Soo Park
    • , Yong Jung Park
    • , Jang-Hui Han
    • , Young Gyu Jung
    • , Seong Hun Jeong
    • , Hong Gi Lee
    • , Sangbong Lee
    • , Sojeong Lee
    • , Woul-Woo Lee
    • , Bonggi Oh
    • , Hyung Suck Suh
    • , Yong Woon Parc
    • , Sung-Ju Park
    • , Min Ho Kim
    • , Nam-Suk Jung
    • , Young-Chan Kim
    • , Mong-Soo Lee
    • , Bong-Ho Lee
    • , Chi-Won Sung
    • , Ik-Su Mok
    • , Jung-Moo Yang
    • , Chae-Soon Lee
    • , Hocheol Shin
    • , Ji Hwa Kim
    • , Yongsam Kim
    • , Jae Hyuk Lee
    • , Sang-Youn Park
    • , Jangwoo Kim
    • , Jaeku Park
    • , Intae Eom
    • , Seungyu Rah
    • , Sunam Kim
    • , Ki Hyun Nam
    • , Jaehyun Park
    • , Jaehun Park
    • , Sangsoo Kim
    • , Soonam Kwon
    • , Sang Han Park
    • , Kyung Sook Kim
    • , Hyojung Hyun
    • , Seung Nam Kim
    • , Seonghan Kim
    • , Sun-min Hwang
    • , Myong Jin Kim
    • , Chae-yong Lim
    • , Chung-Jong Yu
    • , Bong-Soo Kim
    • , Tai-Hee Kang
    • , Kwang-Woo Kim
    • , Seung-Hwan Kim
    • , Hee-Seock Lee
    • , Heung-Soo Lee
    • , Ki-Hyeon Park
    • , Tae-Yeong Koo
    • , Dong-Eon Kim
    •  & In Soo Ko
    Nature Photonics 11, 708–713
  • Research |

    Terahertz (THz) pulses are generated by irradiating a metal wire with femtosecond laser pulses. For incident laser energy of 3 mJ, a THz pulse with energy of 28 μJ is obtained from a 10-cm-long wire. The spectrum of the THz pulse covers 0.1–1.5 THz.

    • Ye Tian
    • , Jiansheng Liu
    • , Yafeng Bai
    • , Shiyi Zhou
    • , Haiyi Sun
    • , Weiwei Liu
    • , Jiayu Zhao
    • , Ruxin Li
    •  & Zhizhan Xu
    Nature Photonics 11, 242–246
  • Research |

    A new scheme for multicolour X-ray free-electron lasers at soft X-ray wavelengths is proposed. The scheme significantly improves two-colour pulse generation and makes possible the first demonstration of three-colour pulse generation.

    • Alberto A. Lutman
    • , Timothy J. Maxwell
    • , James P. MacArthur
    • , Marc W. Guetg
    • , Nora Berrah
    • , Ryan N. Coffee
    • , Yuantao Ding
    • , Zhirong Huang
    • , Agostino Marinelli
    • , Stefan Moeller
    •  & Johann C. U. Zemella
    Nature Photonics 10, 745–750
  • Research |

    A terahertz (THz) optical single-sideband modulator (OSSB) for direct conversion of free-space THz electromagnetic radiation to THz optical modulations is realized. The THz OSSB operates in the 0.3–1.0 THz range without any frequency-dependent tuning.

    • A. S. Meijer
    • , G. Berden
    • , D. D. Arslanov
    • , M. Ozerov
    • , R. T. Jongma
    •  & W. J. van der Zande
    Nature Photonics 10, 740–744

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