期刊
EUROPEAN PHYSICAL JOURNAL D
卷 44, 期 1, 页码 187-200出版社
SPRINGER
DOI: 10.1140/epjd/e2007-00177-6
关键词
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Among the attractive coherent light sources resulting from the interaction between femtosecond lasers and relativistic electron beams, simultaneous Coherent Synchrotron Radiation (CSR) in the THz region, slicing and UV-VUV Coherent Harmonic Generation (CHG) can be achieved on synchrotron radiation facilities. Recently, a Ti:Sa laser at high repetition rate (1 kHz) has been seeded in the optical klystron of the Free Electron Laser at UVSOR-II (Okazaki, Japan). In this paper, the experimental set-up allowing delivery of sub picosecond UV pulses from CHG, and TeraHertz radiation from CSR is described. We further focus on the third coherent harmonic (266 nm) generated. The expected typical characteristics of this radiation, predicted by both numerical and analytical models recalled here, are experimentally verified and several studies of the influence of the seed laser on the output CHG intensity are reported. Such experiment enables UVSOR-II facility to produce in parallel short pulses at two different colors, synchronized at high repetition rate with one single infrared laser: a unique set-up of great interest for the facility users.
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