NDLI: Coherent harmonic generation experiments on UVSOR-II storage ring (2008)

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Coherent harmonic generation experiments on UVSOR-II storage ring (2008)

Content Provider	CiteSeerX
Author	Hara, T. Harima, Riken Spring- Labat, M.
Abstract	In the Coherent Harmonic Generation Free Electron Laser configuration, an external seed signal, a commer-cial laser source, is focused inside the first undulator. The interaction between the electron beam and this seed leads to a more coherent light emission. Such devices are very promising for short wavelength operation with a rather compact facility. Experiments have been performed on the UVSOR-II Storage Ring (Okazaki, Japan) with electrons stored at 600 MeV, and using a 2.5 mJ Ti:Sa laser at 800 nm wavelength, 1 kHz repetition rate, and 150 fs up to 2 ps pulse duration, allowing emission at 266 nm. This third harmonic has been characterised versus various pa-rameters. Optimizations have been realized on the elec-tron beam and laser synchronisation. The dependency of the harmonic signal on the gain (undulator gap, magnetic functions) has also been studied. Theory is compared to experiment using analytical model. These encouraging re-sults make UVSOR-II storage ring an active test facility for Coherent Harmonic Generation scheme, as well as a poten-tial VUV source for users experiments.
File Format	PDF
Journal	Nucl. Instrum. Methods A
Publisher Date	2008-01-01
Access Restriction	Open
Subject Keyword	Harmonic Signal Third Harmonic Short Wavelength Operation Various Pa-rameters Encouraging Re-sults P Pulse Duration Khz Repetition Rate Sa Laser Undulator Gap Coherent Light Emission Analytical Model External Seed Signal Active Test Facility Uvsor-ii Storage Ring Coherent Harmonic Generation Scheme Nm Wavelength Laser Synchronisation Commer-cial Laser Source Compact Facility Uvsor-ii Storage User Experiment First Undulator Mj Ti Magnetic Function Electron Beam Elec-tron Beam Coherent Harmonic Generation Experiment Poten-tial Vuv Source
Content Type	Text

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