First ultraviolet high-gain harmonic-generation free-electron laser |
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| Authors: | Yu L H DiMauro L Doyuran A Graves W S Johnson E D Heese R Krinsky S Loos H Murphy J B Rakowsky G Rose J Shaftan T Sheehy B Skaritka J Wang X J Wu Z |
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| Institution: | National Synchrotron Light Source, Brookhaven National Laboratory, Upton, New York 11973, USA. lhyu@bnl.gov |
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| Abstract: | We report the first experimental results on a high-gain harmonic-generation (HGHG) free-electron laser (FEL) operating in the ultraviolet. An 800 nm seed from a Ti:sapphire laser has been used to produce saturated amplified radiation at the 266 nm third harmonic. The results confirm the predictions for HGHG FEL operation: stable central wavelength, narrow bandwidth, and small pulse-energy fluctuation. |
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