title: First ultraviolet high-gain harmonic-generation free-electron laser.
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.
authors.affiliation: National Synchrotron Light Source, Brookhaven National Laboratory, Upton, New York 11973, USA. lhyu@bnl.gov
authors.forename: L H
authors.initials: LH
authors.lastname: Yu
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authors.initials: L
authors.lastname: DiMauro
authors.forename: A
authors.initials: A
authors.lastname: Doyuran
authors.forename: W S
authors.initials: WS
authors.lastname: Graves
authors.forename: E D
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authors.lastname: Johnson
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authors.lastname: Heese
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authors.lastname: Krinsky
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authors.lastname: Loos
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authors.lastname: Murphy
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authors.lastname: Rakowsky
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authors.lastname: Rose
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authors.lastname: Shaftan
authors.forename: B
authors.initials: B
authors.lastname: Sheehy
authors.forename: J
authors.initials: J
authors.lastname: Skaritka
authors.forename: X J
authors.initials: XJ
authors.lastname: Wang
authors.forename: Z
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authors.lastname: Wu