Third-harmonic lasing at JAERI-FEL

R. Hajima, R. Nagai, Nobuyuki Nishimori, N. Kikuzawa, E. J. Minehara

    Research output: Contribution to journalConference articlepeer-review

    13 Citations (Scopus)


    We have demonstrated FEL lasing at the third harmonic in JAERI-FEL driven by a superconducting linac. The lasing was achieved with a super enhanced gold-coated mirror tuned to 7 μm, which is a gold-coated copper mirror with Zn-Se multi-layer deposited on the surface. Lasing at the third harmonic is in the single-supermode regime with an average power of 15 W. The small-signal gain is estimated from the cavity-length detuning curve found to be 7.5%.

    Original languageEnglish
    Pages (from-to)43-46
    Number of pages4
    JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
    Issue number1-3
    Publication statusPublished - 2001 Nov 21
    Event22nd International Free Electron Laser Conference (FEL 2000) - Durham, NC, United States
    Duration: 2000 Aug 132000 Aug 18


    • Free-electron laser
    • Harmonic lasing
    • Superconducting linac

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics
    • Instrumentation


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