Laser frequency stabilization using an Fe-Ar hollow cathode discharge cell

B. Smeets, R.C.M. Bosch, P. Straten, van der, E. Sligte, te, R.E. Scholten, H.C.W. Beijerinck, K.A.H. Leeuwen, van

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    Abstract

    Polarization spectroscopy of an Fe-Ar hollow cathode discharge cell was used to lock a frequency-doubled Ti:sapphire laser to the 372-nm5D45F5 transition of 56Fe. The discharge cell produced a density of 1018 m-3 ground-state 56Fe atoms at a temperature of 650 K, this density being comparable to a conventional oven at 1500 K. Saturated absorption spectroscopy and two schemes of polarization spectroscopy were compared with respect to signal-to-background ratio and the effect of velocity-changing collisions. The laser was locked within 0.2 MHz for hours by feedback of the dispersive polarization spectroscopy signal.
    Original languageEnglish
    Pages (from-to)815-819
    JournalApplied Physics B: Lasers and Optics
    VolumeB76
    Issue number8
    DOIs
    Publication statusPublished - 2003

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