Abstract
Polarization spectroscopy of an Fe-Ar hollow cathode discharge cell was used to lock a frequency-doubled Ti:sapphire laser to the 372-nm5 D 4→5 F 5 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.
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33.55.Ad; 42.62.Fi; 52.25.Ya
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Smeets , B., Bosch , R., van der Straten , P. et al. Laser frequency stabilization using an Fe-Ar hollow cathode discharge cell. Appl. Phys. B 76, 815–819 (2003). https://doi.org/10.1007/s00340-003-1228-1
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DOI: https://doi.org/10.1007/s00340-003-1228-1