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Saturated absorption spectroscopy of calcium in a hollow-cathode lamp

Dammalapati, U. and Norris, I. and Riis, E. and , UK Engineering and Physical Sciences Research Council (EPSRC) (Funder) (2009) Saturated absorption spectroscopy of calcium in a hollow-cathode lamp. Journal of Physics B: Atomic, Molecular and Optical Physics, 42 (16). ISSN 0953-4075

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Abstract

We report on a technique for obtaining dispersive saturated absorption features by two pump beams derived from an acousto-optic modulator. One of the beams is frequency shifted by the modulator allowing for a variable frequency offset of the resulting signal. They are used to saturate the atomic transition in the low-density vapour of the lamp. The sensitivity of the technique is sufficient to observe clear signals from isotopes of calcium unresolved by the inhomogeneous broadening and with natural abundances of less than 0.2%. The technique is used for offset locking the frequency of a Ti:Sapphire laser used for laser cooling and trapping of calcium.

Item type: Article
ID code: 19031
Keywords: pump beams, acousto-optic modulator, atomic transition, Ti, Sapphire laser, Physics, Atomic and Molecular Physics, and Optics, Condensed Matter Physics
Subjects: Science > Physics
Department: Faculty of Science > Physics
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 26 May 2010 10:10
    Last modified: 05 Sep 2014 03:51
    URI: http://strathprints.strath.ac.uk/id/eprint/19031

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