Pump-probe differencing technique for cavity-enhanced, noise-canceling saturation laser spectroscopy.
Centre for Gravitational Physics, Faculty of Science, The Australian National University, Canberra, ACT 0200, Australia. [email protected]
- Published Article
- Publication Date
May 15, 2005
We present an experimental technique that permits mechanical-noise-free, cavity-enhanced frequency measurements of an atomic transition and its hyperfine structure. We employ the 532-nm frequency-doubled output from a Nd:YAG laser and an iodine vapor cell. The cell is placed in a folded ring cavity (FRC) with counterpropagating pump and probe beams. The FRC is locked with the Pound-Drever-Hall technique. Mechanical noise is rejected by differencing the pump and probe signals. In addition, this differenced error signal provides a sensitive measure of differential nonlinearity within the FRC.
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The corresponding record at NLM can be accessed at https://www.ncbi.nlm.nih.gov/pubmed/15943315