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Sub-Doppler modulation spectroscopy of potassium for laser stabilization

Mudarikwa, L. and Pahwa, K. and Goldwin, J. (2012) Sub-Doppler modulation spectroscopy of potassium for laser stabilization. Journal of Physics B: Atomic, Molecular and Optical Physics, 45 (6). 065002. ISSN 0953-4075

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URL of Published Version: http://dx.doi.org/10.1088/0953-4075/45/6/065002

Identification Number/DOI: doi:10.1088/0953-4075/45/6/065002

We study modulation spectroscopy of the potassium D2 transitions at 766.7 nm. The vapour pressure, controlled by heating a commercial reference cell, is first optimized using conventional saturated absorption spectroscopy. Heterodyne detection then yields sub-Doppler frequency discriminants suitable for stabilizing lasers in experiments with cold atoms. Comparisons are made between spectra obtained by direct modulation of the probe beam and those using modulation transfer from the pump via nonlinear mixing. Finally, suggestions are made for further optimization of the signals.

Type of Work:Article
Date:06 March 2012 (Publication)
School/Faculty:Colleges (2008 onwards) > College of Engineering & Physical Sciences
Department:School of Physics and Astronomy
Subjects:QC Physics
Institution:University of Birmingham
Copyright Holders:Institute of Physics
ID Code:1492
Refereed:YES
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