Sub-Doppler modulation spectroscopy of potassium for laser stabilization

L Mudarikwa; K Pahwa; Jonathan Goldwin

doi:10.1088/0953-4075/45/6/065002

Sub-Doppler modulation spectroscopy of potassium for laser stabilization

L Mudarikwa, K Pahwa, Jonathan Goldwin

Physics and Astronomy

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Abstract

We study modulation spectroscopy of the potassium D-2 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.

Original language	English
Pages (from-to)	065002
Journal	Journal of Physics B Atomic Molecular and Optical Physics
Volume	45
Issue number	6
DOIs	https://doi.org/10.1088/0953-4075/45/6/065002
Publication status	Published - 6 Mar 2012

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10.1088/0953-4075/45/6/065002

http://iopscience.iop.org/0953-4075/45/6/065002/

The Midlands Ultracold Atom Research Centre (Funded via University of Nottingham)
Gunn, M. (Principal Investigator)
Engineering & Physical Science Research Council
1/01/08 → 31/12/13
Project: Research Councils

Cite this

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abstract = "We study modulation spectroscopy of the potassium D-2 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.",

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AB - We study modulation spectroscopy of the potassium D-2 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.

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Sub-Doppler modulation spectroscopy of potassium for laser stabilization

Abstract

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The Midlands Ultracold Atom Research Centre (Funded via University of Nottingham)

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