Modulation transfer spectroscopy in atomic rubidium

McCarron, D.J.; King, S.A.; Cornish, S.L.

doi:10.1088/0957-0233/19/10/105601

Modulation transfer spectroscopy in atomic rubidium

McCarron, D.J.; King, S.A.; Cornish, S.L.

Authors

D.J. McCarron

S.A. King

Professor Simon Cornish s.l.cornish@durham.ac.uk
Professor

Abstract

We report modulation transfer spectroscopy on the D2 transitions in 85Rb and 87Rb using a simple home-built electro-optic modulator (EOM). We show that both the gradient and amplitude of modulation transfer spectroscopy signals, for the 87Rb F = 2 → F' = 3 and the 85Rb F = 3 → F' = 4 transitions, can be significantly enhanced by expanding the beams, improving the signals for laser frequency stabilization. The signal gradient for these transitions is increased by a factor of 3 and the peak to peak amplitude was increased by a factor of 2. The modulation transfer signal for the 85Rb F = 2 → F' transitions is also presented to highlight how this technique can generate a single, clear line for laser frequency stabilization even in cases where there are a number of closely spaced hyperfine transitions.

Citation

McCarron, D., King, S., & Cornish, S. (2008). Modulation transfer spectroscopy in atomic rubidium. Measurement Science and Technology, 19(10), Article 105601. https://doi.org/10.1088/0957-0233/19/10/105601

Journal Article Type	Article
Publication Date	Oct 1, 2008
Deposit Date	Jan 23, 2012
Publicly Available Date	Apr 11, 2013
Journal	Measurement Science and Technology
Print ISSN	0957-0233
Electronic ISSN	1361-6501
Publisher	IOP Publishing
Peer Reviewed	Peer Reviewed
Volume	19
Issue	10
Article Number	105601
DOI	https://doi.org/10.1088/0957-0233/19/10/105601
Keywords	Error signal, laser locking, electro-optic modulator (EOM), modulation transfer spectroscopy, spectroscopy