Modulation transfer spectroscopy in atomic rubidium

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

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
• Public URL: https://durham-repository.worktribe.com/output/1529874