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Supporting Information for Zeeman-tunable Modulation Transfer Spectroscopy [design file] Open Access

Active frequency stabilization of a laser to an atomic or molecular resonance underpins many modern-day AMO physics experiments. With a flat background and high signal-to-noise ratio, modulation transfer spectroscopy (MTS) offers an accurate and stable method for laser locking. Despite its benefits, however, the four-wave mixing process that is inherent to the MTS technique entails that the strongest modulation transfer signals are only observed for closed transitions, excluding MTS from numerous applications. Here, we report for the first time the observation of a magnetically tunable MTS error signal. Using a simple two-magnet arrangement, we show that the error signal for the 87Rb F = 2 → F' = 3 cooling transition can be Zeeman-shifted over a range of >15 GHz to any arbitrary point on the rubidium D2 spectrum. Modulation transfer signals for locking to the 87Rb F = 1 → F' = 2 repumping transition as well as 1 GHz red-detuned to the cooling transition are presented to demonstrate the versatility of this technique, which can readily be extended to the locking of Raman and lattice lasers.

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Resource type

Other

Contributors

Creator: So, Chloe ¹
Contact person: So, Chloe ¹
Spong, Nicholas L. R. ¹
Möhl, Charles ^1,2
Jiao, Yuechun ^1,3
Adams, Charles S. ¹

¹ Durham University, UK
² Universität Heidelberg, Germany
³ Shanxi University, China

Funder

Engineering and Physical Sciences Research Council

Research methods

Other description

Keyword

Optics
Atomic physics
Lasers
Laser locking
Modulation transfer spectroscopy
Zeeman-effect

Subject

Location

Language

Cited in

pending

Identifier

ark:/32150/r2r207tp335
doi:10.15128/r2r207tp335

Rights

Creative Commons Attribution 4.0 International (CC BY)

Publisher

Durham University

Date Created

File Details

Depositor

C. So

Date Uploaded

31 May 2019, 14:05:41

Date Modified

1 August 2019, 14:08:50

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File format: zip (ZIP Format)

Mime type: application/zip

File size: 45997261

Last modified: 2019:08:01 12:20:23+01:00

Filename: Zeeman-tunable Modulation Transfer Spectroscopy_Supporting Information.zip

Original checksum: 5d8a0897d38563f7d9c4cc132ccf4d85