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Zeeman-tunable modulation transfer spectroscopy

So, Chloe; Spong, Nicholas L.R.; Möhl, Charles; Jiao, Yuechun; Ilieva, Teodora; Adams, Charles S.

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Authors

Chloe So

Charles Möhl

Yuechun Jiao

Teodora Ilieva



Abstract

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. However, despite its benefits, 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, to the best of our knowledge, the observation of a magnetically tunable MTS error signal. Using a simple two-magnet arrangement, we show that the error signal for the Rb87 ????=2→????′=3 cooling transition can be Zeeman-shifted over a range of >15  GHzto any arbitrary point on the rubidium D2 spectrum. Modulation transfer signals for locking to the Rb87 ????=1→????′=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.

Citation

So, C., Spong, N. L., Möhl, C., Jiao, Y., Ilieva, T., & Adams, C. S. (2019). Zeeman-tunable modulation transfer spectroscopy. Optics Letters, 44(21), 5374-5377. https://doi.org/10.1364/ol.44.005374

Journal Article Type Article
Acceptance Date Sep 7, 2019
Online Publication Date Oct 31, 2019
Publication Date Nov 1, 2019
Deposit Date Nov 1, 2019
Publicly Available Date Mar 29, 2024
Journal Optics Letters
Print ISSN 0146-9592
Electronic ISSN 1539-4794
Publisher Optica
Peer Reviewed Peer Reviewed
Volume 44
Issue 21
Pages 5374-5377
DOI https://doi.org/10.1364/ol.44.005374

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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.





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