Active compensation of the AC Stark shift in a two-photon rubidium optical frequency reference using power modulation
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| Format: | Preprint |
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2025
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| _version_ | 1866917352122089472 |
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| author | Andeweg, Yorick Kitching, John Hummon, Matthew T. |
| author_facet | Andeweg, Yorick Kitching, John Hummon, Matthew T. |
| contents | We implement a feedback protocol to suppress the AC Stark shift in a two-photon rubidium optical frequency reference, reducing its sensitivity to optical power variations by a factor of 1000. This method alleviates the tradeoff between short-term and long-term stability imposed by the AC Stark shift, enabling us to simultaneously achieve instabilities of $3\times10^{-14}$ at 1 s and $2\times10^{-14}$ at $10^4$ s. We also quantitatively describe, and experimentally explore, a stability limit imposed on clocks using this method by frequency noise on the local oscillator. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2511_19702 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Active compensation of the AC Stark shift in a two-photon rubidium optical frequency reference using power modulation Andeweg, Yorick Kitching, John Hummon, Matthew T. Applied Physics Atomic Physics We implement a feedback protocol to suppress the AC Stark shift in a two-photon rubidium optical frequency reference, reducing its sensitivity to optical power variations by a factor of 1000. This method alleviates the tradeoff between short-term and long-term stability imposed by the AC Stark shift, enabling us to simultaneously achieve instabilities of $3\times10^{-14}$ at 1 s and $2\times10^{-14}$ at $10^4$ s. We also quantitatively describe, and experimentally explore, a stability limit imposed on clocks using this method by frequency noise on the local oscillator. |
| title | Active compensation of the AC Stark shift in a two-photon rubidium optical frequency reference using power modulation |
| topic | Applied Physics Atomic Physics |
| url | https://arxiv.org/abs/2511.19702 |