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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2407.00841 |
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| _version_ | 1866911938746777600 |
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| author | Callejo, Martin Mursa, Andrei Vicarini, Rémy Klinger, Emmanuel Tanguy, Quentin Millo, Jacques Passilly, Nicolas Boudot, Rodolphe |
| author_facet | Callejo, Martin Mursa, Andrei Vicarini, Rémy Klinger, Emmanuel Tanguy, Quentin Millo, Jacques Passilly, Nicolas Boudot, Rodolphe |
| contents | We report on the development and short-term stability characterization of an optical frequency reference based on the spectroscopy of the rubidium two-photon transition at 778 nm in a microfabricated vapor cell. When compared against a 778 nm reference signal extracted from a frequency-doubled cavity-stabilized telecom laser, the short-term stability of the microcell frequency standard is 3.5 $\times$ 10$^{-13}$ $τ^{-1/2}$ until 200~s, in good agreement with a phase noise level of $+$ 43 dBrad$^2$/Hz at 1~Hz offset frequency. The two main contributions to the short-term stability of the microcell reference are currently the photon shot noise and the intermodulation effect induced by the laser frequency noise. With still a relevant margin of progress, these results show the interest of this spectroscopic approach for the demonstration of high-stability miniaturized optical vapor cell clocks. Such clocks are poised to be highly beneficial for applications in navigation, communications, and metrology. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_00841 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Short-term stability of a microcell optical reference based on Rb atom two-photon transition at 778 nm Callejo, Martin Mursa, Andrei Vicarini, Rémy Klinger, Emmanuel Tanguy, Quentin Millo, Jacques Passilly, Nicolas Boudot, Rodolphe Atomic Physics We report on the development and short-term stability characterization of an optical frequency reference based on the spectroscopy of the rubidium two-photon transition at 778 nm in a microfabricated vapor cell. When compared against a 778 nm reference signal extracted from a frequency-doubled cavity-stabilized telecom laser, the short-term stability of the microcell frequency standard is 3.5 $\times$ 10$^{-13}$ $τ^{-1/2}$ until 200~s, in good agreement with a phase noise level of $+$ 43 dBrad$^2$/Hz at 1~Hz offset frequency. The two main contributions to the short-term stability of the microcell reference are currently the photon shot noise and the intermodulation effect induced by the laser frequency noise. With still a relevant margin of progress, these results show the interest of this spectroscopic approach for the demonstration of high-stability miniaturized optical vapor cell clocks. Such clocks are poised to be highly beneficial for applications in navigation, communications, and metrology. |
| title | Short-term stability of a microcell optical reference based on Rb atom two-photon transition at 778 nm |
| topic | Atomic Physics |
| url | https://arxiv.org/abs/2407.00841 |