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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2503.13838 |
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| _version_ | 1866912786239455232 |
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| author | Mehling, Kameron Burau, Justin J. Hillberry, Logan E. Chen, Mengjie Aggarwal, Parul Cheng, Lan Ye, Jun Scheidegger, Simon |
| author_facet | Mehling, Kameron Burau, Justin J. Hillberry, Logan E. Chen, Mengjie Aggarwal, Parul Cheng, Lan Ye, Jun Scheidegger, Simon |
| contents | The electronic energy level structure of yttrium monoxide (YO) provides a long-lived, low-lying $^{2}Δ$ state ideal for high-precision molecular spectroscopy, narrowline laser cooling at the single photon-recoil limit, and studying dipolar physics with unprecedented interaction strength. High-resolution laser spectroscopy of ultracold laser-cooled YO molecules is used to study the Stark effect in the A$^{\prime}\,^{2}Δ_{3/2}\,J=3/2$ state. An immediate onset of the linear Stark effect is observed in the presence of weak applied electric fields due to the near degenerate $Λ$-doublet and the large electric dipole moment. By applying a small electric field the Stark insensitive state is spectroscopically isolated and the absolute transition frequency to the X$\,^2Σ^+$ electronic ground state is determined with a fractional frequency uncertainty of 9 $\times$ 10$^{-12}$. This electric field control is necessary to implement a quasi-closed photon cycling scheme that preserves parity. With this scheme the first narrowline laser cooling of a molecules is demonstrated, reducing the temperature of sub-Doppler cooled YO in two dimensions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_13838 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Narrowline Laser Cooling and Spectroscopy of Molecules via Stark States Mehling, Kameron Burau, Justin J. Hillberry, Logan E. Chen, Mengjie Aggarwal, Parul Cheng, Lan Ye, Jun Scheidegger, Simon Atomic Physics The electronic energy level structure of yttrium monoxide (YO) provides a long-lived, low-lying $^{2}Δ$ state ideal for high-precision molecular spectroscopy, narrowline laser cooling at the single photon-recoil limit, and studying dipolar physics with unprecedented interaction strength. High-resolution laser spectroscopy of ultracold laser-cooled YO molecules is used to study the Stark effect in the A$^{\prime}\,^{2}Δ_{3/2}\,J=3/2$ state. An immediate onset of the linear Stark effect is observed in the presence of weak applied electric fields due to the near degenerate $Λ$-doublet and the large electric dipole moment. By applying a small electric field the Stark insensitive state is spectroscopically isolated and the absolute transition frequency to the X$\,^2Σ^+$ electronic ground state is determined with a fractional frequency uncertainty of 9 $\times$ 10$^{-12}$. This electric field control is necessary to implement a quasi-closed photon cycling scheme that preserves parity. With this scheme the first narrowline laser cooling of a molecules is demonstrated, reducing the temperature of sub-Doppler cooled YO in two dimensions. |
| title | Narrowline Laser Cooling and Spectroscopy of Molecules via Stark States |
| topic | Atomic Physics |
| url | https://arxiv.org/abs/2503.13838 |