Chirped magneto-optical trap of molybdenum
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arXiv
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| Format: | Preprint |
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2025
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| author | Paladugu, Sai Naga Manoj Pilgram, Nickolas Eckel, Stephen Norrgard, Eric |
| author_facet | Paladugu, Sai Naga Manoj Pilgram, Nickolas Eckel, Stephen Norrgard, Eric |
| contents | We have directly loaded a cryogenic beam of molybdenum atoms into a magneto-optical trap. By chirping the detuning of the trapping lasers, we were able to enhance the number of atoms loaded into the trap by more than a factor of two. We optimize the trapped samples for atom number, temperature, and lifetime by varying the laser-cooling parameters. The laser-cooled molybdenum atoms are subsequently transferred to a magnetic trap where we achieve vacuum-limited lifetimes of 100\,ms. Comparison of magneto-optical trap and magnetic trap lifetimes allow us to extract partial decay rates of the $\text{z}\,^7\text{P}^\text{o}_4\rightarrow\text{a}\,^5\text{D}_4$ and $\text{z}\,^7\text{P}^\text{o}_4\rightarrow\text{a}\,^5\text{D}_3$ transitions. We also provide measurements of the isotope shifts for the $\text{a}\,^7\text{S}_3\rightarrow \text{z}\,^7\text{P}^\text{o}_4$ transition with up to four times better precision than previously reported. Finally, we discuss the prospect of applying the chriped magneto-optical trap to produce laser-cooled samples of MgF. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_12291 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Chirped magneto-optical trap of molybdenum Paladugu, Sai Naga Manoj Pilgram, Nickolas Eckel, Stephen Norrgard, Eric Atomic Physics We have directly loaded a cryogenic beam of molybdenum atoms into a magneto-optical trap. By chirping the detuning of the trapping lasers, we were able to enhance the number of atoms loaded into the trap by more than a factor of two. We optimize the trapped samples for atom number, temperature, and lifetime by varying the laser-cooling parameters. The laser-cooled molybdenum atoms are subsequently transferred to a magnetic trap where we achieve vacuum-limited lifetimes of 100\,ms. Comparison of magneto-optical trap and magnetic trap lifetimes allow us to extract partial decay rates of the $\text{z}\,^7\text{P}^\text{o}_4\rightarrow\text{a}\,^5\text{D}_4$ and $\text{z}\,^7\text{P}^\text{o}_4\rightarrow\text{a}\,^5\text{D}_3$ transitions. We also provide measurements of the isotope shifts for the $\text{a}\,^7\text{S}_3\rightarrow \text{z}\,^7\text{P}^\text{o}_4$ transition with up to four times better precision than previously reported. Finally, we discuss the prospect of applying the chriped magneto-optical trap to produce laser-cooled samples of MgF. |
| title | Chirped magneto-optical trap of molybdenum |
| topic | Atomic Physics |
| url | https://arxiv.org/abs/2507.12291 |