Laser-induced thermal source for cold atoms
| Autor: | Hsu, Chung Chuan, Larue, Rémy, Kwong, Chang Chi, Wilkowski, David |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Scientific Reports 12, 868 (2022) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1038/s41598-021-04697-4 |
| Popis: | We demonstrate a simple and compact approach to laser cool and trap atoms based on laser-induced thermal ablation (LITA) of a pure solid granule. A rapid thermalisation of the granule leads to a fast recovery of the ultra-high vacuum condition required for a long trapping lifetime of the cold gas. We give a proof-of-concept of the technique, performing a magneto-optical trap on the 461 nm $^1S_0\rightarrow^1P_1$ transition of strontium. We get up to 3.5 million of cold strontium-88 atoms with a trapping lifetime of more than 4 s. The lifetime is limited by the pressure of the strontium-free residual background vapour. We also implement an original configuration of permanent magnets to create the quadruple magnetic field of the magneto-optical trap. The LITA technique can be generalized to other atomic elements such as transition metals and lanthanide atoms, and shows a strong potential for applications in quantum technologies ranging from quantum computing to precision measurements such as outdoor inertial sensing. Comment: 9 pages, 4 figures |
| Databáze: | arXiv |
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