Sub-Doppler Laser Cooling of23Na in Gray Molasses on theD2Line
| Autor: | Pengjun Wang, Jing Zhang, Lianghui Huang, Ziliang Li, Zhenlian Shi, Zengming Meng |
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| Rok vydání: | 2018 |
| Předmět: |
Physics
Atomic Physics (physics.atom-ph) business.industry FOS: Physical sciences General Physics and Astronomy 01 natural sciences Physics - Atomic Physics 010305 fluids & plasmas symbols.namesake Optics Quantum Gases (cond-mat.quant-gas) Laser cooling 0103 physical sciences symbols Condensed Matter - Quantum Gases 010306 general physics business Doppler effect |
| Zdroj: | Chinese Physics Letters. 35:123701 |
| ISSN: | 1741-3540 0256-307X |
| DOI: | 10.1088/0256-307x/35/12/123701 |
| Popis: | We report on the efficient gray molasses cooling of sodium atoms using the $D_{2}$ optical transition at 589.1 nm. Thanks to the hyperfine split about 6$\Gamma$ between the $|F'=2\rangle$ and $|F'=3\rangle$ in the excited state 3$^{2}P_{3/2}$, this atomic transition is effective for the gray molasses cooling mechanism. Using this cooling technique, the atomic sample in $F = 2$ ground manifold is cooled from 700 $\upmu$K to 56 $\upmu$K in 3.5 ms. We observe that the loading efficiency into magnetic trap is increased due to the lower temperature and high phase space density of atomic cloud after gray molasses. This technique offers a promising route for the fast cooling of the sodium atoms in the $F=2$ state. Comment: 5 pages, 4 figures |
| Databáze: | OpenAIRE |
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