Veshapidze, Giorgi და Bang, Jung და Fehrenbach, Charles და Nguyen, Hai და DePaola, Brett (2015) Model-free measurement of the excited-state fraction in a 85Rb magneto-optical trap. Physical Review A. (პროცესშია)
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In many experiments involving magneto-optical traps (MOTs), it is imperative to know the fraction of atoms left in an excited state by the cooling and trapping lasers. In most cases, researchers have used formulas that were derived for simple 2-level systems interacting with a single beam of light having a well-defined polarization, and in the absence of magnetic or electric fields. However a MOT environment is much more complex than this. Here we directly measure the excited fraction in a MOT of 85Rb atoms in a model-independent manner for a wide range of trapping conditions. We then fit our measured fractions to an ansatz based on a simple model. Knowing only the trapping laser's total intensity and detuning from resonance, one can then use this ansatz to accurately predict the excited fraction. The work is a companion piece to similar measurements on a MOT of 87Rb.
| ობიექტის ტიპი: | სტატია |
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| თემატიკა: | Q Science > QC Physics |
| ქვეგანყოფილება: | Faculties/Schools > School of Natural Sciences and Engineering |
| განმათავსებელი მომხმარებელი: | Dr. გიორგი ვეშაპიძე |
| განთავსების თარიღი: | 14 მაისი 2015 07:40 |
| ბოლო ცვლილება: | 14 მაისი 2015 07:40 |
| URI: | http://eprints.iliauni.edu.ge/id/eprint/2442 |
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