Vos, Max Emiel (2024) Laser Cooling of Barium Monofluoride: Detailed Simulation Studies and Reintroduction of Vibrationally Excited Molecules. Master's Thesis / Essay, Physics.
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Abstract
The cryogenic beam of barium monofluoride molecules in the NL-eEDM experiment is cooled in the transverse direction to increase the statistics of the electron electric dipole moment measurement. First, we simulate laser cooling, using an open-source Python package called PyLCP, to study the effects of detuning, light intensity, and magnetic field on the velocity-force dependence of laser cooling. We find the optimal laser cooling configuration for two velocity regions that are important to the laser cooling experiment. Secondly, we reintroduce molecules that are lost from the main laser cooling transition to vibrationally excited states. The molecules are reintroduced by a laser, with sidebands generated by an electro-optical modulator (EOM). The EOM’s modulation depth and driving frequency are optimized so the light beam frequencies overlap with the four hyperfine levels in the first vibrationally excited state.
| Item Type: | Thesis (Master's Thesis / Essay) |
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| Supervisor name: | Hoekstra, S. |
| Degree programme: | Physics |
| Thesis type: | Master's Thesis / Essay |
| Language: | English |
| Date Deposited: | 12 Jul 2024 08:14 |
| Last Modified: | 12 Jul 2024 08:14 |
| URI: | https://fse.studenttheses.ub.rug.nl/id/eprint/33250 |
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