A Metastable Beam of Titanium Atoms for Laser Cooling
Abstract
The goal of this project was to identify a pathway for applying laser cooling to titanium atoms as a means of producing an ultracold atomic gas of titanium. We identified a pattern that allows for laser cooling on a nearly closed (cycling) dipole-allowed optical transition connecting a lower-energy state with angular momentum "J" to a high-energy level state with angular momentum "J" plus 1. The isotope shifts on these transitions allow us to determine the isotope-dependent variation in the fine-structure splitting of the a5F and y5G levels themselves. Combined with existing knowledge of the nuclear charge radii of titanium nuclei, we derive the specific mass and field shifts, which arise from correlated electronic motion and electronic density at the nucleus respectively, and further observe a strong J-dependent variation in each. Our results yield insight into the electronic and nuclear structure of transition metal atoms like titanium and also characterize optical transitions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 05, 2023
- Accession Number
- AD1210737
Entities
People
- Dan Stamper-Kurn
Organizations
- University of California
- University of California, Berkeley