Cold Rydberg Atoms Trapped in a CO2 Optical Lattice.

摘要

In this project, we have built the new experiment setup to trap atoms in a CO2 optical dipole trap. The setup consists of a main chamber for the experiment, and a pumping region with the ion and titanium sublimation pumps. In the main chamber, we have installed an electron detector and an ion detector; the later will be able to obtain images of the atoms in the dipole trap. Recently, we have loaded the optical dipole trap from a magneto-optical trap to perform the proposed experiments. We have also investigated the population transfer collisions involving nS+nS, nP+nP and nD+nD states after a delay of 100 ns following their excitation in a Rb MOT. In the literature, such process has been associated with a many body effect. However, we have proposed a recent theoretical model based on two body interaction and multipole contributions in collaboration with Prof. Shaffer from University of Oklahoma. We have also compared the results obtained in Brazil for Rubidium with the results from University of Oklahoma for Cesium. Several papers were published.