Efficient Two-dimensional Subrecoil Raman Cooling of Atoms in a Tripod Configuration

Abstract

We present an efficient method for subrecoil cooling of neutral atoms by applying Raman cooling in 2D to a four-level tripod-system. The atoms can be cooled simultaneously in two directions using only three laser beams. We describe the cooling process with a simple model showing that the momentum distribution can be rapidly narrowed to velocity spread down to $0.1v_{\text{rec}}$, corresponding to effective temperature equal to $0.01T_{\text{rec}}$. This method opens new possibilities for cooling of neutral atoms.

6 pages, 3 figures

References in corpus (1)

• ${}^{87}$Sr lattice clock with inaccuracy below 10${}^{-15}$

Cited by in corpus (1)

• Robust two-dimensional subrecoil Raman cooling by adiabatic transfer in a tripod atomic system