Stimulated Slowing of Yb Atoms on the Narrow ${}^1{S}_0{\to }^3{P}_1$ Transition

Abstract

We analyzed bichromatic and polychromatic stimulated forces for laser cooling and trapping of Yb atoms using only the narrow ${}^1{S}_0{\to }^3{P}_1$ transition. Our model is based on numerical solutions of optical Bloch equations for two-level atoms driven by multiple time-dependent fields combined with Monte-Carlo simulations, which account for realistic experimental conditions such as atomic beam divergence, geometry, and Gaussian laser modes. Using 1 W of laser power, we predict a loading rate of $\approx 10^8$ atoms/s into a 556 nm MOT with a slowing force of $\approx 60F_{rad}$. We show that a square wave modulation can produce similar stimulated forces with almost twice the velocity range and improve the MOT loading rate of Yb atoms by up to 70%.

References in corpus (9)

• QuTiP 2: A Python framework for the dynamics of open quantum systems
• Large Momentum Transfer Clock Atom Interferometry on the 689 nm Intercombination Line of Strontium
• Core-Shell Magneto-Optical Trap for Alkaline-Earth-Metal-Like Atoms
• Bichromatic Slowing of Metastable Helium
• A robust, high-flux source of laser-cooled ytterbium atoms
• Crossed-Beam slowing to enhance narrow-line Ytterbium Magneto-Optic Traps
• Suppressed spontaneous emission for coherent momentum transfer
• Large molasses-like cooling forces for molecules using polychromatic optical fields: A theoretical description
• Speeding Up Particle Slowing using Shortcuts to Adiabaticity