Prospects for a Narrow Line MOT in YO

Abstract

In addition to being suitable for laser cooling and trapping in a magneto-optical trap (MOT) using a relatively broad ($\sim$5 MHz) transition, the molecule YO possesses a narrow-line transition. This forbidden transition between the $X^2\Sigma$ and $A^{\prime 2}{\Delta }_{3/2}$ states has linewidth $\sim$2$\pi \times$160 kHz. After cooling in a MOT on the $X^2\Sigma$ to $A^2{\Pi }_{1/2}$ (orange) transition, the narrow (red) transition can be used to further cool the sample, requiring only minimal additions to the first stage system. The narrow line cooling stage will bring the temperature from $\sim$1 mK to $\sim$10 $\mu$K, significantly advancing the frontier on direct cooling achievable for molecules.

11 pages, 4 figures

References in corpus (6)

• A High Phase-Space-Density Gas of Polar Molecules
• Magneto-optical trapping of a diatomic molecule
• Magneto-Optical Trap for Polar Molecules
• Magneto-optical trapping forces for atoms and molecules with complex level structures
• Improved magneto-optical trapping of a diatomic molecule
• Narrow-line magneto-optical cooling and trapping of strongly magnetic atoms

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• Automated Graph-Based Detection of Quantum Control Schemes: Application to Molecular Laser Cooling