Spectroscopy of laser cooling transitions in MgF

Abstract

We measure the complete set of transition frequencies necessary to laser cool and trap MgF molecules. Specifically, we report the frequency of multiple low $J$ transitions of the $X^2{\Sigma }^{+}(v^{\prime \prime }=0,1)\to A^2{\Pi }_{1/2}(v^{\prime }=0)$, $X^2{\Sigma }^{+}(v^{\prime \prime }=1,2)\to A^2{\Pi }_{1/2}(v^{\prime }=1)$, and $X^2{\Sigma }^{+}(v^{\prime \prime }=1)\to B^2{\Sigma }^{+}(v^{\prime }=0)$ bands of MgF. The measured $X^2{\Sigma }^{+}(v^{\prime \prime }=1)\to B^2{\Sigma }^{+}(v^{\prime }=0)$ spectrum allowed the spin-rotation and hyperfine parameters of the $B^2{\Sigma }^{+}(v=0)$ state of MgF to be determined. Furthermore, we demonstrate optical cycling in MgF by pumping molecules into the $X^2{\Sigma }^{+}(v=1,2)$ states. Optical pumping enhances the spectroscopic signals of transitions originating in the $N^{\prime \prime }=1$ level of the $X^2{\Sigma }^{+}(v^{\prime \prime }=1,2)$ states.

arXiv comment10 pages, 5 figures

References in corpus (24)

• Magneto-optical trapping of a diatomic molecule
• The Buffer Gas Beam: An Intense, Cold, and Slow Source for Atoms and Molecules
• Molecules cooled below the Doppler limit
• Magneto-Optical Trap for Polar Molecules
• Magneto-Optical Trapping and Sub-Doppler Cooling of a Polyatomic Molecule
• Sub-millikelvin dipolar molecules in a radio-frequency magneto-optical trap
• On-Demand Entanglement of Molecules in a Reconfigurable Optical Tweezer Array
• High accuracy theoretical investigations of CaF, SrF, and BaF and implications for laser-cooling
• Cold and Slow Molecular Beam
• An intense, cold, velocity-controlled molecular beam by frequency-chirped laser slowing
• On the Prospects for Laser Cooling of TlF
• Quantum Control of Trapped Polyatomic Molecules for eEDM Searches
• Determination of CaOH and CaOCH${}_3$ vibrational branching ratios for direct laser cooling and trapping
• Prospects for laser cooling of polyatomic molecules with increasing complexity
• Quantum Blackbody Thermometry
• Buffer gas loaded magneto-optical traps for Yb, Tm, Er and Ho
• PyLCP: A python package for computing laser cooling physics
• Towards improved loading, cooling, and trapping of molecules in magneto-optical traps
• Hyperfine resolved optical spectroscopy of the A${}^2\Pi \leftarrow$X${}^2{\Sigma }^{+}$ transition in MgF
• Emulating optical cycling centers in polyatomic molecules
• Blackbody thermalization and vibrational lifetimes of trapped polyatomic molecules
• Entanglement via rotational blockade of MgF molecules in a magic potential
• Radiative Decay Rate and Branching Fractions of MgF
• Simulations of a frequency-chirped magneto-optical trap of MgF

Cited by in corpus (2)

• Magneto-optical trapping of aluminum monofluoride
• DiPolMol-Py: A Python package for calculations for ${}^2\Sigma$ ground-state molecules