Blackbody thermalization and vibrational lifetimes of trapped polyatomic molecules

Abstract

We study the internal state dynamics of optically trapped polyatomic molecules subject to room temperature blackbody radiation. Using rate equations that account for radiative decay and blackbody excitation between rovibrational levels of the electronic ground state, we model the microscopic behavior of the molecules' thermalization with their environment. As an application of the model, we describe in detail the procedure used to determine the blackbody and radiative lifetimes of low-lying vibrational states in ultracold CaOH molecules, the values of which were reported in previous work [Hallas et al., arXiv:2208.13762]. Ab initio calculations are performed and are found to agree with the measured values. Vibrational state lifetimes for several other laser-coolable molecules, including SrOH and YbOH, are also calculated.

arXiv admin note: substantial text overlap with arXiv:2208.13762

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Cited by in corpus (6)

• Prospects for measuring the electron's electric dipole moment with polyatomic molecules in an optical lattice
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• Production and spectroscopy of cold radioactive molecules
• Coherent anharmonicity transfer from matter to light in the THz regime
• Atomic and molecular systems for radiation thermometry
• Parity-Doublet Coherence Times in Optically Trapped Polyatomic Molecules