Polarization Enhanced Deep Optical Dipole Trapping of $\Lambda$-cooled Polar Molecules

Thomas K. Langin; Varun Jorapur; Yuqi Zhu; Qian Wang; David DeMille

doi:10.1103/PhysRevLett.127.163201

Polarization Enhanced Deep Optical Dipole Trapping of $\Lambda$-cooled Polar Molecules

Atomic Physics 2021-10-27 v2

Authors: Thomas K. Langin , Varun Jorapur , Yuqi Zhu , Qian Wang , David DeMille

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

We demonstrate loading of SrF molecules into an optical dipole trap (ODT) via in-trap $\Lambda$ -cooling. We find that this cooling can be optimized by a proper choice of relative ODT and $\Lambda$ beam polarizations. In this optimized configuration, we observe molecules with temperatures as low as 14(1) $\mu$ K in traps with depths up to 570 $\mu$ K. With optimized parameters, we transfer $\!\sim\!5$ % of molecules from our radio-frequency magneto-optical trap into the ODT, at a density of $\sim\!2\times 10^{9}$ cm $^{-3}$ , a phase space density of $\sim\!2\times 10^{-7}$ , and with a trap lifetime of $\!\sim\!1$ s.

Keywords

laser cooling and trapping optical trapping ultracold molecules

Cite

@article{arxiv.2106.00622,
  title  = {Polarization Enhanced Deep Optical Dipole Trapping of $\Lambda$-cooled Polar Molecules},
  author = {Thomas K. Langin and Varun Jorapur and Yuqi Zhu and Qian Wang and David DeMille},
  journal= {arXiv preprint arXiv:2106.00622},
  year   = {2021}
}

Comments

7 pages main text (4 figures) plus references, additional 12 pages (2 figures) for supplemental material plus references; incorporated correction to trap depth calculation

Polarization Enhanced Deep Optical Dipole Trapping of $\Lambda$-cooled Polar Molecules

Abstract

Keywords

Cite

Comments

Related papers