Sub-Doppler laser cooling of $^{39}$K via the 4S$\to$5P transition

We demonstrate sub-Doppler laser cooling of $ ^{39} $K using degenerate Raman sideband cooling via the 4S$_{1/2} \rightarrow $5P$ _{1/2} $ transition at 404.8 nm. By using an optical lattice in combination with a magnetic field and optical pumping beams, we obtain a spin-polarized sample of up to...

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Bibliographic Details
Main Author: Govind Unnikrishnan, Michael Gröbner, Hanns-Christoph Nägerl
Format: Article
Language:English
Published: SciPost 2019-04-01
Series:SciPost Physics
Online Access:https://scipost.org/SciPostPhys.6.4.047