Open AccessDesign and research of two-dimensional magneto-optical trap of sodium atom using permanent magnets
Author(s) -
Ziliang Li,
Zhenlian Shi,
Pengjun Wang
Publication year - 2020
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.69.20200266
Subject(s) - magneto optical trap , magnet , trap (plumbing) , ultracold atom , zeeman effect , atom (system on chip) , atomic physics , materials science , magnetic field , physics , flux (metallurgy) , optics , laser , quantum mechanics , meteorology , computer science , quantum , embedded system , metallurgy
It is helpful to make full use of the laboratory space by simplifying the cold atom experimental system, especially in the area of aerospace and precision measurement. We present a two-dimensional magneto-optical trap (2DMOT) for sodium atoms, whose magnetic field is produced by four sets of permanent magnets, and the residual field in the vertical direction is used for a Zeeman slower. The atoms are cooled and trapped in a 2DMOT which provides a highly efficient atomic flux for three-dimensional magneto-optical trap (3DMOT) in a high-vacuum chamber. The maximum 3DMOT loading rate is measured to be 2.3 × 10 9 /s by optimizing the parameters of the Zeeman slower and the 2DMOT. The atom number trapped in 3DMOT is 6.2 × 10 9 . The 2DMOT designed by using permanent magnets has the property of compact structure and simple size, which can be used to cool and trap other neutral atoms.