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Large-beam cold atom source based on double-stage two-dimensional magneto-optical trap

A technology of magneto-optical traps and cold atoms, applied in radiation/particle processing, manipulation of neutral particles by radiation pressure, nuclear engineering, etc., to achieve obvious effects, increase lifespan, and increase the number of atoms

Active Publication Date: 2018-07-10
WUHAN INST OF PHYSICS & MATHEMATICS CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] The purpose of the present invention is to overcome the shortcomings and deficiencies caused by mutual constraints on the main technical parameters of the existing two-dimensional magneto-optical trap atom source technology, and to provide a large-beam cold atom source based on a double-stage two-dimensional magneto-optical trap

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  • Large-beam cold atom source based on double-stage two-dimensional magneto-optical trap

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Embodiment Construction

[0040] The following describes the cold atom source in detail with reference to the drawings and embodiments:

[0041] 1. Overall

[0042] Such as figure 1 , This cold atom source includes a first-level two-dimensional magneto-optical trap 10, a second-level two-dimensional magneto-optical trap 20 and a bellows 30;

[0043] The first-level two-dimensional magneto-optical trap 10, the bellows 30, the second-level two-dimensional magneto-optical trap 20, and the three-dimensional magneto-optical trap 40 are connected in sequence;

[0044] The included angle θ between the first center axis 112 and the second center axis 212 is 0-30°.

[0045] Two, functional components

[0046] 1. Level 1 two-dimensional magneto-optical trap 10

[0047] The first-level two-dimensional magneto-optical trap 10 includes a first-level vacuum cavity 11, a first cooling laser group 12, a first anti-Helmholtz coil group 13 and a rubidium source 14;

[0048] A first anti Helmholtz coil group 13 and a first cooling ...

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Abstract

The invention discloses a large-beam-current cold atom source based on a two-stage two-dimensional magneto-optical trap, and relates to cold atom sources in the field of cold atom physics. The cold atom source comprises a first-stage two-dimensional magneto-optical trap (10), a second-stage two-dimensional magneto-optical trap (20) and a corrugated pipe (30). The first-stage two-dimensional magneto-optical trap (10), the corrugated pipe (30), the second-stage two-dimensional magneto-optical trap (20) and a three-dimensional magneto-optical trap (40) are connected in sequence. The included angle theta between a first central axis (112) and a second central axis (212) is 0-30 degrees. According to the large-beam-current cold atom source, under the highest loading efficiency of the three-dimensional magneto-optical trap, the number of atoms can be increased, and the service life of atomic cloud can be prolonged, which has an obvious effect especially in the subsequent cooling process of the MOT; excellent atom sources can be provided for a precision measurement technology based on cold atoms.

Description

Technical field [0001] The invention relates to a cold atom source in the field of cold atom physics, in particular to a large beam cold atom source based on a two-stage two-dimensional magneto-optical trap. Background technique [0002] In the field of cold atom research, the preparation of a large number of low temperature cold atom sources is a prerequisite for basic and applied research. Three-dimensional magneto-optical trap [MOT] is an effective way to prepare cold atom sources, please refer to [New Journal of Physics 12 (2010) 095009, Nature 400 (1999) 849, etc.]. Under normal circumstances, the magneto-optical trap can load about 10% from the atomic background vapor in a few seconds. 8 ~10 9 Atom and cool it to the order of tens of microopens. [0003] In the process of loading atoms in the magneto-optical trap, if the background vacuum is relatively high and the background vapor pressure of the atoms is relatively small, the initial loading rate will be relatively slow, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21K1/00G21K1/093
CPCG21K1/006G21K1/093
Inventor 段维涛周林王谨詹明生
Owner WUHAN INST OF PHYSICS & MATHEMATICS CHINESE ACADEMY OF SCI
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