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

A technology of magneto-optical traps and cold atoms, which is used in radiation/particle processing, manipulation of neutral particles by radiation pressure, nuclear engineering, etc.

Active Publication Date: 2017-06-13
WUHAN INST OF PHYSICS & MATHEMATICS CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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

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Embodiment Construction

[0040] Below in conjunction with accompanying drawing and embodiment the cold atom source is described in detail:

[0041] 1. Overall

[0042] Such as figure 1 , the 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-stage two-dimensional magneto-optical trap 10, the bellows 30, the second-stage two-dimensional magneto-optical trap 20 and the three-dimensional magneto-optical trap 40 are sequentially connected;

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

[0045] 2. Functional components

[0046] 1. The first level two-dimensional magneto-optical trap 10

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

[0048] The first anti-Helmholtz coi...

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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 double-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, see [New Journal of Physics 12 (2010) 095009, Nature 400 (1999) 849, etc.]. Typically, a magneto-optical trap can be loaded with about 10 8 ~10 9 atoms, and cooled down to tens of microkelvins. [0003] In the process of loading atoms in the magneto-optical trap, if the background vacuum degree is high and the atom background vapor pressure is relatively small, the initial loading rate will be relatively slow, and the number of atoms reaching the equilibrium state will be relatively small...

Claims

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Application Information

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Patent Type & Authority Applications(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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