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Method for manufacturing atomic vapour bubble

A production method and steam technology, applied in the field of atomic optics and micro-processing technology, can solve the problems of difficult atomic bubbles, high production cost, high process requirements, etc., and achieve the effect of easy mass production, low product cost and simple processing technology

Active Publication Date: 2011-01-12
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For the first method, it is difficult to make atomic bubbles with a cross-section smaller than 1cm, and the cost is relatively high, making it difficult to produce on a large scale
The difficulty of the second method is to realize the welding of the intake pipe and the wall hole of the optical fiber, and the process requirements are relatively high.
The third method can realize the miniaturization of atomic vapor bubbles, which is convenient for large-scale production and reduces the cost, but requires special bonding equipment, and the production cost is very high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1. Select a capillary glass tube with a length of 20mm, an inner diameter of 1mm, and an outer diameter of 2mm, and place it in a vacuum chamber where the vacuum degree is higher than 10 -6 support;

[0021] 2. Fill the vacuum chamber with buffer gas: argon and nitrogen (the ratio is 1.4), the pressure is 1.5kPa, and at the same time fill with rubidium vapor, the density is 10 13 per cubic centimeter;

[0022] 3. Use a heating tape to wrap the vacuum chamber for heating, so that the temperature of the vacuum chamber is kept at 120°C;

[0023] 4. After 1 to 2 hours of gas mixing, the laser emitted by the carbon dioxide pulse laser is focused and incident on both ends of the glass tube for melting and sealing;

[0024] 5. Remove the heating belt, take out the sealed capillary glass tube, and heat the two end faces of the capillary glass tube with a hydrogen-oxygen flame to make the two end faces spherical without pores;

[0025] 6. Optically polish the end face to make...

Embodiment 2

[0027] 1. Select a hollow glass fiber with a length of 20mm, an inner diameter of 1mm, and an outer diameter of 1.5mm, and place it in a vacuum chamber where the vacuum degree is higher than 10 -6 support;

[0028] 2. Fill the vacuum chamber with nitrogen with a pressure of 1.3 kPa, and at the same time fill with cesium vapor with a density of 10 13 per cubic centimeter;

[0029] 3. Use a heating tape to wrap the vacuum chamber for heating, so that the temperature of the vacuum chamber is kept at 120°C;

[0030] 4. After 1 to 2 hours of gas mixing, the laser emitted by the carbon dioxide pulse laser is focused and incident on both ends of the hollow glass fiber for melting and sealing (the optical circuit diagram of the system is shown in Figure 1);

[0031] 5. Take off the heating belt, take out the sealed hollow glass optical fiber, and heat the two end faces of the hollow glass optical fiber at high temperature with an oxyhydrogen flame, so that the two end faces are sphe...

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Abstract

The invention relates to a manufacture method of atomic vapor bubbles, belonging to the technical field of atomic optics and microfabrication process. First, a capillary glass tube or a hollow fiber is put in a vacuum cavity, the vacuity of which is caused to be higher than 10<-6>torr; inert gas is filled in the vacuum cavity so as to be applicable to various clocks and magnetometers and basic metal vapor is filled too; the vacuum cavity is heated, and after uniform mixing of the gases, laser enters the two ends of the capillary glass tube or the hollow fiber for fused sealing; the sealed tube or hollow fiber is taken out, with two head faces being heated and caused to be astomatous spheres; and after being polished, the head faces are plated with antireflection coatings. The manufacture method has the advantages of simple processing technology and low cost.

Description

technical field [0001] The invention relates to an atomic vapor bubble and a manufacturing method thereof, belonging to the technical field of atomic optics and micro-processing technology. technical background [0002] In the research of miniature atomic optical devices such as miniature atomic clocks and miniature nuclear magnetic resonance gyroscopes, it is necessary to provide miniature atomic vapor bubbles. For the production of atomic vapor bubbles, the existing processes are as follows: The first method is the glass blowing method. The first method uses a glass tube with an air inlet tube to bond two optical glass windows to the two end faces of the glass tube by welding or chemical bonding, and then uses the gas-filled tube to fill in the required buffer gas and alkaline metal Steam, the atomic vapor bubbles are obtained after the intake pipe is melted and sealed. The second method is the hollow fiber melting method. In order to further reduce the volume of atomic b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/255C03B37/14
Inventor 冯焱颖张荣彦闫树斌
Owner TSINGHUA UNIV