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Detection device and method for metal steam atomic density of microstructure alkali metal gas chambers

An alkali metal gas chamber and atomic density technology, applied in measuring devices, specific gravity measurement, instruments, etc., can solve problems such as inability to ensure the consistency of each gas chamber unit, inaccurate measurement results, time-consuming optical path modulation, etc., to achieve optical path modulation Save time, improve signal-to-noise ratio, and lower detection cost

Active Publication Date: 2015-11-11
NO 49 INST CHINESE ELECTRONICS SCI & TECH GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention is to solve the problem that the existing alkali metal gas chamber detection device can only inspect the gas chambers one by one, resulting in time-consuming optical path modulation and high detection cost, and the inaccurate measurement results due to the inability to ensure the consistency of the detection of each gas chamber unit , thereby providing a detection device for the atomic density of alkali metal vapor in a microstructured alkali metal gas chamber and a method for detecting the atomic density of alkali metal vapor in a microstructured alkali metal gas chamber using the device

Method used

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  • Detection device and method for metal steam atomic density of microstructure alkali metal gas chambers
  • Detection device and method for metal steam atomic density of microstructure alkali metal gas chambers
  • Detection device and method for metal steam atomic density of microstructure alkali metal gas chambers

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specific Embodiment approach 1

[0027] Specific implementation mode one: refer to figure 1 This embodiment is specifically described. The detection device for the atomic density of alkali metal vapor in the microstructure alkali metal gas chamber described in this embodiment includes a laser 1, a collimation system 2, an attenuator 3, a beam expander 4, and an acquisition signal processing circuit 5 , standard gas chamber assembly 6, convex lens 7 and photoelectric cell array 8,

[0028] The collimation system 2 collimates and transmits the beam emitted by the laser 1 to the attenuator 3, and the attenuator 3 transmits the beam to the beam expander 4, and the beam expander 4 collimates and transmits the beam to the microstructure alkali metal gas cell or the standard gas cell Component 6, microstructure alkali metal gas chamber or standard gas chamber The gas cell unit of component 6 transmits the light beam to the convex lens 7, and the convex lens 7 gathers the light beam to the photocells of the photocell...

specific Embodiment approach 2

[0030] Specific embodiment two: this embodiment is to further illustrate the detection device of the microstructure alkali metal gas chamber alkali metal vapor atomic density described in specific embodiment one, in the present embodiment, the distance between photoelectric cell array 8 and convex lens 7 is l, l=f(1-h 2 / h 1 ), where f is the focal length of convex lens 7, h 2 is the side length of the photocell unit in the photocell array 8, h 1 is the side length of the alkali metal gas cell.

specific Embodiment approach 3

[0031] Specific implementation mode three: refer to Image 6 and Figure 7 This embodiment is described in detail. This embodiment is a further description of the detection device for the atomic density of the alkali metal vapor in the microstructure alkali metal gas chamber described in the first embodiment. In this embodiment, the photoelectric cell array 8 is a The metal gas chamber matches the photocell array.

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Abstract

The invention relates to a detection device and method for the metal steam atomic density of microstructure alkali metal gas chambers, and relates to the technical field of detection of microstructure alkali metal gas chambers. The detection device and method for the metal steam atomic density of the microstructure alkali metal gas chambers solve the problems that an existing alkali metal gas chamber detection device can only detect the gas chambers one by one, consequently, much time is consumed for light path modulation, the detection cost is high, and the consistency of detection of all gas chamber units cannot be ensured. The microstructure alkali metal gas chambers and a photoelectric tube array have similarities, light beams transmitted out of the gas chambers are focused by convex lenses and then are transmitted to corresponding photoelectric tubes respectively, a collecting signal processing circuit is used for comparing and analyzing detection signals and detection signals of a standard gas chamber, and finally detection of the metal steam atomic density of all the gas chamber units is achieved. The detection device and method for the metal steam atomic density of the microstructure alkali metal gas chambers are suitable for detection of chip atomic clocks, microstructure atomic magnetometers, minitype atomic spinning tops and other microstructure devices, and especially suitable for detection of imaging systems with the wafer-level microstructure alkali metal gas chambers as magnetic array imaging sensing units.

Description

technical field [0001] The invention relates to the detection technology of a microstructure alkali metal gas chamber. Background technique [0002] With the development of science and technology, the production process of microstructured alkali metal gas chambers has appeared. Microstructured alkali metal gas chambers are the core components of new principle quantum sensor devices such as chip atomic clocks, microstructured atomic magnetometers, and miniature atomic gyroscopes. The status directly affects the performance index of the corresponding product, especially in the magnetic imaging array system in the future, a single air chamber in the microstructured alkali metal air chamber will play a key role as a magnetic array imaging sensitive unit. However, due to the relatively active alkali metal elements, they are very easy to react with oxygen and water in the air at room temperature and lose their effect, and are easy to vaporize, which leads to the loss of alkali met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N9/24
Inventor 王辉徐兴烨张鹏孙立凯吴亚林王劲松
Owner NO 49 INST CHINESE ELECTRONICS SCI & TECH GRP
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