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Cavity Cascade Enhancement and Sensitivity Tunable Atomic Gas Chamber

An atomic gas chamber and sensitivity technology, which is applied to the size/direction of the magnetic field and the use of magneto-optical equipment for magnetic field measurement, etc., to achieve the effect of improving sensitivity, convenient operation and clear principle

Active Publication Date: 2021-02-02
HUNAN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently no atomic gas cell that can further improve the sensitivity of the atomic magnetometer and at the same time achieve adjustable sensitivity.

Method used

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  • Cavity Cascade Enhancement and Sensitivity Tunable Atomic Gas Chamber
  • Cavity Cascade Enhancement and Sensitivity Tunable Atomic Gas Chamber
  • Cavity Cascade Enhancement and Sensitivity Tunable Atomic Gas Chamber

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Effect test

Embodiment Construction

[0026] See attached figure 1 , an atomic gas cell with cavity cascade enhancement and adjustable sensitivity, including glass bubble 1, gas atoms 2, linearly polarized probe light 3, F-P cavity 4, probe light transmission beam group 5, adjustable slit 6 and circular polarization Pump light 7, gas atoms 2 are sealed in glass bubble 1, glass bubble 1 is placed between two mirrors of F-P cavity 4, circularly polarized pump light 7 is incident and polarized along the direction perpendicular to the axis of F-P cavity 4 The gas atoms 2 in the glass bubble 1, the gas atoms 2 polarized by light generate a magnetic moment under the action of an external magnetic field, and the linearly polarized detection light 3 is incident along the direction oblique to the axis of the F-P cavity 4 and interacts with the polarized atoms in the glass bubble 1 Interaction, the polarization plane of the linearly polarized probe light 3 rotates, every time the linearly polarized probe light 3 passes thro...

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Abstract

An atomic gas cell with cavity cascade enhancement and adjustable sensitivity, including glass bubbles, gas atoms, linearly polarized probe light, F‑P cavity, probe light transmission beam group, adjustable slit and circularly polarized pump light, gas Atoms are sealed in a glass bubble, and the glass bubble is placed between two mirrors in the F‑P cavity. The circularly polarized pump light is incident on the direction perpendicular to the axis of the F‑P cavity and polarizes the gas atoms in the glass bubble. The polarized probe light is incident along the direction oblique to the axis of the F-P cavity and interacts with the polarized gas atoms in the glass bubble. The probe light transmission beam group generated under the action of the F-P cavity is selected by the adjustable slit The detection beam group for measurement realizes cavity cascade enhancement and adjustable sensitivity. The invention has the characteristics of clear principle, convenient operation, high measurement sensitivity and resolution.

Description

technical field [0001] The invention relates to the field of quantum precision measurement, in particular to an atomic gas chamber with cavity cascade enhancement and adjustable sensitivity. Background technique [0002] High-precision magnetic measuring instruments are widely used in many fields such as aeromagnetic exploration, magnetic navigation, brain science, and dark matter detection. The optical atomic magnetometer is one of the fastest-growing high-precision magnetometers. Foreign advanced magnetometers are still far superior to my country in terms of sensitivity. It is of great strategic significance to independently develop high-sensitivity magnetometers. The core of the atomic magnetometer is the atomic gas chamber, and its performance directly affects the measurement sensitivity of the atomic magnetometer. There are two main ways to improve the sensitivity of the atomic magnetometer by improving the performance of the atomic gas chamber: one is to prolong the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/032
CPCG01R33/032
Inventor 赵明伟刘明伟孙辉王琦谢尧欧云周伟平李艳华
Owner HUNAN UNIV OF SCI & TECH
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