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Heating structure and method for eliminating alternating current stark effect in atomic magnetometer

An AC Stark, atomic magnetometer technology, applied in the field of weak magnetic field detection, can solve problems such as reducing the accuracy of magnetic measurement, and achieve the effect of reducing overall performance, eliminating virtual magnetic field, and reducing influence

Inactive Publication Date: 2021-07-16
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

This effect can be equivalent to a virtual magnetic field that will reduce the accuracy of magnetic measurement

Method used

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  • Heating structure and method for eliminating alternating current stark effect in atomic magnetometer
  • Heating structure and method for eliminating alternating current stark effect in atomic magnetometer
  • Heating structure and method for eliminating alternating current stark effect in atomic magnetometer

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Embodiment

[0027] Step (a):

[0028] Adjust the optical path, the pump light in the 3D printing probe, and the heating light 1 combine to form a beam of light to illuminate the reflector. The mirror 1 and the beam splitter are at 45 degrees to the horizontal plane to ensure that the optical path is vertically incident on the atomic gas cell. The second beam and the third beam of heating light are reflected to the air chamber by the beam combining mirror. The beam combining mirror is respectively 45 degrees and 135 degrees away from the horizontal plane, and the reflected light-passing surface is aimed at the heating light. The side view of the whole probe is as shown figure 1 .

[0029] Step (b):

[0030] Print the probe designed in step (a) as a real object, cut out a suitable optical device, place the beam splitter with a size of 5mm*5.5mm*1.4mm in the corresponding notch of 6mm*6mm*1.6mm, and fix it with glue. Place the reflector with a size of 5mm*5.5mm*1.4mm in the corresponding...

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Abstract

The invention relates to the technical field of weak magnetic detection, and discloses a method for eliminating an alternating current stark effect in an atomic magnetometer. Two beams of 1550 nm laser with the same power, polarization state and light spot size are adopted as a heating light source of a rubidium atom gas chamber in a magnetometer. The two beams of heating light are emitted into an atomic gas chamber from opposite directions, and light paths in the rubidium atomic gas chamber are overlapped. The structure of the two beams of heating light described by the invention can effectively reduce the alternating-current stark effect generated by the heating light on the atomic gas chamber, and the alternating-current stark effect can be equivalent to a virtual magnetic field to influence the performance of the magnetometer. The two beams of light generate same and reverse virtual magnetic fields respectively, and the virtual magnetic fields are offset according to the magnetic field superposition principle. The method is suitable for a light heating type atom magnetometer system, a light heating type magnetometer is rapid in development and bright in foreground, and the touch magnetic sensitivity limit of the atom magnetometer is facilitated.

Description

technical field [0001] The invention relates to the technical field of weak magnetic detection, in particular to a performance optimization technology of an atomic magnetometer based on light heating. Background technique [0002] Since the development of weak magnetic sensing technology, the atomic magnetometer has become the most sensitive sensor in the field of weak magnetic sensing. The core of the atomic magnetometer lies in the atomic gas chamber, and the atoms in the gas chamber need to be pumped by the light of the D1 resonance line. Continuous improvements in semiconductor technology have resulted in an endless stream of reliable, compact, inexpensive and easily configurable diode lasers. The resulting dense atomic vapor has a longer ground state relaxation time. Advances in these technologies have enabled the performance of optical field weakening sensors to touch and even exceed most traditional field weakening sensors. Atoms use alkali metal atoms as working s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/032H05B3/00
CPCG01R33/032H05B3/0033
Inventor 覃添张洋何孟阳吴梓楠岳慧敏欧中华刘永
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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