Atom magnetic sensor for optical pump magnetometer

A technology of optical pump magnetometer and magnetic sensor, which is applied in the use of magneto-optical equipment for magnetic field measurement, the size/direction of the magnetic field, etc., which can solve the problems of measurement error and affecting the magnetic field value, and achieve the best effect of eliminating errors , Improve the effect of performance indicators

Active Publication Date: 2014-06-18
PEKING UNIV
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Problems solved by technology

Since the laser optically pumped magnetometer mainly realizes the measurement of the external magnetic field by measuring the frequency interval between the adjacent magneton energy levels of the atom, the frequency noise and power noise of the laser will be shifted by the optical frequency, resulting in a magnetic The sub-levels move randomly, changing the frequency interval between adjacent magnetic sub-levels, which directly affects the detected magnetic field value. Therefore, there are errors in the magnetic field measurement results of the traditional laser optically pumped atomic magnetometer.

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  • Atom magnetic sensor for optical pump magnetometer
  • Atom magnetic sensor for optical pump magnetometer

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Embodiment Construction

[0015] The present invention will be described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific embodiments are only used to further illustrate the present invention, and cannot be interpreted as limiting the protection scope of the present invention. Those of ordinary skill in the art can Some non-essential improvements and adjustments are made to the present invention according to the above-mentioned content of the invention.

[0016] like figure 1 Shown, the atomic magnetic sensor that the present invention is used for laser light pumping magnetometer comprises: the first half-wave plate 1, the first polarizing beam splitting prism 2, the second half-wave plate 3, the second polarizing beam splitting prism 4, the third Half wave plate 5, third polarizing beam splitting prism 6, quarter glass slide 7, Helmholtz coil 8, atomic gas chamber 9, mirror 10, prism 11, photodetector 12.

[0017] The ligh...

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Abstract

The invention belongs to the technical field of optical pump magnetometers and discloses an atom magnetic sensor for an optical pump magnetometer. The atom magnetic sensor comprises a first half wave plate (1), a first polarization beam splitter prism (2), a third half wave plate (5), a third polarization beam splitter prism (6), a one-quarter wave plate (7), a Helmholtz coil (16), an atom air chamber (9), a reflector (10), a prism (11) and a photoelectric detector (12). By the adoption of the atom magnetic sensor, magnetic field measurement result errors caused by optical frequency shift in the laser optical pump atom magnetometer can be eliminated, and the performance index of the laser optical pump atom magnetometer can be improved.

Description

technical field [0001] The invention relates to the technical field of an optical pump magnetometer, in particular to an atomic magnetic sensor used for an optical pump magnetometer. Background technique [0002] Magnetometer is a general term for magnetic measuring instruments. High-sensitivity magnetic measurement technology has extensive and important applications in the fields of biomedicine, geophysics, space exploration, military and national defense. At present, there are significant differences in the research level of magnetometry at home and abroad. Foreign advanced magnetometers have far surpassed our country in terms of sensitivity indicators. Therefore, it is of strategic significance to independently develop high-sensitivity magnetometers. The optically pumped atomic magnetometer is one of the most mature high-sensitivity magnetometers at present. The laser optically pumped atomic magnetometer can greatly improve the performance index due to its advantages su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/032
Inventor 郭弘彭翔罗斌吴腾公韦
Owner PEKING UNIV
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