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Atom magnetic sensor for optical pump magnetometer

An optical pump magnetometer and magnetic sensor technology, which is applied in the use of magneto-optical equipment for magnetic field measurement, magnetic field size/direction, etc. The effect of eliminating the effect of optical frequency shift

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

[0004] Although the traditional laser optically pumped atomic magnetometer can realize the magnetic field measurement, due to the existence of the optical frequency shift phenomenon, the atomic energy level (especially the magneton energy level under the external magnetic field) moves, and the magnetic resonance frequency changes accordingly. The magnetic field value calculated by the frequency also changes, so 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

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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] Such as figure 1 Shown, the atomic magnetic sensor that the present invention is used for laser optical pump magnetometer comprises: the first half-wave plate 1, the second half-wave plate 3, the 3rd half-wave plate 5, the 4th half-wave plate 8, the 5th half-wave plate Sheet 9, first polarizing beam splitting prism 2, second polarizing beam splitting prism 4, third polarizing beam splitting prism 6, fourth polarizing beam splitting prism 10, fifth polarizing beam spl...

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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 third half wave plate (5), a fourth half wave plate (8), a fifth half wave plate (9), a first polarization beam splitter prism (2), a third polarization beam splitter prism (6), a fourth polarization beam splitter prism (10), a fifth polarization beam splitter prism (7), a sixth polarization beam splitter prism (11), a first one-quarter wave plate (12), a second one-quarter wave plate (13), a first atom air chamber (14), a second atom air chamber (15), a first Helmholtz coil (16), a second Helmholtz coil (17), a first photoelectric detector (18) and a second photoelectric detector (19). 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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IPC IPC(8): G01R33/032
Inventor 郭弘彭翔罗斌公韦吴腾
Owner PEKING UNIV
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