Laser helium optical pump magnetic measurement device

Abstract

The invention relates to a laser helium optical pump magnetic measurement device. A laser device and frequency stabilizing unit is connected with an optical fiber through an optical coupling head, the optical fiber is connected with a helium chamber and accessory through an optical fiber fixing support, and the helium chamber and accessory is connected with a single chip microcomputer through a cable, so that the laser helium optical pump magnetic measurement device is formed. Compared with a helium lamp, the power consumed by a 1083nm helium atom single frequency semiconductor laser device is far less than the power consumed by the helium lamp under the same environment conditions. The 1083nm helium atom single frequency semiconductor laser device is used for replacing the helium lamp; because emitted laser beam spectral lines are narrow in range and are concentrated, detection signals of a photoelectric detector in a probe are strengthened under the circumstance that consumed power is low, design of a follow-up signal processing circuit is facilitated, the sensitivity and accuracy of an instrument can be greatly improved, magnetic information response of a detected object is more obvious and effective, analyzing and processing of measured magnetic field data are facilitated, and power consumption of the magnetic measurement device is greatly reduced while the strength of photoelectric detection signals is remarkably improved.

Description

Technical field: [0001] The invention relates to a helium optical pump magnetic measuring device, in particular to a laser helium optical pump magnetic measuring device used in the accurate measurement of environmental magnetic field values. Background technique: [0002] The existing helium optical pump magnetometer is one of the main tools for measuring the value of the environmental magnetic field. It can be used in geological and mineral resource exploration, earthquake prediction, military and medical center magnetic and brain magnetic monitoring and other fields. Especially in the measurement of the geomagnetic field, the helium optical pump magnetometer occupies a very important position, and it is the magnetometer with the highest magnetic measurement accuracy so far. The helium optical pump magnetometer can measure not only the total field of the geomagnetic field, but also the total field gradient; it can measure not only the slowly changing magnetic field, but als...

AI Technical Summary

Problems solved by technology

The helium optical pump magnetometer usually generates 1083.2nm light through the helium lamp, and the spectral line generated by the helium lamp is often wide, covering a wavelength range much larger than about 1083.2nm, and only using 1083.2nm will cause a huge power increase Waste, the instrument consumes a lot of power, which greatly wastes energy

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