Laser helium optical pump magnetic measurement device

• Main Authors: HU RUIFAN, ZHOU ZHIJIAN, WANG CHAO, CHEN JUN, CHENG DEFU, CAO XIYUAN
• Format: Patent
• Language: English
• Published: 25.03.2015
• Subjects: DETECTING MASSES OR OBJECTS; GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

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.