The Design And Realization Of The Cesium Optical Pump Spectrum Lamp Energizing And Testing Circuit

The magnetic field measuring technique is an important mean to research the physical phenomena which relates to the magnetic phenomena. At present, in domains like scientific research, national defense development, industrial production and daily life, it is playing the very important role. Therefore, the research and the development of high performance's magnetic field measuring equipments has the profound significance.The optically pumped magnetometer is one kind of magnetic measurement equipment with high sensitivity which developed from the 1950s. It is based on the elemen atom energy level's zeem an effect in the magnetic field, made with optical pumping action and the magnetic resonance technology. The optically pumped magnetometer can not be ignored in the application prospect of the earth magnetic field measurement aspect. Appears after the proton magnetometer, the optically pumped magnetometer's sensitivity is extremely high, which belong to the high one in all kinds of magnetic field measurement devices put into the application. Based on all sorts of merits, the optically pumped magnetometer aroused universal attention around the world immediately since it has been published. It has been successfully developed to various types of optically pumped magnetic measurement equipment, and now it is in the phase of expanding the use and in-depth exploration.With the rapid development of electronics and microprocessor technologies, three major development trends in the aeromagnetic gradiometer survey system, including digitalization, miniaturization and intelligentize, have become clear.This paper, firstly, introduces the bloke diagram of the magnetic survey system. Base on the block diagram, the paper elaborates the optically pumped magnetometer's atomic physics principle, simultaneously, the character of magnetic field state selected cesium beam tube and optically pumped one are contrasted in this paper. The principles of improving the signal-to-noise ratio of optically pumped cesium beam tube are presented and the experiments of LD-pumped cesium beam tube are reported here.Then I analyze the working principles of the optically-pumped magnetometer, fluxgate magnetometer and proton magnetometer,and researched the signal detection technology of optically pumped magnetometer systematicly. It gives the overall structure diagram for the detection method of fast tracking with the doubled frequency error signal, and analyzes its working principle fully, then designs and produces the detection and control closed-loop system of the optically pumped magnetometer. Through the test we get the test data, and illustrate the effectiveness of the system design by analyzing the test results.