Research On The Compact Optically Pumped Cs Atomic Magnetometer

In recent years, methods of the magnetic measurement have been developed for a lot of applications. It makes magnetic measurement, especially the precise magnetic measurement, becomes more important areas where domestic and foreign experts pay much attention. We have made some progress in the magnetic equipment, but there is a gap between the foreign commercialized instruments with high sensitivity and our instruments. So this paper focuses on the miniaturization of the sensor which can accurately measure the magnetic field based on the theory of optically pumping and magnetic resonance.Optically pumped magnetometer(OPM) is a magnetometer which is widely used in many areas because of its high sensitivity, simplicity of its control system. Theoretically, optically pumped magnetometer can be divided into two types:lamp and laser pumped magnetometer. And laser pumped magnetometer can be used in many fields for its small scale and low power consumption. We have studied laser optically pumped Mz magnetometers and make it possible. And then we assemble all of necessary optical elements to be a sensor which is equipped with a simple control system. We finally test it around the field environment.In the first chapter, we introduce the background of the investigation of the magnetometer, compare some types of traditional magnetometers and describe the development of the optically pumped magnetometers. In the second chapter, we explain the basic theory of the optically pumped magnetometer is. In the third chapter, the miniaturized optical sensor and control system is introduced. In the fourth chapter, the experimental data is shown and analyzed. In the fifth chapter, we summarize the overall work and imagine the magnetometer in the future.