光泵磁力仪中磁共振光学检测方法研究

在光泵磁力仪中,直接检测塞曼能级跃迁时的信噪比非常低,而采用磁共振光学检测技术,可把对微波量子的检测变换到对能量较微波量子大数万倍的光子的检测上,可大幅度得提高检测信号的信噪比.为此,针对光泵磁力仪中磁共振的光学检测方法进行了研究,论述了吸收室透明度检测法、正交光束检测法、自旋交换碰撞法和调制泵浦光法的基本原理及实验装...

Research of Magnetic Resonance's Optical Detection Method in Optically Pumped Magnetometer

In the optically pumped magnetometer,the signal to noise ratio is very low when use the method of detecting Zeeman energy level transition directly.However,the detected signal to noise ratio can be greatly improved by using the technique of magnetic resonances optical detection which can transform the microwave quantum detection to the photon detection,because the energy of photon is much greater than that of microwave quantum.The method of magnetic resonances optical detection in the OPM(Optically Pumped Magnetometer) has been studied,the principles and experimental devices are discussed which includes the method of detection of cells transparency,detection of orthogonal beams,spin exchange collision and the method of pump beam modulation.The characteristics of these methods are analyzed and compared,the application and complexity are considered,and all these will provide the basis for the design of the optically pumped magnetometer.