标题： 放电灯和激光泵浦铯磁强计的比较 显示英文标题

标题： Comparison of discharge lamp and laser pumped cesium magnetometers

摘要： 我们对激光（LsOPM）和灯泡（LpOPM）泵浦的铯蒸气磁力计进行了比较。 尽管LsOPM的运行超出其散粒噪声极限50%，但我们发现LsOPM和LpOPM的本征灵敏度分别为15 fT/\sqrt{Hz}和25 fT/\sqrt{Hz}。 研究了两种工作模式，即相位稳定模式和自激振荡模式，并发现它们表现出相似的性能。 我们通过同时测量多层磁屏蔽内2微特斯拉磁场的波动，直接比较了LsOPM和LpOPM的性能，并使用其中一种磁力计进行主动磁场稳定。 在稳定模式下，我们发现积分时间为100秒时的梯度不稳定性为25 fT，这代表了磁力计长期稳定性的上限。 显示英文摘要

摘要： We have performed a comparison of laser (LsOPM) and lamp (LpOPM) pumped cesium vapor magnetometers. Although the LsOPM operated 50% above its shot-noise limit we found an intrinsic sensitivity of 15 fT/\sqrt{Hz} and 25 fT/\sqrt{Hz} for the LsOPM and LpOPM respectively. Two modes of operation, viz.,the phase-stabilized and the self-oscillating mode were investigated and found to yield a similar performance. We have compared the performance of the LsOPM and the LpOPM directly by simultaneous measurements of field fluctuations of a 2 microtesla magnetic field inside a multilayer magnetic shield and have used one of the magnetometers for an active field stabilization. In the stabilized mode we found a gradient instability of 25 fT within an integration time of 100 s, which represents an upper limit of the long-term stability of the magnetometers.