【摘要】 实现了利用铯原子圆二向色性激光稳频(DAVLL)技术保证频率的非共振锁定并连续可调。介绍了DAVLL技术用于稳定激光频率的基本原理,指出由于Cs原子复杂的能级结构,导致简单的DAVLL技术此处不再适用,并且发现稳频曲线的零点与磁场强度的大小有关;利用饱和吸收光谱测量磁场对DAVLL谱线鉴频零点的影响,发现激光频率在以Fg=4→Fe=5跃迁红失谐105MHz为中心50MHz范围内线性可调,频率稳定度可达3MHz。更多还原

【Abstract】 The paper proves that dichroic atomic vapor laser lock(DAVLL) can ensure that the laser frequency be locked nonresonantly and adjusted continuously,because cesium magnetometer needs a detecting laser to be locked off-resonantly.The ordinary DAVLL theory is introduced and it is pointed out the simple stabilizing frequency method is not appropriate due to cesium complicated energy level construction of hyperfine transition.It′s found out that the zero point of frequency discrimination is relative to the intensity of magnetic field.The dependence of zero crossing on the magnetic intensity experimentally measured by the saturated absorption spectrum.The results show that the laser frequency can be locked and adjusted continuously centered at red-detuning 105 MHz relative to the Fg=4→Fe=5 transition with a range of 50 MHz.The frequency stability is about 3 MHz.更多还原