Ren Shuang, Tang Yu, Yang Chuang, Wang Siyuan, Zhou Hanbin
Appl Opt. 2024 May 20;63(15):4219-4225. doi: 10.1364/AO.523527.
We propose a method using electromagnetically induced transparency (EIT) to measure the frequency offset of the laser relative to a cavity's resonance frequency, thereby reducing the laser detuning when preparing Rydberg atoms. Laser reflection by the vapor cell enables observation of two EIT peaks corresponding to the co-propagating and counter-propagating beams, and the peaks' position is related to laser detuning, allowing us to estimate the frequency offset of the probe and coupling lasers. The method reduces the measurement uncertainty compared to directly observing saturated absorption spectroscopy (SAS) and EIT, making it suitable for applications that require strict control over laser detuning.
我们提出一种利用电磁诱导透明（EIT）来测量激光相对于腔共振频率的频率偏移的方法，从而在制备里德堡原子时减少激光失谐。蒸汽池对激光的反射使得能够观察到对应于同向传播和反向传播光束的两个EIT峰，并且这些峰的位置与激光失谐有关，这使我们能够估计探测激光和耦合激光的频率偏移。与直接观察饱和吸收光谱（SAS）和EIT相比，该方法降低了测量不确定性，使其适用于需要严格控制激光失谐的应用。
