The peculiarities of Ramsey resonance and its sensitivity to the light shift from an optically dense medium of cold atoms are investigated. Different composite pulse protocols for clock spectroscopy, including hyper-Ramsey, modified and generalised hyper-Ramsey schemes, are compared. Error signals change significantly due to the processes of absorption and dispersion in the atomic medium. The dependence of the position of the central fringe resonance with a residual uncompensated light shift of the atomic transition is studied with the attenuation of the radiation intensity in the medium taken into account. It is shown that using a combination of generalised hyper-Ramsey error signals allows one to suppress the sensitivity to the light shift for any length of the medium.

中文翻译：

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两能级原子光密介质中的广义超拉姆齐光谱

研究了拉姆齐共振的特性及其对来自冷原子光密介质的光位移的敏感性。比较了用于时钟光谱的不同复合脉冲协议，包括超拉姆齐、修改和广义超拉姆齐方案。由于原子介质中的吸收和分散过程，误差信号会发生显着变化。研究了中心条纹共振位置与原子跃迁的残余未补偿光位移的相关性，同时考虑了介质中辐射强度的衰减。结果表明，使用广义超拉姆齐误差信号的组合可以抑制任何长度介质对光移的敏感性。