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首页> 外文期刊>Optics Letters >Absolute frequency of cesium 6S-8S 822 nm two-photon transition by a high-resolution scheme
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Absolute frequency of cesium 6S-8S 822 nm two-photon transition by a high-resolution scheme

机译：高分辨率方案铯6S-8S 822 nm两光子跃迁的绝对频率

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摘要

We present an alternative scheme for determining the frequencies of cesium (Cs) atom 6S-8S Doppler-free transitions. With the use of a single electro-optical crystal, we simultaneously narrow the laser linewidth, lock the laser frequency, and resolve a narrow spectrum point by point. The error budget for this scheme is presented, and we prove that the transition frequency obtained from the Cs cell at room temperature and with one-layer μ-metal shielding is already very near that for the condition of zero collision and zero magnetic field. We point out that a sophisticated linewidth measurement could be a good guidance for choosing a suitable Cs cell for better frequency accuracy.
机译：我们提出了一种确定铯（Cs）原子6S-8S无多普勒跃迁频率的替代方案。通过使用单个电光晶体，我们可以同时缩小激光线宽，锁定激光频率并逐点解析狭窄的光谱。给出了该方案的误差预算，并且我们证明了在室温和具有一层μ-金属屏蔽的情况下从Cs电池获得的跃迁频率已经非常接近零碰撞和零磁场条件下的跃迁频率。我们指出，复杂的线宽测量可能是选择合适的Cs单元以获得更好的频率精度的良好指导。

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