Reynolds F C, McFerran J J
Appl Opt. 2019 Apr 20;58(12):3128-3132. doi: 10.1364/AO.58.003128.
Between a frequency comb mode and a continuous-wave (cw) laser, we demonstrate that a frequency-to-voltage converter can be used to transfer frequency instability in the 10 range for integration times τ between 0.25 and 2100 s. The technique is relevant when the optical beat between laser signals is weak and a high level of frequency stability is required both in the short term and long term, as in the case of laser cooling with very narrow transitions. The impressive stability transfer arises through the use of a synchronous voltage-to-frequency converter that relies on an external CMOS oscillator. Aided by an atomic reference to the frequency comb, the method grants long-term stability to the cw laser, superior to that achieved with most optical cavities.
在频率梳模式与连续波（cw）激光器之间，我们证明了频率 - 电压转换器可用于在积分时间τ为0.25至2100秒的情况下，传递10范围内的频率不稳定性。当激光信号之间的光拍频较弱且在短期和长期都需要高水平的频率稳定性时，该技术具有相关性，例如在具有非常窄跃迁的激光冷却情况下。令人印象深刻的稳定性传递是通过使用依赖外部CMOS振荡器的同步电压 - 频率转换器实现的。借助于频率梳的原子参考，该方法赋予cw激光器长期稳定性，优于大多数光学腔所实现的稳定性。
