Wang Shaomao, Cao Jian, Yuan Jinbo, Liu Daoxin, Shu Hualin, Huang Xueren
Opt Express. 2020 Apr 13;28(8):11852-11860. doi: 10.1364/OE.383115.
We present a simple, compact, and efficient scheme for integrated multiple wavelength stabilization and continuous operation of a transportable Ca optical clock using a multi-channel cavity. The fractional frequency instability of 729 nm clock laser is ∼ 1.5 ×10 at 10 s with an approximate linewidth of 1 Hz. Meanwhile, frequency fluctuations of all the other lasers are less than ± 330 kHz/day. The one-day stability of this clock is measured as ∼ 5 ×10 through 72 h continuous operation. This scheme is potentially useful for the realization of next-generation transportable optical clocks and other metrological systems.
我们提出了一种简单、紧凑且高效的方案，用于使用多通道腔对可移动钙光钟进行多波长稳定集成和连续运行。729纳米时钟激光在10秒时的分数频率不稳定度约为1.5×10 ，线宽约为1赫兹。同时，所有其他激光器的频率波动小于±330千赫/天。通过72小时连续运行，该时钟的一日稳定性测量值约为5×10 。该方案对于实现下一代可移动光钟和其他计量系统可能具有重要意义。
