A versatile digital GHz phase lock for external cavity diode lasers
A versatile digital GHz phase lock for external cavity diode lasers
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DOI：
10.1088/0957-0233/20/5/055302
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发表时间：
2009-05-01
影响因子：
2.4
通讯作者：
Lvovsky, A. I.
中科院分区：
文献类型：
--
作者：
Appel, Jurgen;MacRae, Andrew;Lvovsky, A. I.
我们提出了一种通用的，廉价的和简单的光学锁相应用在原子物理实验。由于全数字相位检测和拍频预缩放的实现，该装置不需要微波范围的参考输入，并允许在sub-MHz至7 GHz（以及轻微扩展至12 GHz）的频率差下锁相。因此，锁定范围涵盖了所有碱金属的基态超精细分裂，这使得该系统成为许多光与原子之间相干相互作用实验的通用工具。
We present a versatile, inexpensive and simple optical phase lock for applications in atomic physics experiments. Thanks to all-digital phase detection and implementation of beat frequency pre-scaling, the apparatus requires no microwave-range reference input and permits phase locking at frequency differences ranging from sub-MHz to 7 GHz (and with minor extension to 12 GHz). The locking range thus covers ground-state hyperfine splittings of all alkali metals, which makes this system a universal tool for many experiments on coherent interaction between light and atoms.