论文标题
波动器的多通道光学开关和锁定系统
Multi-channel Opto-mechanical Switch and Locking System for Wavemeters
论文作者
论文摘要
在这里，我们提出了一个经济有效的多通道光学机电开关和软件PID系统，用于将多个激光器锁定到单个通道商业波电仪。该开关基于一个旋转的圆柱体，该旋转缸一次将一个激光器束选择性地传输到WaveMeter，计算机将读取波长，并向激光器输出误差信号，以纠正每毫秒的波长漂移。我们使用该系统稳定740 nm（随后频率加倍至370 nm），399 nm和935 nm激光器，以捕获和冷却YB+离子的不同同位素。我们通过使用第二个，更精确的商业波仪来表征三个激光器的频率稳定性。我们还使用被困的174YB+离子的荧光漂移速率来表征740 nm激光器的绝对频率稳定性。对于740 nm激光器，我们证明了3 x 10^-10（在20 s集成时间）的Allan偏差DF/F，相当于200 kHz的稳定性。
Here we present a cost effective multi-channel opto-mechanical switch and software PID system for locking multiple lasers to a single channel commercial wavemeter. The switch is based on a rotating cylinder that selectively transmits one laser beam at a time to the wavemeter, the wavelength is read by the computer and an error signal is output to the lasers to correct wavelength drifts every millisecond. We use this system to stabilise 740 nm (subsequently frequency doubled to 370 nm), 399 nm and 935 nm lasers for trapping and cooling different isotopes of Yb+ ion. We characterize the frequency stability of the three lasers by using a second, more precise, commercial wavemeter. We also characterise the absolute frequency stability of the 740 nm laser using the fluorescence drift rate of a trapped 174Yb+ ion. For the 740 nm laser we demonstrate an Allan deviation, df/f, of 3 x 10^-10 (at 20 s integration time), equivalent to sub-200 KHz stability.
