论文标题
电动旋转安装座，用于快速且可重复的光学极化控制
A motorized rotation mount for fast and reproducible optical polarization control
论文作者
论文摘要
我们为半波板提供了一个简单的电动旋转安装座，可用于快速改变光的极化。我们使用该设备在超速原子实验中的不同光学偶极子陷阱之间切换高功率激光束。该设备使用带有空心轴的步进电动机，该电动机允许横梁沿着电动机轴的轴传播，从而最大程度地减少惯性和机械复杂性。一个简单的加工适配器用于安装波板。我们表征了设备的性能，重点是其能够在偏光梁的输出端口之间切换光束的能力。我们证明了15.9（3）MS的切换时间，受电机扭矩的限制。座的反应时间为0.52（3）ms，旋转分辨率为0.45度。旋转是高度可重现的，在11小时内，步进电动机在2000年重复测试中不会缺少步骤。
We present a simple motorised rotation mount for a half-wave plate that can be used to rapidly change the polarization of light. We use the device to switch a high power laser beam between different optical dipole traps in an ultracold atom experiment. The device uses a stepper motor with a hollow shaft, which allows a beam to propagate along the axis of the motor shaft, minimising inertia and mechanical complexity. A simple machined adapter is used to mount the wave plate. We characterise the performance of the device, focusing on its capability to switch a beam between the output ports of a polarizing beamsplitter cube. We demonstrate a switching time of 15.9(3) ms, limited by the torque of the motor. The mount has a reaction time of 0.52(3) ms, and a rotational resolution of 0.45 degrees. The rotation is highly reproducible, with the stepper motor not missing a step in 2000 repeated tests over 11 hours.
