一个机动旋转,用于在20毫秒以下的时间内使用偏振控制来切换光束路径
Adarsh P Raghuram1, Jonathan M Mortlock1, Sarah L Bromley1
1Department of Physics, Durham University, South Road, Durham DH1 3LE, United Kingdom.
The Review of scientific instruments
|October 20, 2023
概括
我们开发了一种半波板的机动挂,用于在超冷原子实验中快速切换激光偏振. 该设备为光学二极管陷提供快速,可重现的极化控制.
科学领域:
- 原子,分子和光学物理学
- 实验物理实验物理学
- 光学和光子学 在光学和光子学.
背景情况:
- 精确控制光极化对于操纵光二极管陷中的超冷原子至关重要.
- 现有的快速变化的光极化方法可能很复杂或缺乏可重现性.
研究的目的:
- 为半波板设计和描述一个简单的,电动的旋转支架.
- 为了实现激光束偏振的快速和精确切换,用于超冷原子实验中的应用.
主要方法:
- 使用一个带有空洞轴的步进电机来最大限度地减少惯性,并允许光束传播.
- 一个定制的机械适配器将半波板固定在电机轴上.
- 通过测量偏振束分离器立方体输出之间的切换时间和旋转精度来评估性能.
主要成果:
- 电动装配器实现了光束切换时间15.9{\displaystyle 15.9}{\displaystyle 15.9}{\displaystyle 15.9}{\displaystyle 15.9}{\displaystyle 15.9}}{\displaystyle 15.9}{\displaystyle 15.9}}{\displaystyle 15.9}{\displaystyle 15.9}}{\displaystyle 15.9}{\displaystyle 15.9}{\displaystyle 15.9}}{\displaystyle 15.9}{\displaystyle 15.9}}}
- 该系统表现出0.52(3) ms的低反应时间和0.45(4) °的高旋转分辨率.
- 步进电机表现出极好的可重复性,在11个小时内完成了2000次测试,没有错过任何步骤.
结论:
- 研发的机动半波板固定装置为快速极化控制提供了简单有效的解决方案.
- 它的速度,精度和可重复性使其适用于动态应用,例如在超冷原子研究中切换光二极管陷.
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