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首页> 外文期刊>Bulletin of the American Physical Society >APS -84th Annual Meeting of the APS Southeastern Section - Event - Microprocessor-based control system for cooling and trapping $^{mathrm{6}}$Li atoms
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APS -84th Annual Meeting of the APS Southeastern Section - Event - Microprocessor-based control system for cooling and trapping $^{mathrm{6}}$Li atoms

机译：APS-APS东南分部第84届年会-事件-用于冷却和捕获$ ^ {mathrm {6}} $ Li原子的基于微处理器的控制系统

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摘要

We present an electronic control system for laser cooling and trapping experiments. The system is responsible for all signal generation and timing used to generate a magneto-optical trap (MOT) of $^{mathrm{6}}$Li, and for subsequent optical trapping and imaging. Our system is capable of driving acousto-optical modulators (AOMs), controlling magnetic fields, stabilizing laser intensities, and operating cameras, all of which are synchronized to a sub-microsecond interval. This improves upon other systems by incorporating a feedback element to the AOM (which allows laser intensity stabilization), by centralizing control to one computer, and by allowing simultaneous adjustment of all devices in the control system. Having a centralized control system permits us to both image the atomic trap and manage any beam from a single computer. Our control system is realized by pairing a microprocessor with each electronic device, allowing the user to tune system parameters quickly and efficiently. Communicating with the microprocessors is a two-step process. We first use TCP/IP communications to transmit to an Ethernet-capable microprocessor, which then uses serial UART communications to disseminate commands to the individual devices. Finally, we have developed a user interface that streamlines the process of controlling an experiment and removes the need for users to program a sequence.
机译：我们提出了一种用于激光冷却和捕获实验的电子控制系统。该系统负责所有信号生成和时序，这些信号和时序用于生成$ ^ {mathrm {6}} $ Li的磁光陷阱（MOT），并负责后续的光陷阱和成像。我们的系统能够驱动声光调制器（AOM），控制磁场，稳定激光强度以及操作摄像头，所有这些都同步到亚微秒间隔。通过将反馈元素合并到AOM（允许激光强度稳定），将控制集中到一台计算机以及允许同时调整控制系统中的所有设备，这对其他系统有所改善。拥有集中控制系统使我们既可以对原子阱成像，也可以管理来自单台计算机的任何光束。我们的控制系统是通过将微处理器与每个电子设备配对来实现的，从而允许用户快速而有效地调整系统参数。与微处理器通信是一个两步过程。我们首先使用TCP / IP通信传输到具有以太网功能的微处理器，然后使用串行UART通信将命令传播到各个设备。最后，我们开发了一个用户界面，该界面可简化控制实验的过程，并且无需用户对序列进行编程。

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