Luda Marcelo Alejandro, Drechsler Martin, Schmiegelow Christian Tomás, Codnia Jorge
CEILAP, CITEDEF, J. B. de La Salle 4397, 1603 Villa Martelli, Buenos Aires, Argentina.
Departamento de Física and IFIBA, FCEyN, UBA, Pabellón 1, Ciudad Universitaria, 1428 Buenos Aires, Argentina.
Rev Sci Instrum. 2019 Feb;90(2):023106. doi: 10.1063/1.5080345.
We present a multi-purpose toolkit for digital processing, acquisition, and feedback control designed for physics labs. The kit provides in a compact device the functionalities of several instruments: function generator, oscilloscope, lock-in amplifier, proportional-integral-derivative filters, ramp scan generator, and a lock-control. The design combines field-programmable-gate-array processing and microprocessor programing to get precision, ease of use, and versatility. It can be remotely operated through the network with different levels of control: from simple off-the-shelf Web graphical user interface to remote script control or in-device programmed operation. Three example applications are presented in this work on laser spectroscopy and laser locking experiments. The examples include side-fringe locking, peak locking through lock-in demodulation, and complete in-device Pound-Drever-Hall modulation and demodulation at 31.25 MHz and advanced acquisition examples like real-time data streaming for remote storage.
我们展示了一款专为物理实验室设计的用于数字处理、采集和反馈控制的多功能工具包。该工具包在一个紧凑的设备中提供了多种仪器的功能：函数发生器、示波器、锁相放大器、比例积分微分滤波器、斜坡扫描发生器和锁定控制。该设计结合了现场可编程门阵列处理和微处理器编程，以实现高精度、易用性和多功能性。它可以通过网络进行远程操作，具有不同级别的控制：从简单的现成网络图形用户界面到远程脚本控制或设备内编程操作。本文介绍了在激光光谱学和激光锁定实验中的三个示例应用。这些示例包括边带锁定、通过锁相解调进行峰值锁定，以及在31.25 MHz下完整的设备内庞德 - 德弗 - 霍尔调制和解调，还有诸如用于远程存储的实时数据流等高级采集示例。
