Compact embedded device for lock-in measurements and experiment active control
Abstract
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 out-of-the-shelve Web GUI 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 includes side-fringe locking, peak locking through lock-in demodulation, 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.
Cite
@article{arxiv.1811.01901,
title = {Compact embedded device for lock-in measurements and experiment active control},
author = {Marcelo Alejandro Luda and Martin Drechsler and Christian Tomás Schmiegelow and Jorge Codnia},
journal= {arXiv preprint arXiv:1811.01901},
year = {2019}
}
Comments
13 pages, 14 figures. For RSI submition