IEEE Trans Ultrason Ferroelectr Freq Control. 2022 Feb;69(2):886-891. doi: 10.1109/TUFFC.2021.3133955. Epub 2022 Jan 27.
An acousto-optic (AO) device can be configured to operate in a standing wave (SW) mode. The effectiveness of an SW AO device surpasses the effectiveness of a conventional, running-wave one, when the driving signal frequency meets the SW condition. This SW frequency depends primarily on the acoustic wave velocity and the crystal length. While promising significant benefits, this situation imposes serious restrictions on the AO device performance. In this study, we examine the SW frequency dependency of such a device on its electrical impedance matching circuit (EIMC) parameters and configuration both theoretically and experimentally. Our analysis is aimed at this effect utilization for the purpose of expanding of the standing-wave AO devices applicability domain.
声光（AO）器件可以配置为在驻波（SW）模式下运行。当驱动信号频率满足 SW 条件时，SW AO 器件的效率超过传统的行波 AO 器件。此 SW 频率主要取决于声波速度和晶体长度。虽然有很大的好处，但这种情况对 AO 器件的性能施加了严重的限制。在这项研究中，我们从理论和实验两方面研究了 SW 频率对其电阻抗匹配电路（EIMC）参数和配置的依赖性。我们的分析旨在利用这种效应来扩展驻波 AO 器件的应用领域。
