高功率宽调谐声光调制器驱动源的研究

doi:10.3969/j.issn.1007-5461.2025.02.009

摘要/Abstract

摘要： 声光调制器是一种重要的光学器件, 其性能在很大程度上依赖于驱动源的性能。因此, 针对不同的应用场景, 研制高性能的声光调制器驱动源具有重要意义。本文针对量子光学领域真空压缩光制备中光学参量振荡腔腔长锁定对声光调制器的应用需求, 设计了一款高性能声光调制器驱动源。该驱动源以射频金属氧化物半导体 (MOS) 场效应管放大模块RA07H0608M为核心器件, 输入信号经阻抗匹配电路、高通滤波放大电路、功率放大电路后, 最终输出到声光调制器中, 同时, 监测电路对工作温度和信号功率进行实时监测。实验结果表明, 该声光调制器驱动源能够实现频率和功率的连续调谐, 在75~85 MHz的工作频率范围内, 输入输出信号具有良好的线性关系, 输出功率高达1 W, 并且同时具有超温和超功率自动关断保护功能, 完全满足声光调制器长时间稳定运行的要求。

关键词: 光电子学, 声光调制器驱动源, 射频金属氧化物半导体(MOS)场效应管, 连续调谐, 自动关断保护电路

Abstract: Acousto-optic modulator is an important optical device, and its performance largely depends on the quality of driving power supply. Therefore, it is of great significance to develop high performance acousto-optic modulator driving power supply for different application scenarios. In order to meet the application requirement of optical parametric oscillation cavity length locking for acousto-optic modulator in vacuum squeezed light preparation in quantum optics, a high-performance acousto-optic modulator driving power supply is designed in this work. In this driving supply, the radio frequency metaloxide-semiconductor field-effect transistor (RF MOSFET) amplifier module RA07H0608M is proposed as the core device, and the input signal is finally injected into acousto-optic modulator after passing through impedance matching circuit, high-pass filtering amplifier circuit and power amplification circuit. At the same time, the monitoring circuit monitors the working temperature and signal power in real time. The results show that the acousto-optic modulator driving supply can achieve continuous frequency and power tuning. In the operating frequency range of 75-85 MHz, the input and output signals have a good linear relationship, the output power is up to 1 W, and automatic shutdown protection of over-temperature and over-power can be achieved. It is indicated that the designed driving power supply can fully meet the requirements of long-term stable operation of acousto-optic modulator.

Key words: optoelectronics, acousto-optic modulator driving power supply, radio frequency metal-oxidesemiconductor field-effect transistor, continuous tuning, automatic shutdown and protection circuit

中图分类号:

TN384

王锦荣 , 吴双娥 , 米成栋 , 朱梦琦 , 程子源 , 高旭珍 , 史旭蓉 , 杜胜利 . 高功率宽调谐声光调制器驱动源的研究[J]. 量子电子学报, 2025, 42(2): 238-245.

WANG Jinrong , WU Shuang'e , MI Chengdong , ZHU Mengqi , CHENG Ziyuan , GAO Xuzhen , SHI Xurong , DU Shengli . Research on driving power supply for high⁃power and broad tuning acousto⁃optic modulator[J]. Chinese Journal of Quantum Electronics, 2025, 42(2): 238-245.

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