用于冷原子干涉仪的声光调制器数字驱动系统

J4 ›› 2014, Vol. 31 ›› Issue (5): 554-562.

用于冷原子干涉仪的声光调制器数字驱动系统

王欣然¹,李一民¹,涂娟¹,熊宗元¹,王谨²,詹明生¹

1中国科学院武汉物理与数学研究所波谱与原子分子物理国家重点实验室，湖北武汉430071； 2中国科学院冷原子物理中心，湖北武汉 430071； 3中国科学院大学，北京 100049

收稿日期:2014-01-20 修回日期:2014-02-27 出版日期:2014-09-28 发布日期:2014-09-17
通讯作者: 詹明生（1961-），湖北人，研究员，研究方向为冷原子物理。 E-mail:mszhan@wipm.ac.cn
作者简介:王欣然（1989-），研究生，主要从事冷原子实验控制系统研究工作。E-mail：xinranjqb@wipm.ac.cn
基金资助:
国家自然科学基金资助项目（11074281）、国家重点基础研究规划课题（2010CB832805）

Digital driving system for acousto-optic modulators in cold atom interferometer

WANG Xin-ran1,2,3, LI Yi-min1,2,3, TU Juan1,2,3, XIONG Zong-yuan1,2, WANG Jin1,2, ZHAN Ming-sheng1,2

1 State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China 2 Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 430071, China 3 University of Chinese Academy of Sciences, Beijing 100049, China

Received:2014-01-20 Revised:2014-02-27 Published:2014-09-28 Online:2014-09-17

摘要/Abstract

摘要： 为了满足冷原子干涉实验对激光移频的需求、实现移频速率的精确可控，设计并实现了一个带有操作界面的声光调制器数字驱动与控制系统。该系统由三个部分组成，分别是上位机，微处理器控制芯片，射频信号产生芯片。其中上位机用于收集控制信息；微处理器控制芯片用于根据上位机发送来的控制信息实现对射频信号产生芯片的控制、产生驱动声光调制器晶体的射频信号，从而实现对实验中所需的激光进行移频。该系统可输出频率为0~150 MHz且相位噪声低至-116 dBc/Hz的射频信号，同时可有效控制输出信号的幅度、相位和扫频速率等，该系统提供了满足冷原子干涉实验需求的多种工作模式。

关键词: 激光技术；激光移频；声光调制；驱动系统

Abstract: In order to meet the need of laser frequency shift and precision sweep in cold atom interferometry experiments, a control system for acousto-optic modulator with digital interface is designed and implemented. The control system consists of three components, namely upper computer (PC), microcontroller (ARM) and radio-frequency generator (DDS). Among them, PC is used to collect control information; ARM chip controls the DDS chip according to control information, so that the DDS chip can generate a RF driving signal for acousto-optic modulator, and obtain the desired laser frequency for experiments. The control system can output RF signals with frequency of 0~150 MHz and phase noise as low as -116 dBc/Hz. Meanwhile, the amplitude, phase and frequency sweep rate and other parameters of the output signals can be controlled efficiently. Additionally it offers a variety of operating modes to meet different requirements in cold atom interferometry experiments.

Key words: Laser techniques; Laser frequency shift; Acousto-optic modulation; Drive system

中图分类号:

O562

王欣然李一民涂娟熊宗元王谨詹明生. 用于冷原子干涉仪的声光调制器数字驱动系统[J]. J4, 2014, 31(5): 554-562.

WANG Xin-ran1,2,3, LI Yi-min1,2,3, TU Juan1,2,3, XIONG Zong-yuan1,2, WANG Jin1,2, ZHAN Ming-sheng1,2. Digital driving system for acousto-optic modulators in cold atom interferometer[J]. J4, 2014, 31(5): 554-562.

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