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紧型多通道无线电频率脉冲序发电机,具有用于冷原子干扰仪的快速切换能力.
Min Jiang1, Si-Bin Lu1, Yang Li1,2
1State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China.
The Review of scientific instruments
|September 27, 2023
概括
一个新的紧型射频 (RF) 发电机使冷原子干扰仪能够快速切换. 该设备显著提高了现场便携式原子干扰应用的性能.
科学领域:
- 原子,分子和光学物理学
- 仪器仪表和测量仪器的使用
背景情况:
- 冷原子干扰仪对于基础物理学和新兴领域应用至关重要.
- 无线电频率 (RF) 发电机对于控制这些设备中的激光和原子至关重要.
研究的目的:
- 开发一个紧的射频发电机,用于原子干扰脉冲序列的快速频率和振幅切换.
- 为了提高冷原子干扰仪在现场设置中的适用性.
主要方法:
- 使用现场可编程网关阵列 (FPGA) 控制八个直接数字合成器 (DDS) 进行多通道射频信号生成.
- 实现了DDS寄存器的预加载方法,以消除脉冲序列执行期间的数据传输.
主要成果:
- 实现了100ns的频率切换时间和40dB的波排斥比率.
- 当应用到冷原子干扰仪陀螺仪时,在原子干扰边缘中显示出38%的对比度.
结论:
- 开发的紧型射频发电机为射频信号提供快速切换和扫描功能.
- 这项技术有利于推进现场便携式冷原子干扰仪和相关应用.
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