计量学报2012，Vol.33Issue(2)：172-177,6.DOI:10.3969/j.issn.1000-1158.2012.02.16
脉冲微波式氢原子钟的研究进展
Progress of Pulsed Microwave Hydrogen Maser
摘要
Abstract
The digital attenuator controlled by Complex Programmable Logic Device (CPLD) outputs two coherent pulsed microwave signals. They interact with hydrogen atoms and induce Ramsey interference. So the line width of hydrogen maser is reduced and the performance of frequency stability could be improved. Single Chip Micyoco(SCM) controls Direct Digital Synthesizer(DDS) to implement frequency sweep. So the Ramsey fringe is obtained. It' s all based on conventional passive hydrogen maser. So far,The Ramsey fringe was observed and its line width is about 1. 2 Hz, which is only 40% of that of conventional passive hydrogen maser in the same condition.关键词
计量学/氢原子钟/线宽/脉冲微波/Ramsey条纹Key words
Metrology/ Hydrogen maser/ line width/ Pulsed microwave/ Ramsey fringes分类
通用工业技术引用本文复制引用
陈鹏飞,谢勇辉,林传富..脉冲微波式氢原子钟的研究进展[J].计量学报,2012,33(2):172-177,6.基金项目
国家自然科学基金(11003037) （11003037）
