| 脉冲微波式氢原子钟初期电路设计 |
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| 引用本文： | 陈鹏飞,谢勇辉,林传富.脉冲微波式氢原子钟初期电路设计[J].中国科学院上海天文台年刊,2011(0). |
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| 作者姓名： | 陈鹏飞 谢勇辉 林传富 |
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| 作者单位： | 中国科学院上海天文台;中国科学院研究生院; |
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| 基金项目： | 国家自然科学基金(11003037); 中国科学院知识创新工程青年人才领域前沿项目 |
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| 摘 要： | 上海天文台时间频率研究室以原有被动型氢钟物理部分为基础,开展了脉冲微波式氢原子钟的研究。设计电路产生2个相干微波脉冲,连续激励氢原子跃迁,模拟双腔共振,使氢原子发生Ramsey干涉,压缩氢原子跃迁谱线宽度,以期提高氢原子钟短期稳定度指标。具体做法为:用DDS产生扫频电路,混频生成1.420 405 GHz激励信号后,再用CPLD产生脉冲时序控制数字衰减器,将激励信号衰减为脉冲形式,激励氢原子发生Ramsey干涉,导出微波信号并进行相关处理就可以产生Ramsey条纹。已观测到Ramsey干涉条纹,其中心峰宽度为1.2 Hz,相比传统被动型氢原子钟压缩了60%。
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| 关 键 词： | 氢原子钟 脉冲微波 扫频电路 Ramsey干涉 线宽 |
Preliminary Circuit Design of Pulsed Microwave Hydrogen Maser |
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| CHEN Peng-fei,XIE Yong-hui,LIN Chuan-fu.Preliminary Circuit Design of Pulsed Microwave Hydrogen Maser[J].Annals of Shanghai Observatory Academia Sinica,2011(0). |
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| Authors: | CHEN Peng-fei XIE Yong-hui LIN Chuan-fu |
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| Institution: | CHEN Peng-fei~(1,2),XIE Yong-hui~1,LIN Chuan-fu~1 (1.Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030,2.Graduate University of Chinese Academy of Science,Beijing 100049) |
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| Abstract: | Time & frequency research center in Shanghai Astronomical Observatory has carried out theoretical analysis and relative research on pulsed microwave hydrogen maser based on conventional passive hydrogen clock.Circuit is designed to generate two coherent pulses.The pulses simulating two coherent microwave fields can successively stimulate hydrogen atomic transition to induce Ramsey interference.It could compress the line width of atomic transition spectrum so as to improve the stability performance of hydrog... |
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| Keywords: | hydrogen maser pulsed microwave sweep circuit Ramsey interference line width |
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