摘要
汞离子微波钟利用四极线型阱实现离子囚禁,通过汞光谱灯完成汞离子态的制备,易于集成和小型化;通过离子阱和汞光谱灯及其光路等关键组件优化设计,使汞光谱灯发出的抽运光与离子阱囚禁的离子充分作用,完成态的制备;40.5 GHz微波通过喇叭发射至离子阱中心,完成离子数反转;利用弱荧光信号探测系统完成汞离子超精细能级跃迁谱线的探测,实测跃迁谱线线宽约1 Hz;通过伺服控制环路完成汞离子微波钟的闭环锁定,经实验测试,频率稳定度可达4E-13/τ(1 s≤τ≤1000 s),7E-15/10000 s。
The mercury ion trapped microwave clock utilizes a quadrupole trap to achieve ion trapping,and completes the preparation of mercury ion states through a mercury lamp,making it easy to integrate and miniaturize.Through the optimization and design of key components such as ion trap,mercury lamp and its optical path,the pump light emitted by the mercury lamp can fully interact with the ions trapped in the ion trap to complete the preparation of states.40.5 GHz microwave is transmitted to the center of the ion trap through the horn antenna to complete the inversion of the ion number.The transiting line of the trapped mercury ions is detected by a weak fluorescence detection system and the measured transiting line width is about 1 Hz.The closed-loop locking of mercury ion microwave clock is achieved by the servo loop control system.After experiment testing,the frequency stability index can reach 4E-13/τ(1 s≤τ≤1000 s),7E-15/10000 s.
作者
王暖让
易航
薛潇博
张升康
WANG Nuan-rang;YI Hang;XUE Xiao-bo;ZHANG Sheng-kang(Science and Technology on Metrology and Calibration Laboratory,Beijing Institute of Radio Metrology&Measurement,Beijing 100039,China)
出处
《宇航计测技术》
CSCD
2023年第5期31-35,共5页
Journal of Astronautic Metrology and Measurement
关键词
汞离子微波钟
离子阱
汞光谱灯
Mercury ion trapped microwave frequency standard
Ion trap
Mercury lamp
