High-performance coherent population trapping atomic clock with direct-modulation distributed Bragg reflector laser

doi:10.1088/1681-7575/abffde

	High-performance coherent population trapping atomic clock with direct-modulation distributed Bragg reflector laser
	Yun, Peter 1; Li, Qinglin 1,2; Hao, Qiang 1; Liu, Guobin 1; de Clercq, Emeric 3; Guerandel, Stephane 3; Liu, Xiaochi 4; Gu, Sihong 5; Gao, Yuping 1; Zhang, Shougang 1
刊名	METROLOGIA
	2021-08-01
卷号	58 期号:4 页码:8
关键词	compact atomic clock coherent population trapping distributed Bragg reflector laser
ISSN号	0026-1394
DOI	10.1088/1681-7575/abffde
英文摘要	The coherent population trapping (CPT) atomic clock is very promising for use in next-generation spaceborne applications owing to its compactness and high performance. In this paper, we propose and implement a CPT atomic clock based on the direct modulation of a large-modulation-bandwidth and narrow-linewidth distributed Bragg reflector laser, which replaces the usually used external bulk modulator in high-performance CPT clocks. Our method retains the high performance while significantly reducing the clock size. Using this highly compact bichromatic light source and simplest CPT configuration, in which a circularly polarized bichromatic laser interrogates the Rb-87 atom system, a CPT signal of clock transition with a narrow linewidth and high contrast is observed. We then lock the local oscillator frequency to the CPT resonance and demonstrate an encouraging short-term frequency stability of 3.6 x 10(-13) tau (-1/2) (4 s <= tau <= 200 s). We attribute it to the ultralow laser frequency and intensity noise as well as to the high-quality-factor CPT signal. This study can pave the way for the development of compact high-performance CPT clocks based on our scheme.
资助项目	National Natural Science Foundation of China[U1731132]
WOS关键词	SPECTROSCOPY ; RESONANCES ; VAPOR ; LINE ; EXCITATION ; NOISE ; D-1
WOS研究方向	Instruments & Instrumentation ; Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000671676000001
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://210.72.145.45/handle/361003/10660]
专题	中国科学院国家授时中心
通讯作者	Yun, Peter
作者单位	1.Chinese Acad Sci, Natl Time Serv Ctr, Xian, Peoples R China 2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing, Peoples R China 3.Observ Paris, LNE SYRTE, Paris, France 4.Natl Inst Metrol, Beijing, Peoples R China 5.Chinese Acad Sci, Innovat Acad Precis Measurement Sci & Technol, Wuhan, Peoples R China
推荐引用方式 GB/T 7714	Yun, Peter,Li, Qinglin,Hao, Qiang,et al. High-performance coherent population trapping atomic clock with direct-modulation distributed Bragg reflector laser[J]. METROLOGIA,2021,58(4):8.
APA	Yun, Peter.,Li, Qinglin.,Hao, Qiang.,Liu, Guobin.,de Clercq, Emeric.,...&Zhang, Shougang.(2021).High-performance coherent population trapping atomic clock with direct-modulation distributed Bragg reflector laser.METROLOGIA,58(4),8.
MLA	Yun, Peter,et al."High-performance coherent population trapping atomic clock with direct-modulation distributed Bragg reflector laser".METROLOGIA 58.4(2021):8.