Study of the optimal duty cycle and pumping rate for square-wave amplitude-modulated Bell-Bloom magnetometers

doi:10.1088/1674-1056/25/6/060701

	Study of the optimal duty cycle and pumping rate for square-wave amplitude-modulated Bell-Bloom magnetometers
	Wang, Mei-Ling 1,2; Wang, Meng-Bing 1,2; Zhang, Gui-Ying 1,2; Zhao, Kai-Feng 1,2
刊名	CHINESE PHYSICS B
	2016-06-01
卷号	25 页码:6
关键词	optical pumping spin relaxation power-broadening magnetometry
ISSN号	1674-1056
DOI	10.1088/1674-1056/25/6/060701
英文摘要	We theoretically and experimentally study the optimal duty cycle and pumping rate for square-wave amplitude-modulated Bell-Bloom magnetometers. The theoretical and the experimental results are in good agreement for duty cycles and corresponding pumping rates ranging over 2 orders of magnitude. Our study gives the maximum field response as a function of duty cycle and pumping rate. Especially, for a fixed duty cycle, the maximum field response is obtained when the time averaged pumping rate, which is the product of pumping rate and duty cycle, is equal to the transverse relaxation rate in the dark. By using a combination of small duty cycle and large pumping rate, one can increase the maximum field response by up to a factor of 2 or pi/2, relative to that of the sinusoidal modulation or the 50% duty cycle square-wave modulation respectively. We further show that the same pumping condition is also practically optimal for the sensitivity due to the fact that the signal at resonance is insensitive to the fluctuations of pumping rate and duty cycle.
资助项目	National Natural Science Foundation of China[11074050]
WOS关键词	RELAXATION ; LIGHT
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000377876400012
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/42838]
专题	中国科学院近代物理研究所
通讯作者	Zhao, Kai-Feng
作者单位	1.Fudan Univ, Appl Ion Beam Phys Lab, Key Lab, Minist Educ, Shanghai 200433, Peoples R China 2.Fudan Univ, Inst Modern Phys, Dept Nucl Sci & Technol, Shanghai 200433, Peoples R China
推荐引用方式 GB/T 7714	Wang, Mei-Ling,Wang, Meng-Bing,Zhang, Gui-Ying,et al. Study of the optimal duty cycle and pumping rate for square-wave amplitude-modulated Bell-Bloom magnetometers[J]. CHINESE PHYSICS B,2016,25:6.
APA	Wang, Mei-Ling,Wang, Meng-Bing,Zhang, Gui-Ying,&Zhao, Kai-Feng.(2016).Study of the optimal duty cycle and pumping rate for square-wave amplitude-modulated Bell-Bloom magnetometers.CHINESE PHYSICS B,25,6.
MLA	Wang, Mei-Ling,et al."Study of the optimal duty cycle and pumping rate for square-wave amplitude-modulated Bell-Bloom magnetometers".CHINESE PHYSICS B 25(2016):6.