Metrological traceability method for atomic absolute gravimeters

Dong Zhu; Yin Zhou; Bin Wu; Kanxing Weng; Kainan Wang; Bing Cheng; Bing Cheng; Qiang Lin; Qiang Lin

doi:10.1364/AO.430370

Applied Optics
Vol. 60,
Issue 26,
pp. 7910-7920
(2021)
•https://doi.org/10.1364/AO.430370

Metrological traceability method for atomic absolute gravimeters

Dong Zhu, Yin Zhou, Bin Wu, Kanxing Weng, Kainan Wang, Bing Cheng, and Qiang Lin

Not Accessible

Your library or personal account may give you access

Get PDF
Email
Share
Get Citation
Copy Citation Text
Dong Zhu, Yin Zhou, Bin Wu, Kanxing Weng, Kainan Wang, Bing Cheng, and Qiang Lin, "Metrological traceability method for atomic absolute gravimeters," Appl. Opt. 60, 7910-7920 (2021)

Export Citation
- BibTex
- Endnote (RIS)
- HTML
- Plain Text
Citation alert
Save article

Check for updates

Abstract

Cold atomic gravimeters are attracting more and more attention and activity in the area of gravity measurement and comparison, and the corresponding methods for measurement and traceability need to be explored. Based on two self-developed cold atomic gravimeters, research on the comparison and traceability methods of absolute gravity measurement was carried out. The entire gravity measurement traceability process is divided into two stages: the preliminary traceability in the laboratory and the formal traceability in the absolute gravity reference station. Through comparison of two atomic gravimeters (ZAG-E and ZAG-B) in the laboratory, the degree of equivalence ${D_D}$ and the normalized deviation ${E_n}$ of ZAG-E are obtained, which are ${-}{2.7}\;{\pm}\;{7.6}\;\unicode{x00B5} {\rm Gal}$ ($k = {2}$) and ${-}{0.3599}$, respectively. Relative to the absolute gravity reference at the National Institute of Metrology (NIM) in China, ${D_D}$ and ${E_n}$ of ZAG-E are ${0.5}\;{\pm}\;{12.0}\;\unicode{x00B5} {\rm Gal}$ ($k = {2}$) and 0.0417, respectively. $|{E_n}|\; \le \;{1}$ in the two traceability stages, so the results of two traceability stages are acceptable, which indicates the consistency of the comparisons is good. Finally, the absolute gravity measurement value of ZAG-E is traced to the SI units, ensuring its accuracy. A gravity traceability method for atomic gravimeters is given and is very beneficial for the applications of atomic gravimeters in metrology and other fields.

Full Article | PDF Article

More Like This

Dependence of the sensitivity on the orientation for a free-fall atom gravimeter

Bin Wu, Dong Zhu, Bing Cheng, Liming Wu, Kainan Wang, Zhaoying Wang, Qing Shu, Rui Li, Helin Wang, Xiaolong Wang, and Qiang Lin
Opt. Express 27(8) 11252-11263 (2019)

Estimation of the effective wavenumber for a collimated beam in an interferometer, case study for FG5/X absolute gravimeters

Petr Křen and Vojtech Pálinkáš
Appl. Opt. 61(7) 1811-1817 (2022)

Heng Zhang, Xudong Ren, Wenhua Yan, Yuan Cheng, Hang Zhou, Zhi Gao, Qin Luo, Minkang Zhou, and Zhongkun Hu
Opt. Express 29(19) 30007-30019 (2021)

Previous Article Next Article

Data Availability

Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (4)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (9)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

	ZAG-B	ZAG-E
Date	(µGal)	(µGal)
2019/02/18	2.4	1.9
2019/02/19	2.7	1.9
2019/02/20	—	2.3
2019/02/21	3.1	2.4
2019/02/22	2.8	2.4
2019/02/23	2.7	2.2

	$σ_{g} / µ G a l / {H z}^{- 1 / 2}$		Percentage (%)
Noise Source	ZAG-E	ZAG-B	ZAG-E	ZAG-B
Raman laser phase	82.5	93.3	31.9	36.4
Detection	85.8	108.1	34.1	31.4
Vibration	72.4	72.4	28.8	24.3
Estimated total noise	240.7	273.8	94.9	92.1
Observed noise	251.3	297.4	100	100

Systematic	ZAG-B		ZAG-E
Effects	Correction (µGal)	Uncertainty (µGal)	Correction (µGal)	Uncertainty (µGal)
Clock reference frequency	–54.3	2.0	0.0	2.0
Laser frequency	–4.0	0.4	–5.5	1.1
Radio frequency phase shift	0.0	2.0	–51.8	2.8
Two-photon light shift	–45.7	7.0	–41.4	3.7
Coriolis force	–62.4	3.8	–52.2	4.2
Gravity gradient	–8.2	0.1	–8.2	0.1
Self-attraction	–3.0	0.1	–3.0	0.1
Wavefront distortion	0.0	3.9	0.0	3.9
Environmental factors	0.0	0.7	0.0	0.7
Total	–177.6	9.3	–162.1	7.8

			ZAG-E		ZAG-B
Date	$δ g_{P r e s s} / µ G a l$	$δ g_{P o l a r M} / µ G a l$	$δ g_{T i d e} / µ G a l$	$δ g_{T i l t} / µ G a l$	$δ g_{T i d e} / µ G a l$	$δ g_{T i l t} / µ G a l$
2/18	$1.2 \pm 0.2$	$4.3 \pm 0.1$	$1.2 \pm 0.6$	$0.1 \pm 0.1$	$1.1 \pm 0.6$	$1.1 \pm 0.1$
2/19	$3.6 \pm 0.2$	$4.3 \pm 0.1$	$23.7 \pm 0.6$	$0.1 \pm 0.1$	$23.9 \pm 0.6$	$0.1 \pm 0.1$
2/20	$4.5 \pm 0.2$	$4.4 \pm 0.1$	$27.2 \pm 0.6$	$0.5 \pm 0.1$	–	–
2/21	$3.3 \pm 0.2$	$4.4 \pm 0.1$	$31.6 \pm 0.6$	$0.2 \pm 0.1$	$32.0 \pm 0.6$	$0.1 \pm 0.1$
2/22	$4.2 \pm 0.2$	$4.4 \pm 0.1$	$15.2 \pm 0.6$	$0.3 \pm 0.1$	$14.9 \pm 0.6$	$0.5 \pm 0.1$
2/23	$3.6 \pm 0.2$	$4.4 \pm 0.1$	$- 3.5 \pm 0.6$	$0.0 \pm 0.1$	$- 3.4 \pm 0.6$	$0.4 \pm 0.1$

	ZAG-B	ZAG-E
Date	(µGal)	(µGal)
2019/02/18	2.4	1.9
2019/02/19	2.7	1.9
2019/02/20	—	2.3
2019/02/21	3.1	2.4
2019/02/22	2.8	2.4
2019/02/23	2.7	2.2

Abstract

Data Availability

Cited By

Figures (8)

Tables (4)

Equations (9)

Applied Optics