NTSC-IR
Interrogation of spin polarized clock transition in strontium optical lattice clock
Guo Yang1,2; Yin Mo-Juan1; Xu Qin-Fang1; Wang Ye-Bing1,2; Lu Ben-Quan1,2; Ren Jie1; Zhao Fang-Jing1,2; Chang Hong1
2018-04-05
Source PublicationACTA PHYSICA SINICA
ISSN1000-3290
Volume67Issue:7Pages:8
AbstractWe demonstrate a spin-polarized clock transition spectrum of the Sr-87 optical lattice clock. The clock transition 5s(2) S-1(0) -> 5s5p P-3(0) of isotope Sr-87 has a hyperfine structure due to non-zero nuclear spin, inducing ten pi-polarized transitions from each individual m(F) state under the condition of a bias magnetic field along the probing polarization axis. In this experiment, atoms are driven to a certain m (F) state by a circular-polarization pump light to maximize the atomic population, which is beneficial to the stability and uncertainty evaluation of the optical lattice clock. After two stages: cooling and trapping, about 3. 5 x 10(6) atoms are trapped in the red magneto-optical trap with a temperature of 3.9 mu K. A grating-feedback external cavity diode laser with a tapered amplifier is used to build the optical lattice with a "magic-wavelength" of 813.426 nm. Both waists of the counter-propagating lattice beam along the horizontal direction are overlapped to form a one-dimensional optical lattice. The lifetime of the atoms trapped in the 1 D optical lattice is 1600 ms. The clock laser at 698 nm is a grating-feedback diode laser, which is locked to an ultra-low expansion cavity by the Pound-Drever-Hall technique to stabilize the frequency and phase. As a result, the linewidth of clock laser is narrowed to Hz level. By the normalized shelving method, we obtain a resolved sideband spectrum of Sr-87 5s(2) S-1(0) -> 5s5p P-3(0) transition. According to the spectrum, the lattice temperature along the longitudinal direction is approximately 4.2 mu K. After that a linewidth of 6.7 Hz of the degenerate clock transition is obtained at a probing time of 150 ms by utilizing a three-dimensional (3 D) bias magnetic field, which is used to eliminate the stray magnetic fields. Then a small bias magnetic field of 300 mGs is applied along the polarization axis of the lattice light to achieve the spectrum of Zeeman magnetic sublevels of the clock transition. Furthermore, the m(F) = +9/2 and m(F) = -9/2 magnetic sublevels are picked to be respectively pumped by the sigma(+)-polarized and sigma(-)-polarized light at 689 nm, a variable liquid crystal wave plate is employed to switch on both polarizations. Finally, the spin polarized clock transition spectrum is obtained at the interrogating pulse of 150 ms, and the linewidths of the m(F) = +9/2, m(F) = -9/2 magnetic sublevel transitions are 6.8 Hz and 6.2 Hz respectively.
Keywordstrontium optical lattice clock observation of clock transition the spin-polarized spectrum
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; key research project of frontier science of the Chinese Academy of Sciences ; key research project of frontier science of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; key research project of frontier science of the Chinese Academy of Sciences ; key research project of frontier science of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; key research project of frontier science of the Chinese Academy of Sciences ; key research project of frontier science of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; key research project of frontier science of the Chinese Academy of Sciences ; key research project of frontier science of the Chinese Academy of Sciences
DOI10.7498/aps.67.20172759
Language英语
Funding ProjectNational Natural Science Foundation of China[11474282] ; National Natural Science Foundation of China[61775220] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB21030700] ; key research project of frontier science of the Chinese Academy of Sciences[QYZDB-SSW-JSC004]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; key research project of frontier science of the Chinese Academy of Sciences ; key research project of frontier science of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; key research project of frontier science of the Chinese Academy of Sciences ; key research project of frontier science of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; key research project of frontier science of the Chinese Academy of Sciences ; key research project of frontier science of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; key research project of frontier science of the Chinese Academy of Sciences ; key research project of frontier science of the Chinese Academy of Sciences
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000443194200009
PublisherCHINESE PHYSICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://210.72.145.45/handle/361003/11653
Collection中国科学院国家授时中心
Corresponding AuthorChang Hong
Affiliation1.Chinese Acad Sci, Key Lab Time & Frequency Primary Stand, Natl Time Serv Ctr, Xian 710600, Shaanxi, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Guo Yang,Yin Mo-Juan,Xu Qin-Fang,et al. Interrogation of spin polarized clock transition in strontium optical lattice clock[J]. ACTA PHYSICA SINICA,2018,67(7):8.
APA Guo Yang.,Yin Mo-Juan.,Xu Qin-Fang.,Wang Ye-Bing.,Lu Ben-Quan.,...&Chang Hong.(2018).Interrogation of spin polarized clock transition in strontium optical lattice clock.ACTA PHYSICA SINICA,67(7),8.
MLA Guo Yang,et al."Interrogation of spin polarized clock transition in strontium optical lattice clock".ACTA PHYSICA SINICA 67.7(2018):8.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Guo Yang]'s Articles
[Yin Mo-Juan]'s Articles
[Xu Qin-Fang]'s Articles
Baidu academic
Similar articles in Baidu academic
[Guo Yang]'s Articles
[Yin Mo-Juan]'s Articles
[Xu Qin-Fang]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Guo Yang]'s Articles
[Yin Mo-Juan]'s Articles
[Xu Qin-Fang]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.