Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Jianhui Tu"'
Publikováno v:
2019 IEEE 7th International Conference on Bioinformatics and Computational Biology ( ICBCB).
This paper proposes a novel combined method to improve micro-calcification clusters (MCs) detection accuracy in mammograms. The presented method includes three main steps: firstly, exponentiation operation and a new improved successive mean quantizat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5fd1c3f8822e5a4f0d6065e8c3af21e4
https://doi.org/10.1109/icbcb.2019.8854644
https://doi.org/10.1109/icbcb.2019.8854644
Publikováno v:
2018 IEEE International Frequency Control Symposium (IFCS).
We demonstrate an approach of cold-atom frequency standard based on the two-photon transition (TPT) in rubidium (Rb), using an Erbium-fiber-based Frequency Comb. By introducing the technique of laser cooling and atoms trapping, our scheme can elimina
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8b33a17ef3842c69416c3a3be4076b3
https://doi.org/10.1109/fcs.2018.8597467
https://doi.org/10.1109/fcs.2018.8597467
Autor:
Xiaolin Sun, Jianhui Tu, Pengfei Cheng, Jingzhong Cui, Jianwei Zhang, L. J. Wang, Zhaoquan Wang
Publikováno v:
2018 IEEE International Frequency Control Symposium (IFCS).
The Dick effect is one of the main limits for most atomic clock operated in a pulsed mode. Analysis and evaluations of the Dick effect are thoroughly discussed in different schemes of atomic clocks. Applying better local oscillators with lower phase
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f83d57f1d749c2feee94778a2f78575
https://doi.org/10.1109/fcs.2018.8597480
https://doi.org/10.1109/fcs.2018.8597480
Autor:
Shengnan, Zhang, Xiaogang, Zhang, Jingzhong, Cui, Zhaojie, Jiang, Haosen, Shang, Chuanwen, Zhu, Pengyuan, Chang, Ling, Zhang, Jianhui, Tu, Jingbiao, Chen
Publikováno v:
The Review of scientific instruments. 88(10)
We achieved a low-cost and small-sized Rb optical frequency standard based on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::dc5eb98e4c7d4320e6f73fbfedbde2bd
https://pubmed.ncbi.nlm.nih.gov/29092459
https://pubmed.ncbi.nlm.nih.gov/29092459
Autor:
Shengnan Zhang, Zhaojie Jiang, Xiaogang Zhang, Pengyuan Chang, Haosen Shang, Jingbiao Chen, Jianhui Tu, Shiyu Yang, Lian Jiqing
Publikováno v:
2017 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFC).
Partly subjected to the stability of optical frequency source, the magnetic dipole and electric quadrupole hyperfine constants of the 85Rb 6P 3/2 State have been reported to be 8.163(4) MHz and 8.191(27) MHz, respectively. To pursue the higher precis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d35b89f86896f83d70794278be1d12a7
https://doi.org/10.1109/fcs.2017.8089025
https://doi.org/10.1109/fcs.2017.8089025
Publikováno v:
IOP Conference Series: Materials Science and Engineering. 685:012020
As one of the important factors affecting the long-term frequency stability of Rubidium atomic frequency standards (RAFS), the temperature coefficient has a great influence on the performance of RAFS. The temperature coefficient of physics package ha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::009f15412684768954d7e481badf54a2
https://doi.org/10.1088/1757-899x/685/1/012020
https://doi.org/10.1088/1757-899x/685/1/012020
Autor:
Ling Zhang, Haosen Shang, Shengnan Zhang, Chuanwen Zhu, Cui Jingzhong, Zhaojie Jiang, Jianhui Tu, Xiaogang Zhang, Pengyuan Chang, Jingbiao Chen
Publikováno v:
Review of Scientific Instruments. 88:103106
We achieved a low-cost and small-sized Rb optical frequency standard based on 85Rb 5S1/2 → 6P3/2 transition with 10−15 stability, which is comparable with that of the best 532 nm I2 optical frequency standards. In this system, we directly lock th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::123e79dc57b1084e6ea2928017c05a97
https://doi.org/10.1063/1.5006962
https://doi.org/10.1063/1.5006962
Publikováno v:
2014 IEEE International Frequency Control Symposium (FCS).
An improved magnetron cavity applied in vapor-cell rubidium frequency standards is presented. The cavity is newly developed accommodating a glass cell with an increased diameter of 25mm. Numerical simulation indicates that the proposed magnetron cavi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ae6af88751f363d952a7f9771252234
https://doi.org/10.1109/fcs.2014.6859881
https://doi.org/10.1109/fcs.2014.6859881
Autor:
Shengnan Zhang, Xiaogang Zhang, Jingzhong Cui, Zhaojie Jiang, Haosen Shang, Chuanwen Zhu, Pengyuan Chang, Ling Zhang, Jianhui Tu, Jingbiao Chen
Publikováno v:
Review of Scientific Instruments; 2017, Vol. 88 Issue 10, p103106-1-103106-5, 5p, 1 Diagram, 5 Graphs
Publikováno v:
Physics Procedia; Aug2011, Vol. 18, p73-76, 4p