| Title | Miniaturized calcium beam optical frequency standard using fully-sealed vacuum tube with 10(-15) instability |
| Authors | Shang, Haosen Zhang, Xiaogang Zhang, Shengnan Pan, Duo Chen, Haijun Chen, Jingbiao |
| Affiliation | Peking Univ, Sch Elect Engn & Comp Sci, State Key Lab Adv Opt Commun Syst & Network, Beijing 100871, Peoples R China. Beijing Vacuum Elect Res Inst, Nat Key Lab Sci & Technol Vacuum Elect, Beijing 100015, Peoples R China. |
| Keywords | LATTICE CLOCK ATOMIC CLOCK LASER TRANSITION NOISE |
| Issue Date | 2017 |
| Publisher | OPTICS EXPRESS |
| Citation | OPTICS EXPRESS. 2017, 25(24), 30459-30467. |
| Abstract | We implement a miniaturized calcium beam optical frequency standard using specially-designed fully-sealed vacuum tube, and realize the comparison with another calcium beam optical clock whose vacuum tube is sealed by flanges. The electron shelving detection method is adopted to improve the signal-to-noise ratio of the clock transition spectroscopy, and the readout laser is locked by modulation-free frequency locking technology based on Doppler effect. Injection locking is carried out to boost the power of the 657 nm master clock transition laser, thus ensuring the comparison. The fractional instability of the miniaturized calcium beam optical frequency standard using fully-sealed vacuum tube is 1.8 X 10(-15) after 1600 s of averaging. Total volume of the system except for electronics is about 0.3 m(3). To our knowledge, it's the first time to realize the optical frequency standard using fully- sealed vacuum tube. This work will promote the miniaturization and transportability of the optical clock based on atomic beam. (C) 2017 Optical Society of America |
| URI | http://hdl.handle.net/20.500.11897/500775 |
| ISSN | 1094-4087 |
| DOI | 10.1364/OE.25.030459 |
| Indexed | SCI(E) EI |
| Appears in Collections: | 信息科学技术学院 区域光纤通信网与新型光通信系统国家重点实验室 |
