%A HUANG Kai-Kai, ZHANG Jian-Wei, YU De-Shui, CHEN Zhen-Hui, ZHUAN Wei, CHEN Jing-Biao %T Application of Electron-Shelving Detection via 423 nm Transition in Calcium-Beam Optical Frequency Standard %0 Journal Article %D 2006 %J Chin. Phys. Lett. %R %P 3198-3201%V 23 %N 12 %U {https://cpl.iphy.ac.cn/CN/abstract/article_33218.shtml} %8 2006-12-01 %X A new scheme of small compact optical frequency standard based on thermal calcium beam with application of 423 nm shelving detection and sharp-angle velocity selection detection is proposed. Combining these presented techniques, we conclude that a small compact optical frequency standard based on thermal calcium beam will outperform the commercial caesium-beam microwave clock, like the 5071 Cs clock (from HP to Agilent, now Symmetricom company), both in accuracy and stability.