Title :
Design of an optical reference cavity with flexible thermal expansion tuning properties
Author :
Yingxin Luo ; Jie Zhang ; Bing Ouyang ; Ke Deng ; Zehuang Lu ; Jun Luo
Author_Institution :
MOE Key Lab. of Fundamental Quantities Meas., Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
An ultra-stable optical cavity is designed as the frequency reference of a clock laser for an Al+ optical clock by finite element analysis (FEA). The cavity has a structure with fused silica (FS) mirrors contacted to FS rings and re-entrant inside the ULE spacer. This design yields a low thermal noise limit and a flexible tuning range of the total coefficient of thermal expansion (CTE) which is suitable for applications with ULE materials that have various zero-crossing temperatures of CTE from 5 °C to 35 °C, and for applications for cavities with various dimensions and configurations.
Keywords :
clocks; finite element analysis; laser mirrors; thermal expansion; FEA; FS mirrors; FS rings; TILE spacer; clock laser; coefficient of thermal expansion; finite element analysis; flexible thermal expansion tuning properties; frequency reference; fused silica mirrors; optical clock; optical reference cavity design; temperature 5 degC to 35 degC; thermal noise; ultra-stable optical cavity; zero-crossing temperatures;
Conference_Titel :
European Frequency and Time Forum (EFTF), 2012
Conference_Location :
Gothenburg
Print_ISBN :
978-1-4673-1924-9
DOI :
10.1109/EFTF.2012.6502363
