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

fYear

2012

fDate

23-27 April 2012

Firstpage

182

Lastpage

185

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;

fLanguage

English

Publisher

ieee

Conference_Titel

European Frequency and Time Forum (EFTF), 2012

Conference_Location

Gothenburg

Print_ISBN

978-1-4673-1924-9

Type

conf

DOI

10.1109/EFTF.2012.6502363

Filename

6502363