高热稳定性高精细度光学法布里-珀罗腔系统  

Optical Fabry-Pérot Cavity System with High Thermal Stability and High Finesse

作　　者：王兴昌[1] 李少康[1] 李刚[1] 张天才[1] 

机构地区：[1]山西大学光电研究所量子光学与光量子器件国家重点实验室极端光学协同创新中心,山西太原030006

出　　处：《光学学报》2017年第1期168-172,共5页Acta Optica Sinica

基　　金：国家973计划(2012CB921601);国家自然科学基金(61275210;61227902;91336107)

摘　　要：设计了由超低膨胀玻璃材料制作的光学法布里-珀罗(F-P)腔及其真空控温系统,通过双重控温系统实现了F-P腔在环境温度为10~40℃范围的精确控制,该系统在24h内的温度波动约为±0.004℃。通过分析F-P腔的共振频率和铯原子饱和吸收谱,获得了F-P腔的共振频率和腔体材料膨胀系数随温度的变化。通过对测得的数据进行拟合,可以精确确定零膨胀温度为29.286±0.057℃。所提出的温度控制系统有望获得热稳定度为3.494×10^(-14)的光学频率标准。An optical Fabry-Pérot cavity composed of ultra-low expansion glass material and a vacuum temperature control system are designed.The temperature of the Fabry-Pérot cavity can be precisely tuned from 10 ℃ to 40 ℃when we use the double temperature control system,and the temperature fluctuation of the system is within±0.004 ℃in 24 h.The variations in resonant frequency of the F-P cavity and expansion coefficient of the cavity material with temperature are measured when we analyze the F-P cavity resonant frequency and the saturated absorption spectrum of Cs atom.The zero expansion temperature（29.286±0.057 ℃）is determined accurately when we fit the measured data.An optical frequency standard with thermal stability of 3.494×10^-14 is expected to obtained by the proposed temperature control system.

关 键 词：测量 法布里-珀罗腔 饱和吸收光谱 热膨胀 

分 类 号：O562[理学—原子与分子物理]