Development of a Laser Frequency Stabilization and an Optical Transmission System for the Francium Electric Dipole Moment Search
Development of a Laser Frequency Stabilization and an Optical Transmission System for the Francium Electric Dipole Moment Search
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用于钫电偶极矩搜索的激光稳频和光传输系统的开发
DOI：
10.1088/1742-6596/2249/1/012010
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
A. Takamine and Y. Sakemi
中科院分区：
文献类型：
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作者：
K. Nakamura;S. Nagase;T. Nakashita;T. Hayamizu;T. Aoki;H. Nagahama;N. Ozawa;M. Sato;K. Yamane;M. Fukase;D. Uehara;A. Takamine and Y. Sakemi
我们研制了一套激光稳频和光纤传输系统，用于探测铥的电偶极矩。采用最先进的商业波长计的激光稳频方案的绝对精度在± 2nm和±200 nm处分别为0.48MHz和-1.33MHz，60小时内频率不稳定度低于10-9，标准偏差为0.56MHz。我们还证明，实验室之间铺设的400米长的光纤可以传输30毫瓦的捕获激光，这是足够的一个磁光捕获的！光纤中的偏振串扰在12小时的测量中稳定在-25dB。
We developed a laser frequency stabilization and an optical fiber transmission system for the the francium electric dipole moment search. The absolute accuracy of a laser frequency stabilization scheme using a state-of-the-art commercial wavelength meter was 0.48 MHz at±2 nm and-1.33 MHz at±200 nm from calibration wavelength, respectively, and the frequency instability is below 10-9 with a standard deviation of 0.56 MHz over 60 hours. We also demonstrated that a 400 m long fiber laid between laboratories can transmit 30 mW of trapping laser light, which is sufficient for a magneto-optical trapping of francium. The polarization crosstalk in the fiber was stable at-25 dB over 12 hours of measurement.