Ling Li, Bi Gang
Opt Lett. 2014 Jun 1;39(11):3324-7. doi: 10.1364/OL.39.003324.
We demonstrate a Faraday anomalous dispersion optical filter (FADOF) operating on 5S(1/2)-6P(3/2) transition at 420 nm with a 5 cm long cell of 96.5% enriched 87Rb and measure the transmission as a function of the magnetic field and temperature. The isotope 87Rb FADOF achieves a peak transmission of 98% with a bandwidth of 2.5 GHz when the temperature of the isotope 87Rb cell is 280°C and the magnetic field is 500 G. The corresponding equivalent noise bandwidth is 5.9 GHz. The isotope 87Rb FADOF is applied to submarine communications, is used as the laser frequency stabilization for some atomic lines, and is also used as the pump laser in four-level Rb active optical clock.
我们展示了一种法拉第反常色散光学滤波器（FADOF），它在420纳米的5S(1/2)-6P(3/2)跃迁上运行，使用一个5厘米长、富集度为96.5%的87Rb气室，并测量了透过率随磁场和温度的变化。当87Rb气室温度为280°C且磁场为500 G时，87Rb同位素FADOF实现了98%的峰值透过率，带宽为2.5 GHz。相应的等效噪声带宽为5.9 GHz。87Rb同位素FADOF应用于潜艇通信，用作某些原子谱线的激光频率稳定器，还用作四能级Rb有源光钟中的泵浦激光器。
