The filtering behavior of cesium Faraday optical filter

Xiaoling Jia, Zhifeng Zhang

L. S. Alvarez, Thomas M. Shay

Yundong Zhang, Xiaoling Jia, Zuguang Ma +1 more

庄伟, 洪叶龙, 高智文 +2 more

Hangbo Shi, Xiaolei Guan, Zhiyang Wang +5 more

SummaryWe achieve the stabilization of the laser power using a cesium Faraday anomalous dispersion optical filter (FADOF). We measured the transmission spectrum of the FADOF. In the transition line of 6s2S1/2F=4→6p2P3/2for cesium at the wavelength of 852 nm, when the laser frequency is constant, the transmission of FADOF increases rapidly and then decreases as the probe laser intensity increases. The negative correlation between FADOF transmission and laser intensity can be used to stabilize the laser power. Therefore, we tune the laser frequency to the cesium 6s2S1/2F=4→6p2P3/2transition line, then the power of the laser passing through the FADOF is expected to be stabilized. This work can be applied to the precision measurement field, such as atomic clocks, atomic gravimeters, atomic magnetometers, etc.

Junyu Xiong, Longfei Yin, Hong Mei Guo +1 more

We report a cesium Faraday anomalous dispersion optical filter (FADOF), of which the atom vapor cell is filled with argon as buffer gas. The result shows that, with the help of buffer gas, the sidebands of the FADOF are removed and a transmittance spectrum with one single peak is realized.