1998/10/12 by Zhilin Hu, Xizhi Zeng
Physics and Astronomy · #Atomic and Subatomic Physics Research #Quantum optics and atomic interactions #Cold Atom Physics and Bose-Einstein Condensates
paper · doi:10.1063/1.122380
An atomic optical filter with ultranarrow bandwidth has been developed. This filter has two operating channels generated from two hyperfine energy levels in the Cs ground state with a 9.2 GHz frequency separation. By employing a cw Ti:sapphire laser to alternatively pump the polarized Cs atoms to a selected hyperfine energy level, each of the two channels can be, respectively, used as emitting and receiving terminals. Compared to a normal Faraday anomalous dispersion optical filter, there is an increase in transmittance and a decrease in total equivalent bandwidth in this filter.