Archive: May 3, 2023


The Journal of Applied physics letters published a paper entitled as “Laser frequency stabilizations using electromagnetically induced transparency”

Abstract-We present two techniques to lock a laser frequency on an atomic transition line by using an electromagnetically induced transparency ~EIT! signals, which give optical and electric feedback. We employed these methods to the D2 line of 87Rb atoms. Spectral characteristics of sub-natural linewidth EIT allow us to improve frequency stability. By optical feedback of EIT signals, we were able to obtain locking bandwidths of 12 MHz, while frequency stability was 5*10^(-13) at best after 100 s of integration using a frequency modulation technique.