Detuned slow light in the Doppler broadened multi-level D2 line of Rubidium.
We observed a detuned slow light phenomenon based on electromagnetically induced transparency in (87)Rb D2 line composed of multiple excited-hyperfine states within a Doppler-broadened linewidth. The results show that the maximum group delay of a probe occurs at off-detuned two-photon resonance frequency. The observed detuned group delay is analyzed with numerical calculations for a probe pulse interacting with the neighboring excited-states-modified Doppler broadening atoms for a fixed coupling field. The experimental results are in good agreement with the numerical calculations.
Chen
Yi
Y
Center for Photon Information Processing, Graduate School of Information and Telecommunications, Inha University, Nam-gu, Incheon, South Korea.
Wei
Xiao Gang
XG
Ham
Byoung S
BS