Spectral features of electromagnetically induced absorption in 85Rb atoms

摘要: We present theoretical and experimental studies of electromagnetically induced absorption (EIA) for the transition 85Rb-D2 line. From results calculated by solving time-dependent density-matrix equations including optical Zeeman coherences connected via three-photon interactions, EIA signals have ultra-narrow feature in low powers coupling beam both same- orthogonal-polarization configurations stationary thermal atoms. However, from high laser still remained state only same-polarization configuration The match well with except region considering linewidths two separate probe lasers.