Abstract: We have observed electromagnetically induced transparency, deceleration and storage of an optical pulse in hot rubidium vapor by injection seeding using the laser sideband. In order to realize coherent manipulation of the rubidium atoms, the output of the master laser is locked on the F=1→F'=2 transition of the D1 line of 87Rb atoms, and phase modulated with an electro-optic modulator (EOM) with a frequency of 6.8 GHz to generate sidebands. The negative first sideband is injection seeded into a slave laser which frequency is then resonant with the F=2→F'=2 transition. The two output beams of the master and slaver lasers are two-photon resonant with the two hyperfine energy levels of the ground state of rubidium87, which can be used to coherently manipulate rubidium atoms. Using this method, we can not only obtain a frequency shift of 6.8 GHz, but also get high intensities of both frequencies. The two output beams of the master and slave lasers can be shined into a rubidium vapor cell, as the probe and coupling lights, respectively. Then we can observe electromagnetically induced transparency, deceleration and storage of an optical pulse, through manipulating the shape and the temporal sequence of the two lights.

Key words: injection locking