Slow light in Doppler-broadened two-level systems
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We show that the propagation of light in a Doppler-broadened medium can be slowed down considerably even though such medium exhibits very flat dispersion. The slowing down is achieved by the application of a saturating counter propagating beam that produces a hole in the inhomogeneous line shape. In atomic vapors, we calculate group indices of the order of [Formula Presented] The calculations include all coherence effects. 2003 The American Physical Society.