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We develop models for the propagation of intense pulses in solid state mediawhich can have either saturated absorption or exhibit reverse absorption . Weshow that the experiments of Bigelow {\it et al.}[Phys. Rev. Lett. {\bf 90},113903 (2003); Science {\bf 301}, 200 (2003).] on subluminal propagation inRuby and superluminal propagation in Alexandrite are well explained bymodelling them as three level and four level systems coupled to Maxwellequations. We present results well beyond the traditional pump-probe approach.Comment: 4 pages, 6 figure

Sub- and Superluminal Propagation of Intense Pulses in Media with Saturated and Reverse Absorption