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We report experimental investigationd of optical pulse group velocityreduction and probe pulse regeneration using a Raman scheme. The new schemewhich does not rely on the on-one-photon resonance electromagnetically inducedtransparency (EIT), has many advantages over the conventional method whichcritically relys on the transparency window created by an EIT process. Wedemonstrate significant reduction of group velocity, less probe field loss,reduced probe pulse distortion, and high probe pulse regeneration efficiency.Comment: Submitted to Phys. Rev. Lett. on December 21, 2001 (To replace the  original submital in which equations were not ip-loaded properly

Steep optical-wave group-velocity reduction and “storage” of light without on-resonance electromagnetically induced transparency