Superluminal propagation of an optical pulse in a Doppler broadened three-state, single channel active Raman gain medium

K. J. Jiang, L. Deng, M. G. Payne

Using a single channel active Raman gain medium we show a $(220\pm 20)$ns advance time for an optical pulse of ${\tau }_{FWHM}=15.4\mu$s propagating through a 10 cm medium, a lead time th…