We investigate theoretically the phenomenon of so-called fast light in an unconventional regime, using pulses sufficiently short that relaxation effects in a gain medium can be ignored completely. We show that previously recognized gain instabilities, including superfluorescence, can be tolerated in achieving a pulse peak advance of more than one full peak width.
© 2007 Optical Society of America
Original Manuscript: August 30, 2006
Manuscript Accepted: November 7, 2006
Published: March 15, 2007
B. D. Clader and J. H. Eberly, "Theoretical study of fast light with short sech pulses in coherent gain media," J. Opt. Soc. Am. B 24, 916-921 (2007)