We propose a scheme that provides large controllable delays for broadband optical pulses.
The system is based on the steep dispersion of a coherently driven medium, in which the
narrow electromagnetically induced transparency (EIT) band is overcome by using spatial
and temporal processing.

… Pulse generation … We propose a scheme that provides controllable large delays for
broadband optical pulses based on steep dispersion of coherently driven medium in which
the narrow EIT band is overcame by using spatial and temporal processing. © 2005 Optical
Society of America …