Dispersion-free pulse propagation in a negative-index material.
The possibility of controlling the spectral position of the zero group-velocity dispersion point of a negative-index material can be exploited by varying the ratio between the electric and the magnetic plasma frequency to obtain dispersion-free propagation in spectral regions otherwise inaccessible using conventional positive-index materials. Our predictions are confirmed by pulse propagation simulations where all the orders of the complex dispersion of the material are taken into account.
D'Aguanno
Giuseppe
G
Time Domain Corporation, Cummings Research Park, 7057 Old Madison Pike, Huntsville, Alabama 35806, USA. giuseppe.daguanno@timedomain.com
Akozbek
Neset
N
Mattiucci
Nadia
N
Scalora
Michael
M
Bloemer
Mark J
MJ
Zheltikov
Aleksei M
AM