Femtosecond surface plasmon pulse propagation.
We analyze ultrafast surface plasmon-polariton pulse reshaping effects and nonlinear propagation modes for metal/dielectric plasmon waveguides. It is found that group velocity and loss dispersion effects can substantially modify both pulse duration (broadening/narrowing) and intensity decay (acceleration/retardation) by as much as several tens of percentage points in the short-pulse regime and that metallic nonlinearities alone may support soliton, self-focusing, and self-compressing modes.
Optoelectronics Research Centre, University of Southampton, Highfield, Southampton SO17 1BJ, UK. zls@orc.soton.ac.uk
Zsolt L
ZL
Sámson
Peter
P
Horak
Kevin F
KF
MacDonald
Nikolay I
NI
Zheludev