Digitale Medien
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
77 (1995), S. 1696-1700
ISSN:
1089-7550
Quelle:
AIP Digital Archive
Thema:
Physik
Notizen:
The dielectric response of a random mixture of coated cylinders, of nonlinear cores and linear shells, is studied. It is shown that under conditions of partial resonance the system behaves as a mixture of nonlinear solid cylinders of radii equal to, or larger than, these of the original coated cylinders. The electric field in those effective cylinders is larger than that obtained in a mixture of the equivalent solid cylinders. These two effects facilitate the emergence of an enhanced nonlinear response in a composite containing very small quantities of nonlinear material. Also examined is the phenomenon of intrinsic optical bistability when the core component has quadratic or cubic nonlinearity. It is shown that bistability can, in principle, be achieved even when not in the close vicinity of a sharp plasmon resonance, as is the case for nonpartially resonant systems; however, the threshold intensities required for bistable behavior are much higher than in some three-component microgeometries previously discussed. © 1995 American Institute of Physics.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.358860
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