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Electrically tunable photonic crystals with nonlinear composite materials
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) Schematic view of one-dimensional PCs composed of (a) a nonlinear composite microstructure and linear common dielectric medium, e.g., air and (b) a nonlinear composite material subjected to the application of spatially periodic nonzero (indicated by the symbols, + and −) and zero pump electric fields. The composites in both cases can be prepared with nonlinear nanoparticles (e.g., gold) randomly dispersed in linear dielectric (e.g., silica), as shown in the middle panel.

Image of FIG. 2.
FIG. 2.

(Color online) Calculated photonic band structures of (a) /air, (b) /air under zero pump ac field, , (c) /air under nonzero pump ac field, , and (d) /air under nonzero pump ac field, , for a one-dimensional PC [Fig. 1(a)]. Parameters: . Here, is the lattice constant.

Image of FIG. 3.
FIG. 3.

The first band gap of a one-dimensional PC [Fig. 1(a)] composed of composite microstructures, as a function of the external pump ac electric field. Parameters: .

Image of FIG. 4.
FIG. 4.

(Color online) Photonic band structure of a one-dimensional PC [Fig. 1(b)] composed of a composite material under the application of spatially periodic pump ac electric field , for (a) (zero pump ac field) and (b) (nonzero pump ac field). Parameters: .


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Electrically tunable photonic crystals with nonlinear composite materials