References

Structures

Refractive index

Direction of pump

4

Paired nanorods

−0.3

Perpendicular

21

Nano-fishnet with circular rods

−2

Perpendicular

7

Nano-fishnet with rectangular rods

−1

Perpendicular

26

Metal-dielectric-metal

−1.05

Perpendicular

Our Design

Split ring resonators

−3.8

Horizontally