References

Structures

Refractive index

Wavelength

Direction of pump

[1]

Paired nanorods

−0.3

1.5 µm

Perpendicular

[23]

Nano-fishnet with circular rods

−2

2.0 µm

Perpendicular

[4]

Nano-fishnet with rectangular rods

−1

1.4 µm

Perpendicular

[24]

Metal-dielectric-metal

−1.05

780 nm

Perpendicular

[25]

Multishell nanowires

−2.0

690 nm

Perpendicular

Our design [26]

Cascaded split ring resonators

−2.8

1.5 µm

Horizontally