3D Photonic Nanostructures via Diffusion-Assisted Direct fs Laser Writing

Figure 5

Spiral photonic crystal structures. (a) An array of dielectric spirals. (b) An array of metalized spirals. (c) Detail of a spiral with lateral resolution is in the order of 100 nm. (d) The diffraction pattern generated when the structure is illuminated with white light.

(a)

(b)

(c)

(d)