Near field focusing by edge diffraction: publisher's note.

This publisher's note corrects an error in the reference section of Opt. Lett.43, 4053 (2018)OPLEDP0146-959210.

Near field focusing by edge diffraction.

Spherical microparticles have the ability for nonresonant focusing of light in the near field zone, forming nanojet (NJ) beams. Arbitrary-shaped microstructures, with wavelength-scale dimensions, may offer similar functionality with lower fabrication complexity. The focusing properties are ruled by the edge diffraction phenomenon.