Article Highlight: Subwavelength nanoimaging in 3-D

I just stumbled upon an interesting article published in Phys. Rev. Lett. by A. Govyadinov et al., entitled "Phaseless three-dimensional optical nanoimaging". Actually, the preprint is on arxiv.

The authors proposed a method in which the subwavelength details of a 3D structure can be recovered in the far-field. It is a very well-thought method which is based on the solution to the inverse scattering problem for a system consisting of a weakly-scattering dielectric sample and a strongly-scattering nano-particle tip. Interestingly, their nano-scale optical tomography technique relies neither on phase-measurements of the scattered field nor on phase-control of the illuminating field.