Abstract

A metafilm-based photodetector is presented that affords spatial sorting of photons of different wavelengths below the free-space diffraction limit and extraction of useful photocurrent. An optimization of the metafilm leads to near-unity absorption and chipscale, anti-Hermitian optical coupling between the metafilm elements facilitates a narrow spectral response (~ 30 nm) for the different wavelength channels.

© 2017 Optical Society of America