Anti-Hermitian photodetector facilitating efficient subwavelength photon sorting.

ABSTRACT: The ability to split an incident light beam into separate wavelength bands is central to a diverse set of optical applications, including imaging, biosensing, communication, photocatalysis, and photovoltaics. Entirely new opportunities are currently emerging with the recently demonstrated possibility to spectrally split light at a subwavelength scale with optical antennas. Unfortunately, such small structures offer limited spectral control and are hard to exploit in optoelectronic devices. Here, we overcome both challenges and demonstrate how within a single-layer metafilm one can laterally sort photons of different wavelengths below the free-space diffraction limit and extract a useful photocurrent. This chipscale demonstration of anti-Hermitian coupling between resonant photodetector ele

SUBMITTER: Kim SJ 

PROVIDER: S-EPMC5778063 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature