Discriminating between Coherent and Incoherent Light with Planar Metamaterials
Abstract
Metasurfaces represent a powerful paradigm of optical engineering that enables one to control the flow of light across material interfaces. We report on a discovery that metallic metasurfaces of a certain type respond differently to spatially coherent and incoherent light, enabling robust speckle-free discrimination between different degrees of coherence. The effect has no direct analogue in conventional optics and may find applications in compact metadevices enhancing imaging, vision, detection, communication and metrology.
- Publication:
-
Nano Letters
- Pub Date:
- October 2019
- DOI:
- 10.1021/acs.nanolett.9b02094
- arXiv:
- arXiv:1807.01654
- Bibcode:
- 2019NanoL..19.6869F
- Keywords:
-
- Physics - Optics
- E-Print:
- 11 pages, 5 figures