All-optical ultrafast polarization switching with nonlinear plasmonic metasurfaces.

ABSTRACT: Optical switching has important applications in optical information processing, optical computing, and optical communications. The long-term pursuit of optical switch is to achieve short switching time and large modulation depth. Among various mechanisms, all-optical switching based on Kerr effect represents a promising solution. However, it is usually difficult to compromise both switching time and modulation depth of a Kerr-type optical switch. To circumvent this constraint, symmetry selective polarization switching via second-harmonic generation (SHG) in nonlinear crystals has been attracting scientists' attention. Here, we demonstrate SHG-based all-optical ultrafast polarization switching by using geometric phase controlled nonlinear plasmonic metasurfaces. A switching time of hundreds

SUBMITTER: Wang H 

PROVIDER: S-EPMC10881032 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature