Ultrafast all-optical switching in the presence of Bloch surface waves. (March 2020)

• Record Type: Journal Article
• Authors: Popkova, Anna A; Chezhegov, Aleksandr A; Soboleva, Irina V; Rybin, Maxim G; Obraztsova, Elena D; Bessonov, Vladimir O; Fedyanin, Andrey A
• Is Part Of: Journal of physics. Volume 1461(2020)
• Publication Date: 2020-03
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1461/1/012134
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: It is commonly known that Bloch surface waves (BSW) can be excited at the photonic crystal/dielectric boundary that leads to many features attractive for application these states as the basis of sensors and nanophotonic devices. The narrow spectral-angular resonance of BSW is very sensitive to properties of top layer and surrounding medium. There are few ways to enhance nonlinear optical response of a top layer without violation of BSW excitation conditions. In this work we choose graphene monolayer as a source of strong nonlinearity with tiny thickness. We study temporal nonlinear optical response of graphene in the case of Bloch surface waves excitation revealing subpicosecond switching time of probe dynamics.