Valley polarization induced second harmonic generation in graphene

Probing of valley polarization in graphene via optical second-harmonic generation

Second-harmonic generation in subwavelength graphene waveguides

We suggest a novel approach for generating the second-harmonic radiation in subwavelength graphene waveguides. We demonstrate that the quadratic phase matching between plasmonic guided modes of different symmetries can be achieved in a planar double-layer graphene structure when conductivity of one of the layers becomes spatially modulated. We predict theoretically that, owing to graphene nonlo...

Second-harmonic generation by a graphene nanoparticle

Daria A. Smirnova,1 Ilya V. Shadrivov,1 Andrey E. Miroshnichenko,1 Alexander I. Smirnov,2,3 and Yuri S. Kivshar1 1Nonlinear Physics Center, Research School of Physics and Engineering, Australian National University, Canberra ACT 0200, Australia 2Lobachevsky State University, Nizhny Novgorod 603950, Russia 3Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod 603950, Russia...

Polarization-resolved second-harmonic-generation optical coherence tomography in collagen.

We describe a novel imaging technique, second-harmonic-generation optical coherence tomography (SHOCT). This technique combines the spatial resolution and depth penetration of optical coherence tomography (OCT) with the molecular sensitivity of second-harmonic-generation spectroscopy. As a consequence of the coherent detection required for OCT, polarization-resolved images arise naturally. We d...

Second-harmonic generation in vortex-induced waveguides.

We study the second-harmonic generation and localization of light in a reconfigurable waveguide induced by an optical vortex soliton in a defocusing Kerr medium. We show that the vortex-induced waveguide greatly improves conversion efficiency from the fundamental to the second-harmonic field.