Phase-matched nonlinear second-harmonic generation in plasmonic metasurfaces
Abstract
The phase matching between the propagating fundamental and nonlinearly generated waves plays an important role in the efficiency of the nonlinear frequency conversion in macroscopic crystals. However, in nanoscale samples, such as nanoplasmonic structures, the phase-matching condition is often ignored due to the sub-wavelength nature of the materials. Here, we first show that the phase matching of the lattice plasmon modes at the fundamental and second-harmonic frequencies in a plasmonic nanoantenna array can effectively enhance the surface-enhanced second-harmonic generation. Additionally, a significant enhancement of the second-harmonic generation is demonstrated using stationary band-edge lattice plasmon modes with zero phase.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 07, 2019
- Source ID
- 10.1515/nanoph-2018-0181
Entities
People
- Ali Adibi
- Ali Eshaghian Dorche
- Ali. A. Eftekhar
- Feng Wang
- Hayk Harutyunyan
- Hossein Taheri
- Robert Lemasters
- S. Hamed Shams Mousavi
Organizations
- Air Force Office of Scientific Research
- Emory University
- Georgia Tech