학술논문

Enhanced second harmonic generation by double plasmon resonances in mesoscale flower-like silver particles.
Document Type
Article
Source
Applied Physics Letters. 1/1/2019, Vol. 114 Issue 1, pN.PAG-N.PAG. 4p. 1 Color Photograph, 3 Graphs.
Subject
*SECOND harmonic generation
*SURFACE plasmon resonance
*NANOSTRUCTURED materials
*INDIUM tin oxide
*SILVER
*GLASS coatings
Language
ISSN
0003-6951
Abstract
We investigate second harmonic generation (SHG) response of mesoscale silver (Ag) particles. The flower-like Ag mesoparticles and Ag micro-hemispheres on an indium tin oxide coated glass substrate were prepared by a simple electrochemical deposition method. We find that the mesoscale Ag particles show a strong SHG response associated with their geometries. The dependence of the SHG on the excitation wavelength reveals that the multi-resonant response occurring at the emission wavelengths plays an important role in SHG enhancement. [ABSTRACT FROM AUTHOR]