TY - JOUR
T1 - Surface second-harmonic generation from metallic-nanoparticle configurations
T2 - A transformation-optics approach
AU - Nireekshan Reddy, K.
AU - Chen, Parry Y.
AU - Fernández-Domínguez, Antonio I.
AU - Sivan, Yonatan
N1 - Publisher Copyright:
© 2019 American Physical Society.
PY - 2019/6/25
Y1 - 2019/6/25
N2 - We study surface second-harmonic generation (SHG) from a singular plasmonic structure consisting of touching metallic wires. We use the technique of transformation optics and relate the structure to a rather simpler geometry, a slab waveguide. This allows us to obtain an analytical solution to the problem, revealing rich physical insights. We identify various conditions that govern the SHG efficiency. Importantly, our analysis demonstrates that apart from the mode-matching condition, the phase-matching condition is relevant even for this subwavelength structure. Furthermore, we identify a geometric factor which was not identified before. We support our analysis with numerical simulations.
AB - We study surface second-harmonic generation (SHG) from a singular plasmonic structure consisting of touching metallic wires. We use the technique of transformation optics and relate the structure to a rather simpler geometry, a slab waveguide. This allows us to obtain an analytical solution to the problem, revealing rich physical insights. We identify various conditions that govern the SHG efficiency. Importantly, our analysis demonstrates that apart from the mode-matching condition, the phase-matching condition is relevant even for this subwavelength structure. Furthermore, we identify a geometric factor which was not identified before. We support our analysis with numerical simulations.
UR - http://www.scopus.com/inward/record.url?scp=85068601534&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.99.235429
DO - 10.1103/PhysRevB.99.235429
M3 - Article
AN - SCOPUS:85068601534
SN - 2469-9950
VL - 99
JO - Physical Review B
JF - Physical Review B
IS - 23
M1 - 235429
ER -