.png){kind=icon}
.png){kind=icon}
Return
Plasmonic nano-comb structures for efficient large-area second harmonic generation
.png){kind=icon}
OA
AI
DOI：10.1364/OE.22.017116.png)
.png){kind=icon}
.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
We propose and demonstrate plasmonic nano-comb (PNC) structures for efficient large-area second-harmonic generation (SHG). The PNCs are made of 250 nm-thick gold film and have equally-spaced 30 nm-slits filled with ployvinylidene fluoride-co-trifluoroethylene (P(VDF-TrFE)). The PNC with 1.0 mu m-spacing couples resonantly with 1.56 mu m 100-fs laser beams. For the 1.0 mu m-spacing PNCs under the fixed-pump-power condition, the nonlinear SHG power remains almost independent of the pump diameter ranging from 2 mu m to 6 mu m. The SHG power from the resonant PNC is measured to be 8 times larger than that of the single-nano-gap metallic structure, when the pump beam is tightly-focused to 2 mu m in diameter in both cases. This relative enhancement of the total nonlinear SHG signal power reaches up to >200 when the pump beam diameter is increased to 6 mu m. We attribute this unusual phenomenon to the resonant coupling of the finite-size pump wave with the finite-size one-dimensional plasmonic mode. (C) 2014 Optical Society of America
Keywords:
SURFACE
LIGHT
NANOPARTICLES
EMISSION
FILM
AI Summary
Key information extracted from the uploaded paper, including a brief overview, abstract, background, key highlights, visual analysis, and future outlook.
Journal
IF:
3.3
Papers:
6.1W
Citations:
14.3W
Organization
No organization information available