Observing the influence of second-harmonic tangential surface source in gold plasmonic nanostructures
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866909514767269888 |
|---|---|
| author | Mathew, Sandy de Corny, Maëliss Ethis Chauvet, Nicolas Moreaud, Laureen Dujardin, Erik Nogues, Gilles Bachelier, Guillaume |
| author_facet | Mathew, Sandy de Corny, Maëliss Ethis Chauvet, Nicolas Moreaud, Laureen Dujardin, Erik Nogues, Gilles Bachelier, Guillaume |
| contents | The origin of the second harmonic generation (SHG) from plasmonic structures remains a subject of debate. Here, we investigate SHG from gold plasmonic nanostructures by scanning nanostructures at the single-particle level to acquire two-dimensional (2D) SHG maps which are qualitatively and quantitatively compared with numerically simulated SHG maps. This approach allows us to discriminate the role played by the surface and bulk contributions to SHG. Our findings reveal that the tangential surface source contribution, often neglected in the literature, plays a dominant role and is affected by surface roughness. This is evident when comparing the SHG maps obtained from identically sized gold nanoparticles that are fabricated using physical and chemical techniques. Additionally, the normal surface source is not found to significantly impact SHG in these configurations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_19951 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Observing the influence of second-harmonic tangential surface source in gold plasmonic nanostructures Mathew, Sandy de Corny, Maëliss Ethis Chauvet, Nicolas Moreaud, Laureen Dujardin, Erik Nogues, Gilles Bachelier, Guillaume Optics The origin of the second harmonic generation (SHG) from plasmonic structures remains a subject of debate. Here, we investigate SHG from gold plasmonic nanostructures by scanning nanostructures at the single-particle level to acquire two-dimensional (2D) SHG maps which are qualitatively and quantitatively compared with numerically simulated SHG maps. This approach allows us to discriminate the role played by the surface and bulk contributions to SHG. Our findings reveal that the tangential surface source contribution, often neglected in the literature, plays a dominant role and is affected by surface roughness. This is evident when comparing the SHG maps obtained from identically sized gold nanoparticles that are fabricated using physical and chemical techniques. Additionally, the normal surface source is not found to significantly impact SHG in these configurations. |
| title | Observing the influence of second-harmonic tangential surface source in gold plasmonic nanostructures |
| topic | Optics |
| url | https://arxiv.org/abs/2502.19951 |