Abstract
We prove that, at any point of any reciprocal structure, the local field intensity enhancement, which is averaged over the incident wave polarizations and the incidence directions, exactly coincides with the radiative part of the Purcell factor, which is averaged over the orientations of the emitter. This result is important for gaining a better understanding of the electromagnetic Raman gain in the surface-enhanced Raman scattering and for the further development of this technique.
| Original language | English |
|---|---|
| Pages (from-to) | 429-434 |
| Number of pages | 6 |
| Journal | Nanophotonics |
| Volume | 8 |
| Issue number | 3 |
| Early online date | 1 Jan 2019 |
| DOIs | |
| Publication status | Published - 26 Mar 2019 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- Green's function
- local intensity enhancement
- Purcell factor
- reciprocity
- surface-enhanced Raman scattering