Plasmonic enhancement of photoacoustic-induced reflection changes
| Authors |
|
|---|---|
| Publication date | 20-08-2021 |
| Journal | Applied Optics |
| Volume | Issue number | 60 | 24 |
| Pages (from-to) | 7304-7313 |
| Number of pages | 10 |
| Organisations |
|
| Abstract |
In this paper, we report on surface-plasmon-resonance enhancement of the time-dependent reflection changes caused by laser-induced acoustic waves.We measure an enhancement of the reflection changes induced by several acoustical modes, such as longitudinal, quasi-normal, and surface acoustic waves, by a factor of 10-20.We show that the reflection changes induced by the longitudinal and quasi-normal modes are enhanced in the wings of the surface plasmon polariton resonance. The surface acoustic wave-induced reflection changes are enhanced on the peak of this resonance.We attribute the enhanced reflection changes to the longitudinal wave and the quasi-normal mode to a shift in the surface plasmon polariton resonance via acoustically induced electron density changes and via grating geometry changes. |
| Document type | Article |
| Language | English |
| Published at | https://doi.org/10.1364/AO.432659 |
| Other links | https://www.scopus.com/pages/publications/85113276065 |
| Downloads |
ao-60-24-7304 (1)
(Final published version)
|
| Permalink to this page | |