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Plasmonic microcavity using photo-reduced silver nanoparticles and light-emitting polymer
Optics Express
|February 3, 2016
Summary
Researchers created a plasmonic microcavity using silver nanoparticles. This device exhibits unique spectral output due to localized surface plasmon resonance, enabling novel spectroscopic applications.
Area of Science:
- Optics and Photonics
- Materials Science
- Nanotechnology
Background:
- Fabry-Perot (F-P) microcavities are optical resonators.
- Plasmonics involves the interaction of light with free electrons in metals.
- Localized surface plasmon resonance (LSPR) arises from light interaction with nanoparticles.
Purpose of the Study:
- To engineer a plasmonic Fabry-Perot microcavity.
- To investigate the effect of LSPR on the microcavity's optical properties.
- To explore novel spectroscopic applications.
Main Methods:
- Fabrication of a plasmonic F-P microcavity using silver nanoparticles and a silver film as mirrors.
- Photo-reduction method for silver nanoparticle synthesis.
- Incorporation of a light-emitting polymer within the microcavity.
- Analysis of the output spectrum and resonance modes.
Main Results:
- The plasmonic F-P microcavity demonstrated output spectrum modulation by LSPR.
- A significant phase shift of π was observed in the resonance modes.
- The device exhibited complementary spectroscopic performance compared to non-plasmonic cavities.
Conclusions:
- The developed plasmonic microcavity is an active optical device.
- LSPR effectively modulates the microcavity's resonance modes.
- This technology offers potential for advanced spectroscopic applications.
