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Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
Multiple coupling of surface plasmons in quasiperiodic gratings.
Ido Dolev1, Michael Volodarsky, Gil Porat
1Department of Physical Electronics, Fleischman Faculty of Engineering, Tel-Aviv University, Tel-Aviv 69978, Israel. idodolev@tau.ac.il
Optics Letters
|May 5, 2011
Summary
Quasiperiodic gratings allow light coupling into surface plasmon polaritons at various angles and wavelengths, unlike periodic gratings. This advancement offers greater control and flexibility in plasmonic applications.
Area of Science:
- Optics and Photonics
- Materials Science
Background:
- Periodic gratings couple light to surface plasmon polaritons (SPPs) but are limited to specific angles and wavelengths.
- Controlling light-plasmon interactions is crucial for advanced photonic devices.
Purpose of the Study:
- To demonstrate that quasiperiodic gratings can couple light into SPPs over a range of angles and wavelengths.
- To introduce a systematic design method for quasiperiodic gratings for tailored light-plasmon coupling.
Main Methods:
- Utilized a dual-grid method for systematic design of quasiperiodic gratings.
- Experimentally verified the efficient coupling of light into SPPs using a single quasiperiodic grating under varying illumination conditions.
Main Results:
- Quasiperiodic gratings enable broadband and angularly diverse coupling of light into SPPs.
- The dual-grid method allows precise control over grating dimensions and coupling strength.
- Experimental validation confirmed efficient SPP coupling from multiple angles with a single grating.
Conclusions:
- Quasiperiodic gratings offer a significant advantage over periodic gratings for versatile light-SPP coupling.
- The demonstrated design method provides a pathway for developing novel plasmonic devices with enhanced functionalities.
