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Superabsorption of light by multilayer nanowires
Ali Mirzaei1, Ilya V Shadrivov, Andrey E Miroshnichenko
1Nonlinear Physics Centre, Australian National University, Acton, ACT 2601, Australia. ali.mirzaei@anu.edu.au.
Nanoscale
|October 15, 2015
Summary
We present a new strategy to enhance light absorption in multilayered nanowires. This method leverages overlapping resonant modes for tunable, multiband optical absorption across a wide spectral range.
Area of Science:
- Optics and Photonics
- Materials Science
Background:
- Nanowires offer unique optical properties due to their geometry.
- Controlling light absorption in nanostructures is crucial for optoelectronic devices.
Purpose of the Study:
- To introduce a novel strategy for tailoring and enhancing light absorption in multilayered nanowires.
- To explore the potential for designing multiband tunable optical absorption.
Main Methods:
- Utilizing the multipole expansion method.
- Incorporating experimental data for dielectric and plasmonic materials.
Main Results:
- Demonstrated substantial enhancement of light absorption for specific polarizations.
- Attributed enhancement to the overlap of different resonant modes within the nanowires.
Conclusions:
- The proposed approach enables the design of tunable, multiband optical absorbers.
- Applicable for both transverse electric (TE) and transverse magnetic (TM) polarizations across a broad spectral range.
