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Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation
Published on: September 27, 2011
Enhancing spin-orbit interaction of light by plasmonic nanostructures
1Department of Physical Sciences, IISER-Kolkata, BCKV Main Campus, Mohanpur, India.
Optics Letters
|August 14, 2013
Summary
Spin orbit interactions of light are explored in plasmonic nanoparticles. Interference between neighboring plasmon resonances controllably tunes and enhances these spin orbit interactions.
Area of Science:
- Plasmonics
- Nanoparticle optics
- Quantum optics
Background:
- Spin orbit interaction (SOI) of light is a fundamental phenomenon.
- Plasmon resonant metal nanoparticles exhibit unique optical properties.
- Understanding SOI in nanostructures is crucial for advanced optical applications.
Purpose of the Study:
- Investigate spin orbit interactions (SOI) of light in plasmonic nanorods and nanospheres.
- Analyze the influence of neighboring plasmon resonances on SOI effects.
- Determine how to controllably tune and enhance SOI using plasmonic nanostructures.
Main Methods:
- Utilized Jones and Mueller matrix polarimetry formalism.
- Investigated single scattering from plasmon resonant metal nanoparticles.
- Analyzed effects of orthogonal electric dipolar modes in nanorods.
- Analyzed effects of electric dipolar and quadrupolar modes in nanospheres.
Main Results:
- Demonstrated that neighboring resonances significantly affect SOI.
- Interference between modes allows for tunable SOI.
- Mueller matrix-derived polarimetry characteristics (diattenuation and retardance) reveal SOI.
- Each SOI effect can be controllably tuned and enhanced.
Conclusions:
- Plasmonic nanostructures offer a platform for manipulating SOI of light.
- Exploiting mode interference provides a method for controlling SOI.
- This research opens avenues for novel optical devices and functionalities.
