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Non-reciprocal diffraction in magnetoplasmonic gratings.

Rafael Cichelero, Mikko Kataja, Mariano Campoy-Quiles

|January 18, 2019

Summary

Diffraction combined with plasmon excitations creates versatile photonic systems. This approach yields large diffracted magneto-optical effects in gratings, enabling novel non-reciprocal optical devices.

Area of Science:

Optics and Photonics
Materials Science
Condensed Matter Physics

Background:

Phase-matching conditions are crucial for coupling light with surface plasmon polaritons (SPPs).
Existing methods enable nonreciprocal optical propagation and enhanced magneto-optic effects in magnetoplasmonic systems.
A need exists for more versatile and flexible photonic systems for tailored electromagnetic responses.

Purpose of the Study:

To investigate the use of diffraction in conjunction with plasmon excitations for novel photonic responses.
To analyze diffracted magneto-optical effects in magnetoplasmonic gratings.
To demonstrate a new pathway for developing non-reciprocal optical devices.

Main Methods:

Utilized magnetoplasmonic gratings as a testbed for analyzing diffracted magneto-optical effects.

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Investigated the interplay between diffraction and plasmon excitations.

Analyzed frequency shifts in plasmon resonance spectra due to broken time-reversal symmetry.

Main Results:

Demonstrated that combining diffraction with plasmon excitations leads to a more versatile photonic system.
Observed exceptionally large responses in the diffracted magneto-optical effect within the gratings.
Showcased frequency shifts in energy and angular spectra of plasmon resonance.

Conclusions:

Diffraction offers a flexible approach to engineer electromagnetic responses in plasmonic systems.
The findings pave the way for developing advanced non-reciprocal optical devices.
This work highlights the potential of diffracted magneto-optical effects for future photonic applications.