Polarization-controlled generation of Airy plasmons

Area of Science:

• Photonics and Plasmonics
• Metasurface Optics
• Nanophotonics

Background:

• Plasmonic metasurfaces can generate Airy plasmons, but existing designs are limited to specific light polarization states.
• Airy plasmons possess unique non-diffracting, self-healing, and autofocusing properties.

Purpose of the Study:

• To demonstrate a novel design for generating Airy plasmons.
• To overcome the polarization-dependent limitations of existing metasurface-based Airy plasmon generators.
• To explore the potential of Airy plasmons in polarization-controlled optical applications.

Main Methods:

• Utilizing paired nanoslit resonators on a metal surface.
• Adjusting the orientation angles of the nanoslit resonators.
• Investigating Airy plasmon generation under various polarization incidences (x-, y-, left-handed circular, and right-handed circular).

Main Results:

• Paired nanoslit resonators successfully generated Airy plasmons under diverse polarization states.
• The orientation angles of the resonators were found to be key for controlling polarization response.
• Observed Airy plasmon properties include non-diffraction, self-healing, and autofocusing.

Conclusions:

• The proposed paired nanoslit resonator design offers a versatile platform for generating polarization-controlled Airy plasmons.
• This approach expands the applicability of Airy plasmons beyond limited polarization states.
• The findings suggest significant potential for applications in polarization-controlled plasmonic circuits and surface optical manipulation.