Subwavelength electromagnetic dynamics in stacked complementary plasmonic crystal slabs

Area of Science:

• Physics
• Materials Science
• Electromagnetism

Background:

• Plasmonic nanostructures offer unique light-matter interactions.
• Complementary plasmonic crystals provide novel electromagnetic field confinement.
• Subwavelength structures are crucial for advanced optical devices.

Purpose of the Study:

• To numerically investigate resonant electromagnetic fields in stacked complementary plasmonic crystal slabs (sc-PlCSs).
• To analyze the nature of local plasmon resonances within these structures.
• To demonstrate the realization of resonant electromagnetic states and their impact on light transmission.

Main Methods:

• Numerical exploration of resonant electromagnetic fields.
• Analysis of two specific sc-PlCS designs.
• Investigation of local plasmon behavior and Poynting flux.

Main Results:

• Local plasmon resonances in sc-PlCSs are composite states of enhanced electric and magnetic fields.
• Each analyzed sc-PlCS realizes a resonant electromagnetic state consistent with Maxwell's equations.
• Local plasmons facilitate efficient Poynting flux, leading to high-contrast polarized transmission.

Conclusions:

• sc-PlCSs exhibit unique electromagnetic field enhancements.
• These structures can support specific resonant electromagnetic states.
• The findings suggest potential applications in controlling polarized light transmission.