Photonic Flatband Resonances in Multiple Light Scattering

Area of Science:

• Photonics and Materials Science
• Investigating light-matter interactions using dielectric nanostructures.

Background:

• Photonic flatbands offer unique light localization properties.
• Understanding collective resonances in particle arrays is crucial for novel optical phenomena.

Purpose of the Study:

• To introduce and demonstrate photonic flatband resonances.
• To explore the role of inter-resonator interactions in flatband formation.
• To predict enhanced light-matter interactions via flatband hybridization.

Main Methods:

• Utilizing multiple Mie scattering theory.
• Analyzing near-field and far-field characteristics of particle arrays.
• Investigating arrays of high-index dielectric particles.

Main Results:

• Demonstrated photonic flatband resonances in dielectric particle arrays.
• Identified short- and long-range interactions as critical for collective resonances and flatbands.
• Showcased the emergence of flatbands through fine-tuning of resonator radiation fields.

Conclusions:

• Photonic flatband resonances can be achieved in dielectric particle arrays.
• Inter-resonator interactions are fundamental to flatband formation.
• Hybridization with electric hotspots can significantly enhance Purcell factors for emitters.