Ultra-multi-mode high-Q plasmonic resonances by extracting guided modes via metallic lattice

Key Points

• The aim is to explore ultra-multi-mode plasmonic resonances that achieve high quality factors for enhanced photonic functionalities.
• Developed a metallic lattice structure to extract guided modes.
• Investigated the quality factors of the plasmonic resonances through experimentation.
• Demonstrated multiple plasmonic resonances with significantly higher Q factors than conventional designs.
• Confirmed enhanced multifunctionality, enabling applications in biosensing and nonlinear optics.