Low-loss Broadband Negative Refractive Index due to Nonresonant 2D Helical Chiral Metamaterial

2017/05/07 by Kun Song, Min Wang, Song, Kun +15
Engineering · Materials Science · Physics and Astronomy · #Advanced Antenna and Metasurface Technologies #FOS: Physical sciences #Metamaterials and Metasurfaces Applications #Optics (physics.optics) #Quantum Mechanics and Non-Hermitian Physics

paper · pdf · doi:10.48550/arxiv.1705.02676

openalex publication_date 2017/05/07 · openalex created_date 2017/05/19 · openalex updated_date 2026/07/28

Abstract

We demonstrated a 2D helical chiral metamaterial that exhibits broadband strong optical activity resulting nonresonant Drude-like response. The strong chirality leads to broadband negative refractive index with high figure of merit (>90) and extremely low loss (<2% per layer). The optical activity are insensitive to the angles of incident electromagnetic waves, thereby enabling more flexibility in polarization manipulation applicaitons.

Related

• Broadband angle- and permittivity-insensitive nondispersive optical activity based on chiral metamaterials
• Chiral Negative-Index Metamaterials in Terahertz
• Inverse Designed WS2 Planar Chiral Metasurface with Geometric Phase
• Strong and Broadband Pure Optical Activity in 3D Printed THz Chiral Metamaterials
• Double-negative electromagnetic metamaterials due to chirality