Photonics, Год журнала: 2025, Номер 12(5), С. 463 - 463

Опубликована: Май 9, 2025

A dual-band tunable terahertz electromagnetically induced transparency (EIT) metamaterial is introduced. The EIT consists of two rectangular split rings, metal strips, and a patterned vanadium dioxide (VO2) located at the back. rings serve as bright resonator to generate resonance valleys distinct frequencies. strips act dark are indirectly activated via coupling influence resonator. metamaterial’s response mechanism analyzed field effect two-particle model, with theoretical fitting results showing strong agreement simulation results. Moreover, VO2’s conductivity altered dynamically control in both frequency bands. Two windows, modulation depths 70% 75%, observed VO2 decreases. Simultaneously, reveal favorable slow light effect, group delays reaching 51 ps 74 windows. proposed holds considerable promise for future modulator, filter, device applications.

Язык: Английский