%AYahiaoui, Riad%AMathews, Jay%ABurrow, Joshua%AAgha, Imad%ASevison, Gary%AUrbas, Augustine%ASarangan, Andrew%ASearles, Thomas%D2018%I %K %MOSTI ID: 10303771 %PMedium: X %TThermally Tunable Far-Infrared Metasurfaces Enabled by Ge2Sb2Te5 Phase-Change Material %XThe development of active metadevices continues to present keystone challenges in fields of plasmonics and photonics. Here, we demonstrate an analogue of electromagnetically induced transparency (EIT) effect in a far-infrared metasurface device via near-field coupling of bright and quasi-dark resonances resonating at nearly the same frequency with contrasting line widths. The proposed metasurface was further optimized numerically in order to demonstrate a reconfiguration effect (frequency-shift of the spectral response). The tunability property of the device is achieved by incorporating a thin layer of Ge 2 Sb 2 Te 5 (GST), a temperature-driven phase change material (PCM). Theoretical analysis based on a coupled Lorentz oscillator model explains the physical mechanism in the proposed design and shows a good agreement with the observed results. Such active hybrid EIT metadevices could have applications in tunable slow-light effects, delay bandwidth management and ultrafast laser induced switching. Country unknown/Code not availablehttps://doi.org/10.1109/RAPID.2018.8508956OSTI-MSA