3 papers
physics.app-ph2017
Enhanced Second-harmonic Generation Using Nonlinear Metamaterials
Sinhara R Silva, Khagendra Battarai, Alexander Shields +1
We demonstrate a nonlinear metamaterial which enhance higher order harmonics in microwave frequency regime. Nonlinearity in the structure is introduced by adding a varactor diode i…
physics.app-ph2017
Tunable Optical Bistability and Optical Switching by Nonlinear Metamaterials
Sinhara R Silva, Alexander D Shields, Jiangfeng Zhou
We demonstrate a nonlinear metamaterial in microwave frequency regime with hysteresis effect and bistable states, which can be utilized as a remotely controllable micro second swit…
physics.optics2017
Metamaterial Perfect Absorber Analyzed by a Meta-cavity Model Consisting of Multilayer Metasurfaces
Khagendra Bhattarai, Sinhara Silva, Kun Song +4
We demonstrate that the metamaterial perfect absorber behaves as a meta-cavity bounded between a resonant metasurface and a metallic thin-film reflector. The perfect absorption is…