Terahertz (THz) radiation occupies the spectral gap between microwave and infrared frequencies, typically defined as 0.1–10 THz. Its unique position enables non-ionising probing of molecular ...
Active metadevices integrated with semiconductors. (a) Hybrid silicon-metallic resonators for all-optical ultrafast active metamaterials. (b) Broadband metamaterial frequency switch with femtosecond ...