Pump-Color Selective Control of Ultrafast All-Optical Switching Dynamics in Metaphotonic Devices.

ABSTRACT: Incorporating active materials into metamaterials is expected to yield exciting advancements in the unprecedented versatility of dynamically controlling optical properties, which sheds new light on the future optoelectronics. The exploration of emerging semiconductors into terahertz (THz) meta-atoms potentially allows achieving ultrafast nanodevices driven by various applications, such as biomedical sensing/imaging, ultrawide-band communications and security scanners. However, ultrafast optical switching of THz radiation is currently limited to a single level of tuning speed, which is a main hurdle to achieve multifunctionalities. Here, a hybrid metadevice which can realize the pump-wavelength controlled ultrafast switching response by the functionalization of double photoactive layers is

SUBMITTER: Hu Y 

PROVIDER: S-EPMC7375251 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature