Title: Tunable Graphene Plasmonics for Terahertz Filters, Detectors and Modulators
Abstract: When a conductor is illuminated with light, its electrons can oscillate in collective motion called a plasmon resonance. In metals, these plasmons occur at visible wavelengths, but in graphene the motion happens at much slower terahertz frequencies, and the resonant frequency can be electrostatically tuned by applying a voltage. Graphene plasmonics has the potential to revolutionize terahertz technology – the last great underdeveloped frequency band of electromagnetic waves. Tunable graphene plasmonic resonators have been suggested for use in terahertz filters, modulators, detectors, and emitters, and could find widespread applications in science, medicine, security, and communications. This presentation will discuss progress in the development of practical graphene-based plasmonic devices, and recent experimental measurements and theoretical models that exploit plasmonic resonances for terahertz detection, filtering, and modulation.