NICOP - Graphene Plasmonics for Terahertz Devices
Abstract
Graphene Plasmonics for Terahertz Devices Technical:Intrinsic graphene has a zero bandgap with its charged carriers behaving like Dirac fermions with a zero mass, resulting in many extraordinary properties that are very different from other materials. Such properties can be modified by proper impurity doping or by electrical or optical modulation, making graphene extremely attractive for novel device applications. The proposed research focuses on graphene-based plasmonic and optoelectronic devices for applications in the broad spectral range from THz to the infrared. The plasmonic property of graphene largely depends on its intrinsic Fermi energy and the substrate where the graphene is deposited. Therefore, by carefully designing the substrate, the plasmonic response of graphene can be tailored accordingly. Furthermore, if a metallic metamaterial is used as the substrate, this coupled graphene metamaterial system can potentially give rise to a family of resonant modes beside the graphene plasmon modes. To fully utilize these coupled plasmon modes in a device, it is of utmost importance to understand the plasmonic response of these modes. The two focuses of the proposed study are: (a) coupled plasmon modes of graphene on a metamaterial, and (b) tunable broadband plasmonic devices.b. Relevance: The electronic, optical, and optoelectronic properties of graphene, together with its unique nanostructure, offer innovative opportunities to applications for high-speed/high-frequency electronic and optoelectronic devices, terahertz (THz) oscillators and sensors, and ultrafast nonlinear optical elements. The research could have impact on the following Naval S&T Focus Areas: electromagnetic maneuver warfare and power projection & integrated defense.c. Coordination: Dr. Mike Shlesinger (ONR Code 30), Mr. Ryan Hoffman (ONR Code 35), Dr. Jeffrey C. Owrutsky (NRL), Dr. Joshua Caldwell (NRL), Dr. Heungsoo Kim (NRL), Dr. Joe Roberts (NAWCWD), and Dr. Seng Hong of AOARDd. Desired Outcome: This project will establish the fundamental understanding of coupled plasmon modes on a metamaterial substrate. Such understanding will enable the design and fabrication of tunable broadband plasmonic devices in the THz to mid-infrared spectral range, particularly graphene-based modulator, filter, emitter, and detector.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Nov 23, 2016
- Source ID
- N629091612223
Entities
People
- Chih Wei Luo
Organizations
- National Chiao Tung University
- Office of Naval Research
- United States Navy