title: A hybrid analysis method for plasmonic enhanced terahertz photomixer sources.
abstract: A hybrid analysis of a continuous-wave terahertz photomixer source structure with plasmonic nano-grating electrodes is presented. Using the hybrid analysis, the enhancement of the optical power absorption due to the presence of the one-dimensional metallic nano-grating is investigated by defining an absorption enhancement factor. We show that the proposed absorption enhancement factor can be used as a design tool, whose maximization provides the optimum geometrical parameters of the nano-grating. Based on drift-diffusion model, the photocurrent enhancement due to the nano-grating electrodes is studied under three different bias configurations. Moreover, the dependence of the photocurrent on the physical parameters of the photomixer is analyzed.
authors.affiliation: Department of Electrical and Computer Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada. sjafarlo@uwaterloo.ca
authors.forename: Saman
authors.initials: S
authors.lastname: Jafarlou
authors.forename: Mohammad
authors.initials: M
authors.lastname: Neshat
authors.forename: Safieddin
authors.initials: S
authors.lastname: Safavi-Naeini
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D004566:Electrodes; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008962:Models, Theoretical; D020349:Surface Plasmon Resonance / Q000295:instrumentation*; D055053:Terahertz Radiation