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Structured Surface-Plasmon THz Components and Devices

技術優勢

- Tunable extinction ratio of THz polarizer based on structured surface plasmons- High extinction ratio and THz electric field enhancement- THz Fabry-Perot interferometer with tunable reflectivity, and tunable finesse- Improved target detection and imaging capabilities using SPP-coupled THz Schottky rectifier arrays

技術應用

- Terahertz wire-grid polarizers- Tunable reflectors in scanning Fabry-Perot interferometers- Integrated MMW-THz optical isolators with birefringent quarter wave-plate- THz imaging arrays based on distributed Schottky rectifiers

詳細技術說明

None

*Abstract

The current invention provides methods to create an assortment of millimeter-wave-to-terahertz (MMW-THz) components and devices based on the extraordinary optical transmission (EOT) through the gaps of planar-metal wire grids (i.e., strip-grids). These have the following features:(1) The transmission and reflection of THz radiation can be adjusted by varying the fraction of metal (fill factor or effective fill factor) in the wire-grid structures where the ΓÇ£structured surface plasmons (SSPs)ΓÇØ are excited; (2) The EOT is very sensitive to incident polarization, which provides extremely high extinction ratios up to 50 dB or higher in a single structure; and (3) The electric field of incident THz radiation polarized perpendicular to the wire grid is concentrated and enhanced in the gaps, which enables more sensitive MMW-THz detectors based on distributed Schottky-diode rectifiers.

*Principal Investigation

Name: Elliott Brown

Department:

Name: John Cetnar

Department:

Name: John Middendorf

Department:

國家/地區

美國