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Plasmonic detectors have the potential to provide a method of rapidspectroscopy without the need of moving mirrors or gratings. Previousmeasurements have demonstrated frequency tunable detection based on plasmonicexcitations, however these devices were either small area, polarizationdependent and/or required e-beam lithography. We demonstrate that large areahigh sensitivity THz plasmonic detection can be achieved using self-assemblynanosphere lithography. We achieve a submicron feature size grid covering adetector area of 4 mm^2. Measurements at 80 K show a large transmission changeof 25% and a blue shift with decreasing aperture size due to coupling of disklattice. The resonant frequencies of our device are function of radius, notperiodicity. We also confirmed a magneto plasmon dispersion of the device. Inconclusion we find that fabrication of self-assembled grids is a rapid andreliable method for plasmonic devices in the terahertz range.

Use of Self-assembled Plasmonic Hole Arrays on AlGaAs/GaAs 2DEG for Large Area Terahertz Applicaton