Designer spoof surface plasmon structures collimate terahertz laser beams

Ad Support : Nano Technology   Netbook    Technology News    Computer Software The metamaterial patterns are directly sculpted on the highly doped GaAs facet of the device. Artificial coloring in the figure indicates deep and shallow micron scale grooves, which have different functions. The shallow “blue” grooves efficiently couple laser output into surface electromagnetic waves on the facet …

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