Microstructured frequency selective quasi-optical components for submillimeter-wave applications

We present the selected results of research-and-development activities focused on improving conventional and creating novel passive quasi-optical components of submillimeter-wave instrumentation. Realized as high-performance single- and multi-layered metallized microstructures of sub-wavelength topology, the components include band-pass filters, non-profiled focusing devices, thin-film phase and polarization transformers, and ultra-thin resonant absorbers. The aspects of electromagnetic modeling, fabrication, and characterization of the developed devices are described together with their practical applications.