Fabrication of terahertz antenna for THz spectroscopy applications

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Terahertz (THz) electromagnetic waves have frequencies of order 10^12 Hz and wavelengths order 100 um. Terahertz spectroscopy for material imaging/sensing and characterization has received a great deal of attention over the past decade. It has been shown that many materials including organic materials, explosives, pharmaceutical compounds and biological agents have distinct signatures in the terahertz frequencies. It thus has potential applications in areas such as the pharmaceutical industry, food industry, organic light emitting diode, security, aerospace, oil industry, medical imaging, medicine, as well as high-data-rate communications. The distinct characteristics of terahertz radiation, along with recent advances in the enabling technologies, have created the opportunity for the terahertz technology to provide unique solutions to many critical industrial problems. TeTechS Inc. (www.tetechs.com) is a terahertz technology solution company committed to developing terahertz sensor and imaging systems for industrial and scientific applications. TeTechS Inc. is currently offering a variety of leading-edge terahertz products ranging from photo-conductive antenna chips to terahertz spectroscopy systems, to industry and academic customers worldwide. The current project aims to fabricate: (1) photoconductive chips with vertical structure that has improved performance compared to the common planar interdigitated photo-conductive antenna; (2) photo-conductive antennas that can work at telecom wavelength (1550 nm) and can be coupled to fiber optics, which would reduce the size for compact terahertz spectroscopic systems; and (3) very high frequency terahertz antennas.