8 December 2004 A micromechanical beam-steering device for terahertz systems
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Beam-steering techniques are required to fully exploit terahertz imaging systems. We propose and model a device employing artificial dielectric techniques to provide a variable phase-control medium. The device consists of two interlocking artificial dielectric surfaces that are initially aligned parallel to each other. By mechanically introducing a relative tilt between the plates, a transmitted wave is subjected to a graded phase delay and thus the beam is steered away from the normal. Continuous and large steering angles are possible. We predict a practical device constructed from a silicon substrate could steer TE beams by up to 4.6 degrees.
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Timothy D. Drysdale, Timothy D. Drysdale, David R. S. Cumming, David R. S. Cumming, } "A micromechanical beam-steering device for terahertz systems", Proc. SPIE 5619, Passive Millimetre-Wave and Terahertz Imaging and Technology, (8 December 2004); doi: 10.1117/12.578303; https://doi.org/10.1117/12.578303

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