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Transmission terahertz waveguide-based imaging below the diffraction limit
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DOI：10.1063/1.1942637.png)
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Using a terahertz line source from a near dispersion-free parallel plate waveguide, we demonstrate broad bandwidth imaging at terahertz frequencies with subwavelength image resolution. Terahertz radiation is coupled into a parallel plate waveguide with a 100 mu m plate spacing, which serves as the imaging aperture. The image data are collected as projections and the final image is reconstructed using the filtered back-projection algorithm, similar to that in x-ray computed tomography. Images taken using a waveguide-based line source demonstrate higher resolution than can be achieved using a confocal cylindrical lens setup. (c) 2005 American Institute of Physics.
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3.6
论文数:
10.4W
被引数:
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