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Handbook of Terahertz Technology for Imaging, Sensing and Communications by D Saeedkia

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4

Fundamental aspects of terahertz near-field imaging and sensing

D.-S. Kim and Y.-M. Bahk,     Seoul National University, Republic of Korea

P.C.M. Planken,     Delft University of Technology, The Netherlands

Abstract:

The terahertz (THz) frequency range lies between optics and electronics, and THz frequencies are the lowest frequencies in which free space conventional optics can still be used before microwave components take over. Owing to its large wavelength, deep subwavelength phenomena of λ/100 are experimentally accessible even with a few microns of spatial resolution. In this chapter, a number of different imaging techniques to overcome the diffraction limit in the THz frequency will be reviewed. Particular emphasis will be given ...

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