The first theoretical models of the propagation of an electromagnetic field in a waveguide date back to the second half of the 19th century (Hertz, Debye, Rayleigh). The technological fallout for long ...
Terahertz radiation—loosely defined as the region of the electromagnetic spectrum between 0.5 THz and 5 THz (ref. 5)—finds promising applications in very different areas of science and technology, ...
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