By Saroj Rout, Sameer Sonkusale
This ebook covers the theoretical history, experimental equipment and implementation information to engineer for verbal exchange and imaging program, terahertz units utilizing metamaterials, in mainstream semiconductor foundry strategies. This publication will supply engineers and physicists an authoritative connection with build such units with minimum historical past. The authors describe the layout and development of electromagnetic (EM) units for terahertz frequencies (108-1010 cycles/sec) utilizing man made fabrics which are a fragment of the wavelength of the incident EM wave, leading to an effective electric and magnetic houses (permittivity and permeability) which are unavailable in average materials.
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Extra info for Active Metamaterials: Terahertz Modulators and Detectors
1. Except for a narrow region around the resonance, r0 increases with frequency called the normal dispersion. In the narrow region of the resonance it decreases with frequency called anomalous dispersion. This region is also the frequency interval of maximum absorption as will be shown later in this section. The width of this region is equal to the loss factor . t/ p However, the wave number k D ! 34) is complex. 36) 34 2 Background Theory Fig. /= 0 in the neighborhood of a resonance. The region of anomalous dispersion is also the frequency interval for the maximum absorption Evidently, ˛=2 measures the attenuation of the wave.
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Active Metamaterials: Terahertz Modulators and Detectors by Saroj Rout, Sameer Sonkusale