Terahertz (THz) radiation, occupying the spectral region between microwave and infrared frequencies, is emerging as a vital tool in fields ranging from wireless communications and spectroscopy to ...
Terahertz quantum cascade laser (QCL) sources represent a significant breakthrough in the generation of coherent terahertz radiation from compact, electrically pumped semiconductor devices. By ...
The nonlinear susceptibility is a measure of a material's nonlinear response to an applied electric field. It determines the strength of the nonlinear effects and is related to the crystal's symmetry ...
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