Terahertz magnetic field enhancement in an asymmetric spiral metamaterial
نویسندگان
چکیده
منابع مشابه
Theory of magnetic-field enhancement of surface-field terahertz emission
We present a theoretical treatment of surface–field THz generation in semiconductors, which explains the power enhancement observed when a magnetic field is applied. Our model consists of two parts: a Monte Carlo simulation of the dynamics of carriers generated by a subpicosecond optical pulse, and a calculation of the resulting THz radiation emitted through the semiconductor surface. The magne...
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Dichroic polarizers and waveplates exploiting anisotropic materials have vast applications in displays and numerous optical components such as filters, beamsplitters and isolators. Artificial anisotropic media were recently suggested for the realization of negative refraction, cloaking, hyperlenses, and controlling luminescence. However, extending these applications into the terahertz domain is...
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We present a theory of the magnetic field enhancement of terahertz (THz) emission from photogenerated carriers in the surface depletion region of a semiconductor. A combination of the Drude-Lorentz model for the carrier dynamics with an appropriate solution of the radiation problem is sufficient to explain the strong B -field enhancement in THz radiation that has been observed experimentally. T...
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ژورنال
عنوان ژورنال: Journal of Physics B: Atomic, Molecular and Optical Physics
سال: 2018
ISSN: 0953-4075,1361-6455
DOI: 10.1088/1361-6455/aae579