Czasopismo | ELEKTRONIKA - KONSTRUKCJE, TECHNOLOGIE, ZASTOSOWANIA | Rocznik 2014 - zeszyt 2

Investigation of the reflective properties of layered antiferromagnetic-dielectric structures

nr katalogowy: 82513

The terahertz radiation is an interesting, important, and actively investigated frequency region. Development of this range is limited by a lot of reasons and one of them is a deficiency in a component base [1]. Non-reciprocity based on the non-Faraday effects is presented in this work. There are various ways to obtain nonreciprocal properties for anisotropic layered structures. One way is to use a well-known Faraday rotation effect, such as in optical isolators described in [2]. The handedness of this rotation depends on the propagation direction. In the terahertz region Faraday rotation in the ferrofluid at the room temperature was described in the work [3]. The electrically tunable Faraday effect in HgTe thin film is presented in [4]. Electrical control of the room-temperature Faraday effect was described there. High speed amplitude and phase modulators based on such structures were proposed in that paper. Near-infrared Faraday rotation in antiferromagnetic was described for example in paper [5] where laser pulse translation and signal transients in FeBO3 were observed as functions of sample temperature. Next way to obtain nonreciprocal properties is using nonlinear materials in heterostructures. For example in [6] the heterostructures based on the piezoelectric and semiconductor layers was proposed for radio-frequency application. Surface acoustic wave isolator based on two physical phenomena - strongly nonlinear interaction and drifting electron system was proposed here. Another examples of nonreciprocal properties of nonlinear devises in terahertz region was presented in paper [7] where a Faraday isolator operating on the coupled microwave resonators circuit. Another way is to use nature non-reciprocity of anisotropic materials. These properties are widely investigated and described later. For example non-reciprocity reflection in semi-infinitive layered magnetic-dielectric structures is described in [8]. Properties asso[...]

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2014-2

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