Magnetooptic rigorous coupled wave analysis: numerical investigation of nonreciprocal waveguiding structures (Conference Presentation)

Pavel Kwiecien; Ivan Richter; Vladimir Kuzmiak; Jirí Ctyroký

doi:10.1117/12.2322950

17 September 2018 Magnetooptic rigorous coupled wave analysis: numerical investigation of nonreciprocal waveguiding structures (Conference Presentation)

Pavel Kwiecien, Ivan Richter, Vladimir Kuzmiak, Jirí Ctyroký

Author Affiliations +

Proceedings Volume 10719, Metamaterials, Metadevices, and Metasystems 2018; 107192B (2018) https://doi.org/10.1117/12.2322950
Event: SPIE Nanoscience + Engineering, 2018, San Diego, California, United States

Abstract

One of only few possibilities how to impose nonreciprocity in guiding subwavelength structures is to apply an external magnetic field (mainly in the Voigt configuration). In such a case, one-way (nonreciprocal) propagation of SP is not only possible but may bring many interesting phenomena in connection with magnetoplasmons (MSP). We have developed an efficient 2D numerical technique based on MO aperiodic rigorous coupled wave analysis – MOaRCWA. In our in-house tool, the artificial periodicity is imposed within a periodic 1D RCWA method, in the form of the complex transformation and / or uniaxial perfectly matched layers. We have combined the MOaRCWA simulations with (quasi)analytical predictions in order to study MSP performance of plasmonic nanostructures with highly-dispersive polaritonic InSb material, in the presence of external magnetic field. Here, Voigt MO effect can be used to impose nonreciprocity (one-way propagation) bringing new interesting phenomena in connection with MSP. As an example of interesting structures studied, InSb-based THz waveguides were analyzed. We have shown that the one-way bandwidth can be controlled by an external magnetic field and by the permittivity and thickness of the dielectric guiding layer. Based on such analysis of simple guiding structures, we have proceeded with modeling of several more complex magnetooptical InSb microstructures in THz range. Finally, recently, we have worked on the extension of our MOaRCWA numerical tool to fully 3D case.

Conference Presentation

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Pavel Kwiecien, Ivan Richter, Vladimir Kuzmiak, and Jirí Ctyroký "Magnetooptic rigorous coupled wave analysis: numerical investigation of nonreciprocal waveguiding structures (Conference Presentation)", Proc. SPIE 10719, Metamaterials, Metadevices, and Metasystems 2018, 107192B (17 September 2018); https://doi.org/10.1117/12.2322950

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KEYWORDS

Magnetism

Molybdenum

Terahertz radiation

Wave propagation

3D modeling

Dielectrics

Nanostructures

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