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https://doi.org/10.15480/882.4740
Publisher DOI: | 10.1002/adom.202100785 | Title: | Control over light emission in low-refractive-index artificial materials inspired by reciprocal design | Language: | English | Authors: | Maiwald, Lukas Sommer, Timo Sidorenko, Mikhail S. Yafyasov, Ruslan R. Mustafa, Meraj E Schulz, Kai Marvin Rybin, Mikhail V. Eich, Manfred Petrov, Alexander ![]() |
Keywords: | additive technology; low-index artificial materials; low-index complete photonic bandgap; reciprocal space engineering; wave localization | Issue Date: | 4-Jan-2022 | Publisher: | Wiley-VCH | Source: | Advanced Optical Materials 10 (1): 2100785 (2022-01) | Abstract (english): | Reciprocal space engineering allows tailoring the scattering response of media with a low refractive-index contrast. Here it is shown that a quasiperiodic leveled-wave structure with well-defined reciprocal space and random real space distribution can be engineered to open a complete photonic bandgap (CPBG) for any refractive-index contrast. For these structures, an analytical estimation is derived, which predicts that there is an optimal number of Bragg peaks for any refractive-index contrast. A finite 2D or 3D CPBG is expected at this optimal number even for an arbitrarily small refractive-index contrast. Results of numerical simulations of dipole emission in 2D and 3D structures support the estimations. In 3D simulations, an emission suppression of almost 10 dB is demonstrated with a refractive index down to 1.38. The 3D structures are realized by additive manufacturing on millimeter scale for a material with a refractive index of n ≈ 1.59. Measurements confirm a strong suppression of microwave transmission in the expected frequency range. |
URI: | http://hdl.handle.net/11420/11058 | DOI: | 10.15480/882.4740 | ISSN: | 2195-1071 | Journal: | Advanced optical materials | Institute: | Optische und Elektronische Materialien E-12 | Document Type: | Article | Project: | SPP 1839: Teilprojekt "Quasi-ungeordnete Strukturen mit vollständiger photonischer Bandlücke 2D und 3D mit beliebig kleinen Brechungsindexkontrasten" Projekt DEAL |
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Advanced Optical Materials - 2021 - Maiwald - Control over Light Emission in Low%u2010Refractive%u2010Index Artificial Materials.pdf | Verlags-PDF | 1,72 MB | Adobe PDF | View/Open![]() |
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