article published T. Leuteritz author Henna Farheen author 534440000-0001-7730-3489 S. Qiao author F. Spreyer author Christian Schlickriede author 59792 Thomas Zentgraf author 305250000-0002-8662-1101 Viktor Myroshnychenko author 46371 Jens Förstner author 1580000-0001-7059-9862 S. Linden author 61 department 230 department 429 department 15 department 289 department TRR 142 project TRR 142 - Project Area C project TRR 142 - Subproject C5 project We present a combined experimental and numerical study of the far-field emission properties of optical travelling wave antennas made from low-loss dielectric materials. The antennas considered here are composed of two simple building blocks, a director and a reflector, deposited on a glass substrate. Colloidal quantum dots placed in the feed gap between the two elements serve as internal light source. The emission profile of the antenna is mainly formed by the director while the reflector suppresses backward emission. Systematic studies of the director dimensions as well as variation of antenna material show that the effective refractive index of the director primarily governs the far-field emission pattern. Below cut off, i.e., if the director’s effective refractive index is smaller than the refractive index of the substrate, the main lobe results from leaky wave emission along the director. In contrast, if the director supports a guided mode, the emission predominately originates from the end facet of the director. https://ris.uni-paderborn.de/download/21821/21822/2021-04 Leuteritz - Optics Express - Dielectric travelling wave antennas.pdf application/pdf 2021 eng tet_topic_opticalantenna 1094-408710.1364/oe.422984 2910 Leuteritz, T., Farheen, H., Qiao, S., Spreyer, F., Schlickriede, C., Zentgraf, T., Myroshnychenko, V., Förstner, J., &#38; Linden, S. (2021). Dielectric travelling wave antennas for directional light emission. <i>Optics Express</i>, <i>29</i>(10), Article 14694. <a href="https://doi.org/10.1364/oe.422984">https://doi.org/10.1364/oe.422984</a> Leuteritz, T., et al. “Dielectric Travelling Wave Antennas for Directional Light Emission.” <i>Optics Express</i>, vol. 29, no. 10, 14694, 2021, doi:<a href="https://doi.org/10.1364/oe.422984">10.1364/oe.422984</a>. @article{Leuteritz_Farheen_Qiao_Spreyer_Schlickriede_Zentgraf_Myroshnychenko_Förstner_Linden_2021, title={Dielectric travelling wave antennas for directional light emission}, volume={29}, DOI={<a href="https://doi.org/10.1364/oe.422984">10.1364/oe.422984</a>}, number={1014694}, journal={Optics Express}, author={Leuteritz, T. and Farheen, Henna and Qiao, S. and Spreyer, F. and Schlickriede, Christian and Zentgraf, Thomas and Myroshnychenko, Viktor and Förstner, Jens and Linden, S.}, year={2021} } T. Leuteritz, H. Farheen, S. Qiao, F. Spreyer, C. Schlickriede, T. Zentgraf, V. Myroshnychenko, J. Förstner, S. Linden, Optics Express 29 (2021). Leuteritz T, Farheen H, Qiao S, et al. Dielectric travelling wave antennas for directional light emission. <i>Optics Express</i>. 2021;29(10). doi:<a href="https://doi.org/10.1364/oe.422984">10.1364/oe.422984</a> Leuteritz, T., Henna Farheen, S. Qiao, F. Spreyer, Christian Schlickriede, Thomas Zentgraf, Viktor Myroshnychenko, Jens Förstner, and S. Linden. “Dielectric Travelling Wave Antennas for Directional Light Emission.” <i>Optics Express</i> 29, no. 10 (2021). <a href="https://doi.org/10.1364/oe.422984">https://doi.org/10.1364/oe.422984</a>. T. Leuteritz <i>et al.</i>, “Dielectric travelling wave antennas for directional light emission,” <i>Optics Express</i>, vol. 29, no. 10, Art. no. 14694, 2021, doi: <a href="https://doi.org/10.1364/oe.422984">10.1364/oe.422984</a>. 218212021-04-29T06:56:40Z2024-07-22T07:45:22Z