--- _id: '50012' abstract: - lang: eng text: Silicon photonics, in conjunction with complementary metal-oxide-semiconductor (CMOS) fabrication, has greatly enhanced the development of integrated optical phased arrays. This facilitates a dynamic control of light in a compact form factor that enables the synthesis of arbitrary complex wavefronts in the infrared spectrum. We numerically demonstrate a large-scale two-dimensional silicon-based optical phased array (OPA) composed of nanoantennas with circular gratings that are balanced in power and aligned in phase, required for producing elegant radiation patterns in the far-field. For a wavelength of 1.55 μm, we optimize two antennas for the OPA exhibiting an upward radiation efficiency as high as 90%, with almost 6.8% of optical power concentrated in the field of view. Additionally, we believe that the proposed OPAs can be easily fabricated and would have the ability to generate complex holographic images, rendering them an attractive candidate for a wide range of applications like LiDAR sensors, optical trapping, optogenetic stimulation, and augmented-reality displays. author: - first_name: Henna full_name: Farheen, Henna last_name: Farheen - first_name: Andreas full_name: Strauch, Andreas last_name: Strauch - first_name: J. Christoph full_name: Scheytt, J. Christoph id: '37144' last_name: Scheytt orcid: '0000-0002-5950-6618 ' - first_name: Viktor full_name: Myroshnychenko, Viktor id: '46371' last_name: Myroshnychenko - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: Farheen H, Strauch A, Scheytt JC, Myroshnychenko V, Förstner J. Optimized, Highly Efficient Silicon Antennas for Optical Phased Arrays. Photonics and Nanostructures - Fundamentals and Applications. 2023;58:101207. doi:10.1016/j.photonics.2023.101207 apa: Farheen, H., Strauch, A., Scheytt, J. C., Myroshnychenko, V., & Förstner, J. (2023). Optimized, Highly Efficient Silicon Antennas for Optical Phased Arrays. Photonics and Nanostructures - Fundamentals and Applications, 58, 101207. https://doi.org/10.1016/j.photonics.2023.101207 bibtex: '@article{Farheen_Strauch_Scheytt_Myroshnychenko_Förstner_2023, title={Optimized, Highly Efficient Silicon Antennas for Optical Phased Arrays}, volume={58}, DOI={10.1016/j.photonics.2023.101207}, journal={Photonics and Nanostructures - Fundamentals and Applications}, publisher={Elsevier BV}, author={Farheen, Henna and Strauch, Andreas and Scheytt, J. Christoph and Myroshnychenko, Viktor and Förstner, Jens}, year={2023}, pages={101207} }' chicago: 'Farheen, Henna, Andreas Strauch, J. Christoph Scheytt, Viktor Myroshnychenko, and Jens Förstner. “Optimized, Highly Efficient Silicon Antennas for Optical Phased Arrays.” Photonics and Nanostructures - Fundamentals and Applications 58 (2023): 101207. https://doi.org/10.1016/j.photonics.2023.101207.' ieee: 'H. Farheen, A. Strauch, J. C. Scheytt, V. Myroshnychenko, and J. Förstner, “Optimized, Highly Efficient Silicon Antennas for Optical Phased Arrays,” Photonics and Nanostructures - Fundamentals and Applications, vol. 58, p. 101207, 2023, doi: 10.1016/j.photonics.2023.101207.' mla: Farheen, Henna, et al. “Optimized, Highly Efficient Silicon Antennas for Optical Phased Arrays.” Photonics and Nanostructures - Fundamentals and Applications, vol. 58, Elsevier BV, 2023, p. 101207, doi:10.1016/j.photonics.2023.101207. short: H. Farheen, A. Strauch, J.C. Scheytt, V. Myroshnychenko, J. Förstner, Photonics and Nanostructures - Fundamentals and Applications 58 (2023) 101207. date_created: 2023-12-21T09:30:03Z date_updated: 2023-12-21T09:48:39Z ddc: - '530' department: - _id: '61' - _id: '230' - _id: '429' - _id: '58' doi: 10.1016/j.photonics.2023.101207 file: - access_level: open_access content_type: application/pdf creator: fossie date_created: 2023-12-21T09:34:17Z date_updated: 2023-12-21T09:34:17Z file_id: '50013' file_name: 2ß23-12 Farheen - PNFA - Optimized, highly efficient silicon antennas for optical phased arrays.pdf file_size: 3339442 relation: main_file file_date_updated: 2023-12-21T09:34:17Z has_accepted_license: '1' intvolume: ' 58' keyword: - tet_topic_opticalantenna language: - iso: eng oa: '1' page: '101207' project: - _id: '266' grant_number: PROFILNRW-2020-067 name: 'PhoQC: PhoQC: Photonisches Quantencomputing' - _id: '167' grant_number: '231447078' name: 'TRR 142 - B06: TRR 142 - Ultraschnelle kohärente opto-elektronische Kontrolle eines photonischen Quantensystems (B06*)' - _id: '55' name: 'TRR 142 - B: TRR 142 - Project Area B' - _id: '52' name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing' publication: Photonics and Nanostructures - Fundamentals and Applications publication_identifier: issn: - 1569-4410 publication_status: published publisher: Elsevier BV related_material: link: - relation: research_data url: https://doi.org/10.5281/zenodo.10044122 status: public title: Optimized, Highly Efficient Silicon Antennas for Optical Phased Arrays type: journal_article user_id: '158' volume: 58 year: '2023' ... --- _id: '43052' abstract: - lang: eng text: We demonstrate a large-scale two dimensional silicon-based optical phased array (OPA) composed of nanoantennas with circular gratings that are balanced in power and aligned in phase, required for producing desired radiation patterns in the far-field. The OPAs are numerically optimized to have an upward efficiency of up to 90%, targeting radiation concentration mainly in the field of view. We envision that our OPAs have the ability of generating complex holographic images, rendering them an attractive candidate for a wide range of applications like LiDAR sensors, optical trapping, optogenetic stimulation and augmented-reality displays. author: - first_name: Henna full_name: Farheen, Henna last_name: Farheen - first_name: Andreas full_name: Strauch, Andreas last_name: Strauch - first_name: J. Christoph full_name: Scheytt, J. Christoph id: '37144' last_name: Scheytt orcid: https://orcid.org/0000-0002-5950-6618 - first_name: Viktor full_name: Myroshnychenko, Viktor id: '46371' last_name: Myroshnychenko - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: 'Farheen H, Strauch A, Scheytt JC, Myroshnychenko V, Förstner J. Optimized silicon antennas for optical phased arrays. In: García-Blanco SM, Cheben P, eds. Integrated Optics: Devices, Materials, and Technologies XXVII. SPIE; 2023:124241D. doi:10.1117/12.2658716' apa: 'Farheen, H., Strauch, A., Scheytt, J. C., Myroshnychenko, V., & Förstner, J. (2023). Optimized silicon antennas for optical phased arrays. In S. M. García-Blanco & P. Cheben (Eds.), Integrated Optics: Devices, Materials, and Technologies XXVII (p. 124241D). SPIE. https://doi.org/10.1117/12.2658716' bibtex: '@inproceedings{Farheen_Strauch_Scheytt_Myroshnychenko_Förstner_2023, title={Optimized silicon antennas for optical phased arrays}, DOI={10.1117/12.2658716}, booktitle={Integrated Optics: Devices, Materials, and Technologies XXVII}, publisher={SPIE}, author={Farheen, Henna and Strauch, Andreas and Scheytt, J. Christoph and Myroshnychenko, Viktor and Förstner, Jens}, editor={García-Blanco, Sonia M. and Cheben, Pavel}, year={2023}, pages={124241D} }' chicago: 'Farheen, Henna, Andreas Strauch, J. Christoph Scheytt, Viktor Myroshnychenko, and Jens Förstner. “Optimized Silicon Antennas for Optical Phased Arrays.” In Integrated Optics: Devices, Materials, and Technologies XXVII, edited by Sonia M. García-Blanco and Pavel Cheben, 124241D. SPIE, 2023. https://doi.org/10.1117/12.2658716.' ieee: 'H. Farheen, A. Strauch, J. C. Scheytt, V. Myroshnychenko, and J. Förstner, “Optimized silicon antennas for optical phased arrays,” in Integrated Optics: Devices, Materials, and Technologies XXVII, 2023, p. 124241D, doi: 10.1117/12.2658716.' mla: 'Farheen, Henna, et al. “Optimized Silicon Antennas for Optical Phased Arrays.” Integrated Optics: Devices, Materials, and Technologies XXVII, edited by Sonia M. García-Blanco and Pavel Cheben, SPIE, 2023, p. 124241D, doi:10.1117/12.2658716.' short: 'H. Farheen, A. Strauch, J.C. Scheytt, V. Myroshnychenko, J. Förstner, in: S.M. García-Blanco, P. Cheben (Eds.), Integrated Optics: Devices, Materials, and Technologies XXVII, SPIE, 2023, p. 124241D.' date_created: 2023-03-21T12:35:18Z date_updated: 2023-03-22T20:53:50Z ddc: - '530' department: - _id: '61' - _id: '230' - _id: '429' doi: 10.1117/12.2658716 editor: - first_name: Sonia M. full_name: García-Blanco, Sonia M. last_name: García-Blanco - first_name: Pavel full_name: Cheben, Pavel last_name: Cheben file: - access_level: request content_type: application/pdf creator: fossie date_created: 2023-03-22T07:41:49Z date_updated: 2023-03-22T20:53:11Z file_id: '43055' file_name: 2023-01 Poster Photonics West Henna OPA_A0.pdf file_size: 1747396 relation: main_file file_date_updated: 2023-03-22T20:53:11Z has_accepted_license: '1' keyword: - tet_topic_opticalantenna language: - iso: eng page: '124241D ' publication: 'Integrated Optics: Devices, Materials, and Technologies XXVII' publication_status: published publisher: SPIE status: public title: Optimized silicon antennas for optical phased arrays type: conference user_id: '14931' year: '2023' ... --- _id: '43051' abstract: - lang: eng text: We demonstrate the numerical and experimental realization of optimized optical traveling-wave antennas made of low-loss dielectric materials. These antennas exhibit highly directive radiation patterns and our studies reveal that this nature comes from two dominant guided TE modes excited in the waveguide-like director of the antenna, in addition to the leaky modes. The optimized antennas possess a broadband nature and have a nearunity radiation efficiency at an operational wavelength of 780 nm. Compared to the previously studied plasmonic antennas for photon emission, our all-dielectric approach demonstrates a new class of highly directional, low-loss, and broadband optical antennas. author: - first_name: Henna full_name: Farheen, Henna last_name: Farheen - first_name: Lok-Yee full_name: Yan, Lok-Yee last_name: Yan - first_name: Till full_name: Leuteritz, Till last_name: Leuteritz - first_name: Siqi full_name: Qiao, Siqi last_name: Qiao - first_name: Florian full_name: Spreyer, Florian last_name: Spreyer - first_name: Christian full_name: Schlickriede, Christian last_name: Schlickriede - first_name: Viktor full_name: Quiring, Viktor last_name: Quiring - first_name: Christof full_name: Eigner, Christof last_name: Eigner - first_name: Christine full_name: Silberhorn, Christine id: '26263' last_name: Silberhorn - first_name: Thomas full_name: Zentgraf, Thomas id: '30525' last_name: Zentgraf orcid: 0000-0002-8662-1101 - first_name: Stefan full_name: Linden, Stefan last_name: Linden - first_name: Viktor full_name: Myroshnychenko, Viktor id: '46371' last_name: Myroshnychenko - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: 'Farheen H, Yan L-Y, Leuteritz T, et al. Tailoring the directive nature of optical waveguide antennas. In: García-Blanco SM, Cheben P, eds. Integrated Optics: Devices, Materials, and Technologies XXVII. SPIE; 2023:124241E. doi:10.1117/12.2658921' apa: 'Farheen, H., Yan, L.-Y., Leuteritz, T., Qiao, S., Spreyer, F., Schlickriede, C., Quiring, V., Eigner, C., Silberhorn, C., Zentgraf, T., Linden, S., Myroshnychenko, V., & Förstner, J. (2023). Tailoring the directive nature of optical waveguide antennas. In S. M. García-Blanco & P. Cheben (Eds.), Integrated Optics: Devices, Materials, and Technologies XXVII (p. 124241E). SPIE. https://doi.org/10.1117/12.2658921' bibtex: '@inproceedings{Farheen_Yan_Leuteritz_Qiao_Spreyer_Schlickriede_Quiring_Eigner_Silberhorn_Zentgraf_et al._2023, title={Tailoring the directive nature of optical waveguide antennas}, DOI={10.1117/12.2658921}, booktitle={Integrated Optics: Devices, Materials, and Technologies XXVII}, publisher={SPIE}, author={Farheen, Henna and Yan, Lok-Yee and Leuteritz, Till and Qiao, Siqi and Spreyer, Florian and Schlickriede, Christian and Quiring, Viktor and Eigner, Christof and Silberhorn, Christine and Zentgraf, Thomas and et al.}, editor={García-Blanco, Sonia M. and Cheben, Pavel}, year={2023}, pages={124241E} }' chicago: 'Farheen, Henna, Lok-Yee Yan, Till Leuteritz, Siqi Qiao, Florian Spreyer, Christian Schlickriede, Viktor Quiring, et al. “Tailoring the Directive Nature of Optical Waveguide Antennas.” In Integrated Optics: Devices, Materials, and Technologies XXVII, edited by Sonia M. García-Blanco and Pavel Cheben, 124241E. SPIE, 2023. https://doi.org/10.1117/12.2658921.' ieee: 'H. Farheen et al., “Tailoring the directive nature of optical waveguide antennas,” in Integrated Optics: Devices, Materials, and Technologies XXVII, 2023, p. 124241E, doi: 10.1117/12.2658921.' mla: 'Farheen, Henna, et al. “Tailoring the Directive Nature of Optical Waveguide Antennas.” Integrated Optics: Devices, Materials, and Technologies XXVII, edited by Sonia M. García-Blanco and Pavel Cheben, SPIE, 2023, p. 124241E, doi:10.1117/12.2658921.' short: 'H. Farheen, L.-Y. Yan, T. Leuteritz, S. Qiao, F. Spreyer, C. Schlickriede, V. Quiring, C. Eigner, C. Silberhorn, T. Zentgraf, S. Linden, V. Myroshnychenko, J. Förstner, in: S.M. García-Blanco, P. Cheben (Eds.), Integrated Optics: Devices, Materials, and Technologies XXVII, SPIE, 2023, p. 124241E.' date_created: 2023-03-21T12:28:31Z date_updated: 2023-03-22T09:26:25Z ddc: - '530' department: - _id: '61' - _id: '230' - _id: '429' doi: 10.1117/12.2658921 editor: - first_name: Sonia M. full_name: García-Blanco, Sonia M. last_name: García-Blanco - first_name: Pavel full_name: Cheben, Pavel last_name: Cheben file: - access_level: local content_type: application/pdf creator: fossie date_created: 2023-03-22T09:25:57Z date_updated: 2023-03-22T09:25:57Z file_id: '43062' file_name: 2023-01 Poster Photonics West Henna OWA_A0.pdf file_size: 1426599 relation: main_file file_date_updated: 2023-03-22T09:25:57Z has_accepted_license: '1' keyword: - tet_topic_opticalantenna language: - iso: eng page: 124241E publication: 'Integrated Optics: Devices, Materials, and Technologies XXVII' publication_status: published publisher: SPIE status: public title: Tailoring the directive nature of optical waveguide antennas type: conference user_id: '158' year: '2023' ... --- _id: '31329' abstract: - lang: eng text: Highly directive antennas with the ability of shaping radiation patterns in desired directions are essential for efficient on-chip optical communication with reduced cross talk. In this paper, we design and optimize three distinct broadband traveling-wave tantalum pentoxide antennas exhibiting highly directional characteristics. Our antennas contain a director and reflector deposited on a glass substrate, which are excited by a dipole emitter placed in the feed gap between the two elements. Full-wave simulations in conjunction with global optimization provide structures with an enhanced linear directivity as high as 119 radiating in the substrate. The high directivity is a result of the interplay between two dominant TE modes and the leaky modes present in the antenna director. Furthermore, these low-loss dielectric antennas exhibit a near-unity radiation efficiency at the operational wavelength of 780 nm and maintain a broad bandwidth. Our numerical results are in good agreement with experimental measurements from the optimized antennas fabricated using a two-step electron-beam lithography, revealing the highly directive nature of our structures. We envision that our antenna designs can be conveniently adapted to other dielectric materials and prove instrumental for inter-chip optical communications and other on-chip applications. author: - first_name: Henna full_name: Farheen, Henna last_name: Farheen - first_name: Lok-Yee full_name: Yan, Lok-Yee last_name: Yan - first_name: Viktor full_name: Quiring, Viktor last_name: Quiring - first_name: Christof full_name: Eigner, Christof id: '13244' last_name: Eigner orcid: https://orcid.org/0000-0002-5693-3083 - first_name: Thomas full_name: Zentgraf, Thomas id: '30525' last_name: Zentgraf orcid: 0000-0002-8662-1101 - first_name: Stefan full_name: Linden, Stefan last_name: Linden - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: Viktor full_name: Myroshnychenko, Viktor id: '46371' last_name: Myroshnychenko citation: ama: Farheen H, Yan L-Y, Quiring V, et al. Broadband optical Ta2O5 antennas for directional emission of light. Optics Express. 2022;30(11):19288. doi:10.1364/oe.455815 apa: Farheen, H., Yan, L.-Y., Quiring, V., Eigner, C., Zentgraf, T., Linden, S., Förstner, J., & Myroshnychenko, V. (2022). Broadband optical Ta2O5 antennas for directional emission of light. Optics Express, 30(11), 19288. https://doi.org/10.1364/oe.455815 bibtex: '@article{Farheen_Yan_Quiring_Eigner_Zentgraf_Linden_Förstner_Myroshnychenko_2022, title={Broadband optical Ta2O5 antennas for directional emission of light}, volume={30}, DOI={10.1364/oe.455815}, number={11}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Farheen, Henna and Yan, Lok-Yee and Quiring, Viktor and Eigner, Christof and Zentgraf, Thomas and Linden, Stefan and Förstner, Jens and Myroshnychenko, Viktor}, year={2022}, pages={19288} }' chicago: 'Farheen, Henna, Lok-Yee Yan, Viktor Quiring, Christof Eigner, Thomas Zentgraf, Stefan Linden, Jens Förstner, and Viktor Myroshnychenko. “Broadband Optical Ta2O5 Antennas for Directional Emission of Light.” Optics Express 30, no. 11 (2022): 19288. https://doi.org/10.1364/oe.455815.' ieee: 'H. Farheen et al., “Broadband optical Ta2O5 antennas for directional emission of light,” Optics Express, vol. 30, no. 11, p. 19288, 2022, doi: 10.1364/oe.455815.' mla: Farheen, Henna, et al. “Broadband Optical Ta2O5 Antennas for Directional Emission of Light.” Optics Express, vol. 30, no. 11, Optica Publishing Group, 2022, p. 19288, doi:10.1364/oe.455815. short: H. Farheen, L.-Y. Yan, V. Quiring, C. Eigner, T. Zentgraf, S. Linden, J. Förstner, V. Myroshnychenko, Optics Express 30 (2022) 19288. date_created: 2022-05-18T16:39:17Z date_updated: 2022-05-18T20:01:46Z department: - _id: '61' - _id: '230' - _id: '429' doi: 10.1364/oe.455815 intvolume: ' 30' issue: '11' keyword: - tet_topic_opticalantenna language: - iso: eng page: '19288' project: - _id: '75' name: 'TRR 142 - C5: TRR 142 - Subproject C5' - _id: '52' name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing' publication: Optics Express publication_identifier: issn: - 1094-4087 publication_status: published publisher: Optica Publishing Group status: public title: Broadband optical Ta2O5 antennas for directional emission of light type: journal_article user_id: '158' volume: 30 year: '2022' ... --- _id: '28413' abstract: - lang: eng text: Optical traveling wave antennas offer unique opportunities to control and selectively guide light into a specific direction, which renders them excellent candidates for optical communication and sensing. These applications require state-of-the-art engineering to reach optimized functionalities such as high directivity and radiation efficiency, low sidelobe levels, broadband and tunable capabilities, and compact design. In this work, we report on the numerical optimization of the directivity of optical traveling wave antennas made from low-loss dielectric materials using full-wave numerical simulations in conjunction with the particle swarm optimization algorithm. The antennas are composed of a reflector and a director deposited on a glass substrate, and an emitter placed in the feed gap between them serves as an internal source of excitation. In particular, we analyze antennas with rectangular- and horn-shaped directors made of either hafnium dioxide or silicon. The optimized antennas produce highly directional emissions due to the presence of two dominant guided TE modes in the director in addition to leaky modes. These guided modes dominate the far-field emission pattern and govern the direction of the main lobe emission, which predominately originates from the end facet of the director. Our work also provides a comprehensive analysis of the modes, radiation patterns, parametric influences, and bandwidths of the antennas, which highlights their robust nature. author: - first_name: Henna full_name: Farheen, Henna last_name: Farheen - first_name: Till full_name: Leuteritz, Till last_name: Leuteritz - first_name: Stefan full_name: Linden, Stefan last_name: Linden - first_name: Viktor full_name: Myroshnychenko, Viktor id: '46371' last_name: Myroshnychenko - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: Farheen H, Leuteritz T, Linden S, Myroshnychenko V, Förstner J. Optimization of optical waveguide antennas for directive emission of light. Journal of the Optical Society of America B. 2022;39(1):83. doi:10.1364/josab.438514 apa: Farheen, H., Leuteritz, T., Linden, S., Myroshnychenko, V., & Förstner, J. (2022). Optimization of optical waveguide antennas for directive emission of light. Journal of the Optical Society of America B, 39(1), 83. https://doi.org/10.1364/josab.438514 bibtex: '@article{Farheen_Leuteritz_Linden_Myroshnychenko_Förstner_2022, title={Optimization of optical waveguide antennas for directive emission of light}, volume={39}, DOI={10.1364/josab.438514}, number={1}, journal={Journal of the Optical Society of America B}, author={Farheen, Henna and Leuteritz, Till and Linden, Stefan and Myroshnychenko, Viktor and Förstner, Jens}, year={2022}, pages={83} }' chicago: 'Farheen, Henna, Till Leuteritz, Stefan Linden, Viktor Myroshnychenko, and Jens Förstner. “Optimization of Optical Waveguide Antennas for Directive Emission of Light.” Journal of the Optical Society of America B 39, no. 1 (2022): 83. https://doi.org/10.1364/josab.438514.' ieee: 'H. Farheen, T. Leuteritz, S. Linden, V. Myroshnychenko, and J. Förstner, “Optimization of optical waveguide antennas for directive emission of light,” Journal of the Optical Society of America B, vol. 39, no. 1, p. 83, 2022, doi: 10.1364/josab.438514.' mla: Farheen, Henna, et al. “Optimization of Optical Waveguide Antennas for Directive Emission of Light.” Journal of the Optical Society of America B, vol. 39, no. 1, 2022, p. 83, doi:10.1364/josab.438514. short: H. Farheen, T. Leuteritz, S. Linden, V. Myroshnychenko, J. Förstner, Journal of the Optical Society of America B 39 (2022) 83. date_created: 2021-12-08T07:14:39Z date_updated: 2022-01-06T06:58:04Z ddc: - '530' department: - _id: '61' - _id: '230' - _id: '429' doi: 10.1364/josab.438514 file: - access_level: local content_type: application/pdf creator: fossie date_created: 2021-12-08T08:26:57Z date_updated: 2021-12-08T08:26:57Z embargo: 2022-12-08 embargo_to: open_access file_id: '28417' file_name: 2021-12 Farheen - JOSA B - Optimization of optical nanoantennas.pdf file_size: 14029741 relation: main_file - access_level: open_access content_type: application/pdf creator: fossie date_created: 2021-12-08T08:29:49Z date_updated: 2021-12-08T08:29:49Z file_id: '28418' file_name: 2021-12 Farheen - JOSA B - Optimization of optical nanoantennas SUPPLEMENTARY MATERIAL.pdf file_size: 655495 relation: supplementary_material file_date_updated: 2021-12-08T08:29:49Z has_accepted_license: '1' intvolume: ' 39' issue: '1' keyword: - tet_topic_opticalantenna language: - iso: eng oa: '1' page: '83' project: - _id: '53' name: TRR 142 - _id: '56' name: TRR 142 - Project Area C - _id: '75' name: TRR 142 - Subproject C5 - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing publication: Journal of the Optical Society of America B publication_identifier: issn: - 0740-3224 - 1520-8540 publication_status: published status: public title: Optimization of optical waveguide antennas for directive emission of light type: journal_article user_id: '158' volume: 39 year: '2022' ... --- _id: '21821' abstract: - lang: eng text: 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. article_number: '14694' author: - first_name: T. full_name: Leuteritz, T. last_name: Leuteritz - first_name: H. full_name: Farheen, H. last_name: Farheen - first_name: S. full_name: Qiao, S. last_name: Qiao - first_name: F. full_name: Spreyer, F. last_name: Spreyer - first_name: Christian full_name: Schlickriede, Christian id: '59792' last_name: Schlickriede - first_name: Thomas full_name: Zentgraf, Thomas id: '30525' last_name: Zentgraf orcid: 0000-0002-8662-1101 - first_name: Viktor full_name: Myroshnychenko, Viktor id: '46371' last_name: Myroshnychenko - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: S. full_name: Linden, S. last_name: Linden citation: ama: Leuteritz T, Farheen H, Qiao S, et al. Dielectric travelling wave antennas for directional light emission. Optics Express. 2021;29(10). doi:10.1364/oe.422984 apa: Leuteritz, T., Farheen, H., Qiao, S., Spreyer, F., Schlickriede, C., Zentgraf, T., … Linden, S. (2021). Dielectric travelling wave antennas for directional light emission. Optics Express, 29(10). https://doi.org/10.1364/oe.422984 bibtex: '@article{Leuteritz_Farheen_Qiao_Spreyer_Schlickriede_Zentgraf_Myroshnychenko_Förstner_Linden_2021, title={Dielectric travelling wave antennas for directional light emission}, volume={29}, DOI={10.1364/oe.422984}, number={1014694}, journal={Optics Express}, author={Leuteritz, T. and Farheen, H. and Qiao, S. and Spreyer, F. and Schlickriede, Christian and Zentgraf, Thomas and Myroshnychenko, Viktor and Förstner, Jens and Linden, S.}, year={2021} }' chicago: Leuteritz, T., H. Farheen, S. Qiao, F. Spreyer, Christian Schlickriede, Thomas Zentgraf, Viktor Myroshnychenko, Jens Förstner, and S. Linden. “Dielectric Travelling Wave Antennas for Directional Light Emission.” Optics Express 29, no. 10 (2021). https://doi.org/10.1364/oe.422984. ieee: T. Leuteritz et al., “Dielectric travelling wave antennas for directional light emission,” Optics Express, vol. 29, no. 10, 2021. mla: Leuteritz, T., et al. “Dielectric Travelling Wave Antennas for Directional Light Emission.” Optics Express, vol. 29, no. 10, 14694, 2021, doi:10.1364/oe.422984. short: T. Leuteritz, H. Farheen, S. Qiao, F. Spreyer, C. Schlickriede, T. Zentgraf, V. Myroshnychenko, J. Förstner, S. Linden, Optics Express 29 (2021). date_created: 2021-04-29T06:56:40Z date_updated: 2022-01-06T06:55:17Z ddc: - '530' department: - _id: '61' - _id: '230' - _id: '429' - _id: '15' - _id: '289' doi: 10.1364/oe.422984 file: - access_level: closed content_type: application/pdf creator: fossie date_created: 2021-04-29T06:59:39Z date_updated: 2021-04-29T06:59:39Z file_id: '21822' file_name: 2021-04 Leuteritz - Optics Express - Dielectric travelling wave antennas.pdf file_size: 7464073 relation: main_file success: 1 file_date_updated: 2021-04-29T06:59:39Z has_accepted_license: '1' intvolume: ' 29' issue: '10' keyword: - tet_topic_opticalantenna language: - iso: eng project: - _id: '53' name: TRR 142 - _id: '56' name: TRR 142 - Project Area C - _id: '75' name: TRR 142 - Subproject C5 publication: Optics Express publication_identifier: issn: - 1094-4087 publication_status: published status: public title: Dielectric travelling wave antennas for directional light emission type: journal_article user_id: '30525' volume: 29 year: '2021' ... --- _id: '680' author: - first_name: Manuel full_name: Peter, Manuel last_name: Peter - first_name: Andre full_name: Hildebrandt, Andre last_name: Hildebrandt - first_name: Christian full_name: Schlickriede, Christian id: '59792' last_name: Schlickriede - first_name: Kimia full_name: Gharib, Kimia last_name: Gharib - first_name: Thomas full_name: Zentgraf, Thomas id: '30525' last_name: Zentgraf orcid: 0000-0002-8662-1101 - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: Stefan full_name: Linden, Stefan last_name: Linden citation: ama: Peter M, Hildebrandt A, Schlickriede C, et al. Directional Emission from Dielectric Leaky-Wave Nanoantennas. Nano Letters. 2017;17(7):4178-4183. doi:10.1021/acs.nanolett.7b00966 apa: Peter, M., Hildebrandt, A., Schlickriede, C., Gharib, K., Zentgraf, T., Förstner, J., & Linden, S. (2017). Directional Emission from Dielectric Leaky-Wave Nanoantennas. Nano Letters, 17(7), 4178–4183. https://doi.org/10.1021/acs.nanolett.7b00966 bibtex: '@article{Peter_Hildebrandt_Schlickriede_Gharib_Zentgraf_Förstner_Linden_2017, title={Directional Emission from Dielectric Leaky-Wave Nanoantennas}, volume={17}, DOI={10.1021/acs.nanolett.7b00966}, number={7}, journal={Nano Letters}, publisher={American Chemical Society (ACS)}, author={Peter, Manuel and Hildebrandt, Andre and Schlickriede, Christian and Gharib, Kimia and Zentgraf, Thomas and Förstner, Jens and Linden, Stefan}, year={2017}, pages={4178–4183} }' chicago: 'Peter, Manuel, Andre Hildebrandt, Christian Schlickriede, Kimia Gharib, Thomas Zentgraf, Jens Förstner, and Stefan Linden. “Directional Emission from Dielectric Leaky-Wave Nanoantennas.” Nano Letters 17, no. 7 (2017): 4178–83. https://doi.org/10.1021/acs.nanolett.7b00966.' ieee: M. Peter et al., “Directional Emission from Dielectric Leaky-Wave Nanoantennas,” Nano Letters, vol. 17, no. 7, pp. 4178–4183, 2017. mla: Peter, Manuel, et al. “Directional Emission from Dielectric Leaky-Wave Nanoantennas.” Nano Letters, vol. 17, no. 7, American Chemical Society (ACS), 2017, pp. 4178–83, doi:10.1021/acs.nanolett.7b00966. short: M. Peter, A. Hildebrandt, C. Schlickriede, K. Gharib, T. Zentgraf, J. Förstner, S. Linden, Nano Letters 17 (2017) 4178–4183. date_created: 2017-11-13T07:36:01Z date_updated: 2022-01-06T07:03:20Z ddc: - '530' department: - _id: '61' - _id: '289' doi: 10.1021/acs.nanolett.7b00966 file: - access_level: open_access content_type: application/pdf creator: fossie date_created: 2018-08-16T08:07:31Z date_updated: 2018-08-21T10:41:58Z file_id: '3917' file_name: 2017-08 Peter - Nano Letters - Directional Emission from Dielectric Leaky-Wave Antennas.pdf file_size: 3398275 relation: main_file file_date_updated: 2018-08-21T10:41:58Z has_accepted_license: '1' intvolume: ' 17' issue: '7' keyword: - tet_topic_opticalantenna language: - iso: eng oa: '1' page: 4178-4183 project: - _id: '53' name: TRR 142 - _id: '56' name: TRR 142 - Project Area C - _id: '74' name: TRR 142 - Subproject C4 publication: Nano Letters publication_identifier: issn: - 1530-6984 - 1530-6992 publication_status: published publisher: American Chemical Society (ACS) status: public title: Directional Emission from Dielectric Leaky-Wave Nanoantennas type: journal_article urn: '6808' user_id: '158' volume: 17 year: '2017' ... --- _id: '35' author: - first_name: Heiko full_name: Linnenbank, Heiko last_name: Linnenbank - first_name: Yevgen full_name: Grynko, Yevgen id: '26059' last_name: Grynko - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: Stefan full_name: Linden, Stefan last_name: Linden citation: ama: 'Linnenbank H, Grynko Y, Förstner J, Linden S. Second harmonic generation spectroscopy on hybrid plasmonic/dielectric nanoantennas. Light: Science & Applications. 2016;5(1):e16013. doi:10.1038/lsa.2016.13' apa: 'Linnenbank, H., Grynko, Y., Förstner, J., & Linden, S. (2016). Second harmonic generation spectroscopy on hybrid plasmonic/dielectric nanoantennas. Light: Science & Applications, 5(1), e16013. https://doi.org/10.1038/lsa.2016.13' bibtex: '@article{Linnenbank_Grynko_Förstner_Linden_2016, title={Second harmonic generation spectroscopy on hybrid plasmonic/dielectric nanoantennas}, volume={5}, DOI={10.1038/lsa.2016.13}, number={1}, journal={Light: Science & Applications}, publisher={Springer Nature}, author={Linnenbank, Heiko and Grynko, Yevgen and Förstner, Jens and Linden, Stefan}, year={2016}, pages={e16013} }' chicago: 'Linnenbank, Heiko, Yevgen Grynko, Jens Förstner, and Stefan Linden. “Second Harmonic Generation Spectroscopy on Hybrid Plasmonic/Dielectric Nanoantennas.” Light: Science & Applications 5, no. 1 (2016): e16013. https://doi.org/10.1038/lsa.2016.13.' ieee: 'H. Linnenbank, Y. Grynko, J. Förstner, and S. Linden, “Second harmonic generation spectroscopy on hybrid plasmonic/dielectric nanoantennas,” Light: Science & Applications, vol. 5, no. 1, p. e16013, 2016.' mla: 'Linnenbank, Heiko, et al. “Second Harmonic Generation Spectroscopy on Hybrid Plasmonic/Dielectric Nanoantennas.” Light: Science & Applications, vol. 5, no. 1, Springer Nature, 2016, p. e16013, doi:10.1038/lsa.2016.13.' short: 'H. Linnenbank, Y. Grynko, J. Förstner, S. Linden, Light: Science & Applications 5 (2016) e16013.' date_created: 2017-07-26T15:26:04Z date_updated: 2022-01-06T06:59:19Z ddc: - '530' department: - _id: '61' doi: 10.1038/lsa.2016.13 file: - access_level: open_access content_type: application/pdf creator: fossie date_created: 2018-08-16T08:13:40Z date_updated: 2018-08-21T10:43:10Z file_id: '3918' file_name: 2016-01 Linnenbank - Light Science and Applications (published version).pdf file_size: 1442154 relation: main_file file_date_updated: 2018-08-21T10:43:10Z has_accepted_license: '1' intvolume: ' 5' issue: '1' keyword: - tet_topic_opticalantenna - tet_topic_shg language: - iso: eng oa: '1' page: e16013 publication: 'Light: Science & Applications' publication_identifier: issn: - 2047-7538 publication_status: published publisher: Springer Nature status: public title: Second harmonic generation spectroscopy on hybrid plasmonic/dielectric nanoantennas type: journal_article urn: '352' user_id: '158' volume: 5 year: '2016' ... --- _id: '3939' abstract: - lang: eng text: "Optical and infrared antennas provide a promising way to couple photons in and out of nanoscale structures. As\r\ncounterpart to conventional radio antennas, they are able to increase optical felds in sub-wavelength volumes,\r\nto enhance excitation and emission of quantum emitters or to direct light, radiated by quantum emitters. The\r\ndirected emission of these antennas has been mainly pursued by surface plasmon based devices, e.g. Yagi-Uda\r\nlike antennas, which are rather complicated due to the coupling of several metallic particles. Also, like all metallic\r\nstructures in optical or infrared regime, these devices are very sensitive to fabrication tolerances and are affected\r\nby strong losses. It has been shown recently, that such directed emission can be accomplished by dielectric\r\nmaterials as well.\r\nIn this paper we present an optimization of nanoscopic antennas in the near infrared regime starting from a\r\nmetallic Yagi-Uda structure. The optimization is done via a particle-swarm algorithm, using full time domain\r\nfinite integration simulations to obtain the characteristics of the investigated structure, also taking into account\r\nsubstrates. Furthermore we present a dielectric antenna, which performs even better, due to the lack of losses\r\nby an appropriate choice of the dielectric material. These antennas are robust concerning fabrication tolerances\r\nand can be realized with different materials for both the antenna and the substrate, without using high index\r\nmaterials." author: - first_name: Andre full_name: Hildebrandt, Andre last_name: Hildebrandt - first_name: Matthias full_name: Reichelt, Matthias id: '138' last_name: Reichelt - first_name: Torsten full_name: Meier, Torsten id: '344' last_name: Meier orcid: 0000-0001-8864-2072 - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: 'Hildebrandt A, Reichelt M, Meier T, Förstner J. Engineering plasmonic and dielectric directional nanoantennas. In: Betz M, Elezzabi AY, Song J-J, Tsen K-T, eds. Ultrafast Phenomena and Nanophotonics XVIII. Vol 8984. SPIE Proceedings. SPIE; 2014:89841G-8941G - 6. doi:10.1117/12.2036588' apa: Hildebrandt, A., Reichelt, M., Meier, T., & Förstner, J. (2014). Engineering plasmonic and dielectric directional nanoantennas. In M. Betz, A. Y. Elezzabi, J.-J. Song, & K.-T. Tsen (Eds.), Ultrafast Phenomena and Nanophotonics XVIII (Vol. 8984, pp. 89841G-8941G – 6). SPIE. https://doi.org/10.1117/12.2036588 bibtex: '@inproceedings{Hildebrandt_Reichelt_Meier_Förstner_2014, series={SPIE Proceedings}, title={Engineering plasmonic and dielectric directional nanoantennas}, volume={8984}, DOI={10.1117/12.2036588}, booktitle={Ultrafast Phenomena and Nanophotonics XVIII}, publisher={SPIE}, author={Hildebrandt, Andre and Reichelt, Matthias and Meier, Torsten and Förstner, Jens}, editor={Betz, Markus and Elezzabi, Abdulhakem Y. and Song, Jin-Joo and Tsen, Kong-Thon}, year={2014}, pages={89841G-8941G–6}, collection={SPIE Proceedings} }' chicago: Hildebrandt, Andre, Matthias Reichelt, Torsten Meier, and Jens Förstner. “Engineering Plasmonic and Dielectric Directional Nanoantennas.” In Ultrafast Phenomena and Nanophotonics XVIII, edited by Markus Betz, Abdulhakem Y. Elezzabi, Jin-Joo Song, and Kong-Thon Tsen, 8984:89841G-8941G – 6. SPIE Proceedings. SPIE, 2014. https://doi.org/10.1117/12.2036588. ieee: 'A. Hildebrandt, M. Reichelt, T. Meier, and J. Förstner, “Engineering plasmonic and dielectric directional nanoantennas,” in Ultrafast Phenomena and Nanophotonics XVIII, 2014, vol. 8984, pp. 89841G-8941G–6, doi: 10.1117/12.2036588.' mla: Hildebrandt, Andre, et al. “Engineering Plasmonic and Dielectric Directional Nanoantennas.” Ultrafast Phenomena and Nanophotonics XVIII, edited by Markus Betz et al., vol. 8984, SPIE, 2014, pp. 89841G-8941G – 6, doi:10.1117/12.2036588. short: 'A. Hildebrandt, M. Reichelt, T. Meier, J. Förstner, in: M. Betz, A.Y. Elezzabi, J.-J. Song, K.-T. Tsen (Eds.), Ultrafast Phenomena and Nanophotonics XVIII, SPIE, 2014, pp. 89841G-8941G–6.' date_created: 2018-08-20T10:04:52Z date_updated: 2023-04-16T22:09:25Z ddc: - '530' department: - _id: '61' - _id: '15' - _id: '293' - _id: '230' - _id: '170' doi: 10.1117/12.2036588 editor: - first_name: Markus full_name: Betz, Markus last_name: Betz - first_name: Abdulhakem Y. full_name: Elezzabi, Abdulhakem Y. last_name: Elezzabi - first_name: Jin-Joo full_name: Song, Jin-Joo last_name: Song - first_name: Kong-Thon full_name: Tsen, Kong-Thon last_name: Tsen file: - access_level: closed content_type: application/pdf creator: hclaudia date_created: 2018-08-20T10:10:25Z date_updated: 2018-08-20T10:10:25Z file_id: '3940' file_name: 2014 Hildebrandt,Reichelt,Meier,Förstner_Engineering plasmonic and dielectric directional nanoantennas_SPIE OPTO.pdf file_size: 1744539 relation: main_file success: 1 file_date_updated: 2018-08-20T10:10:25Z has_accepted_license: '1' intvolume: ' 8984' keyword: - tet_topic_opticalantenna language: - iso: eng page: 89841G-8941G-6 publication: Ultrafast Phenomena and Nanophotonics XVIII publication_status: published publisher: SPIE series_title: SPIE Proceedings status: public title: Engineering plasmonic and dielectric directional nanoantennas type: conference user_id: '49063' volume: 8984 year: '2014' ...