Wel­come to the The­or­et­ic­al Elec­tric­al En­gin­eer­ing group (TET)

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Our main research interest is the theoretical description of photonic and optoelectronic systems like optical nanoantennas, dielectric waveguides, photonic crystals, metamaterials, plasmonic systems, or biological photonic structures. Our speciality is the combinations of advanced material models with state-of-the-art numerical methods for the simulation of electromagnetic fields. For students we offer a wide range of courses ranging from the theoretical foundation of electromagnetism and numerics to advanced courses on field simulation and photonics. 

Research: Topics, Publications, Team

Teaching: Course Portfolio, Current Courses, Current Projects

An­nounce­ments/News

9.07.24: TET pro­ject present­a­tion “Eval­u­ation of the In­flu­ence of the Near-Field Scan­ner En­vir­on­ment”

Dear colleagues, dear students, on Tuesday, the 9th of July, the following project presentation will take place in the TET group: Title: “Evaluation of the Influence of the Near-Field Scanner Environment” Lecturers: Amit Ghosh and Naimur Rahman Language: English Time: 14:00 Location: P1.6.17.1 We welcome everyone to join us!

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5.06.24: Mas­ter thes­is present­a­tion on "Design and fab­ric­a­tion of il­lu­min­a­tion op­tics for an en­do­scop­ic light source"

Dear all, on Wednesday, 5th of June, at 9:00 a.m., we would like to invite you to the Master thesis presentation of Osama Afzal about "Design and fabrication of illumination optics for an endoscopic light source" (in cooperation with Printoptics company) The presentation can be followed on zoom by this link. (meeting-id: 209 369 2542, code: 187117)  We appreciate your interest!

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New Pub­lic­a­tion: From Swiss-cheese to dis­crete fer­ro­elec­tric com­pos­ites: as­sess­ing the fer­ro­elec­tric but­ter­fly shape in…

Authors: V. Myroshnychenko, P. M. Mulavarickal Jose, H. Farheen, S. Ejaz, Ch. Brosseau, J. Förstner https://ris.uni-paderborn.de/record/52700 https://doi.org/10.1088/1402-4896/ad3172

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New pub­lic­a­tion: On-De­mand In­dis­tin­guish­able and En­tangled Photons Us­ing Tailored Cav­ity Designs

Authors: D. Bauch, D. Siebert, K. D. Jöns, J. Förstner, S. Schumacher Our recent paper “On-Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs”, https://doi.org/10.1002/qute.202300142, made it to the cover of the Advanced Quantum Technology journal:  https://doi.org/10.1002/qute.202470001

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Mas­ter thes­is present­a­tion of Mah­mu­dul Has­san Sourav: Nu­mer­ic­al Char­ac­ter­iz­a­tion of Bends in LNOI Wave­guides"

Lecturer: Mahmudul Hassan Sourav Date: 17.01.2024 Time: 12:30 Uhr Language: English Place: TET seminar room P1.5.01.4

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New pub­lic­a­tion: Char­ac­ter­iz­a­tion of Vari­ous En­vir­on­ment­al In­flu­ences on the In­duct­ive Loc­al­iz­a­tion

S. Lange, U. Hilleringmann, Ch. Hedayat, H. Kuhn, J. Förstner Published in: 2023 IEEE Conference on Antenna Measurements and Applications (CAMA) https://ieeexplore.ieee.org/document/10352780 https://ris.uni-paderborn.de/record/49890

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The five most re­cent pub­lic­a­tions

From Swiss-cheese to discrete ferroelectric composites: assessing the ferroelectric butterfly shape in polarization loops

V. Myroshnychenko, P.M. Mulavarickal Jose, H. Farheen, S. Ejaz, C. Brosseau, J. Förstner, Physica Scripta 99 (2024) 045952.

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Estimation of losses caused by sidewall roughness in thin-film lithium niobate rib and strip waveguides

M. Hammer, S. Babel, H. Farheen, L. Padberg, J.C. Scheytt, C. Silberhorn, J. Förstner, Optics Express 32 (2024) 22878.

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Increasing the upward radiation efficiency of optical phased arrays using asymmetric silicon horn antennas

H. Farheen, S. Joshi, J.C. Scheytt, V. Myroshnychenko, J. Förstner, in: 2023 IEEE Photonics Conference (IPC), IEEE, 2023.

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Tailoring the directive nature of optical waveguide antennas

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.

DOI

Optimized silicon antennas for optical phased arrays

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.

DOI

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