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

New pub­lic­a­tion: Guided modes of thin-film lith­i­um niobate slabs

Authors: M. Hammer, H. Farheen, J. Förstner https://ris.uni-paderborn.de/record/56193 https://doi.org/10.1364/optcon.532822

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15.10.2024: Pro­jek­t­vor­trag über die "Op­ti­mier­ung und Sim­u­la­tion ein­er Quanten­punk­t­pho­to­di­ode in CST Mi­crowave Stu­dio"

Am 15. Oktorber 2024, um 13:00 Uhr, findet folgender Projektvortrag im Seminarraum der Theoretischen Elektrotechnik (P1.5.01.4) statt, zu dem wir Sie/Euch gerne einladen würden: Optimierung und Simulation einer Quantenpunktphotodiode in CST Microwave Studio Die Vortragenden sind Boris Arnaud Olinga Olinga und Joel Aime Yamtcheu Ngangmo. Wir freuen uns über zahlreiches Interesse!

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30.09.2024: Mas­ter's pro­ject present­a­tion on "Cal­cu­lat­ing op­tic­al prop­er­ties of met­al and dielec­tric nan­o­particles us­ing fre­quency…

On Monday, 30th of September, the following master's project presentation takes place on Zoom:  Topic: Calculating optical properties of metal and dielectric nanoparticles using frequency domain finite element method and time domain discontinuous Galerkin method Lecturers: Apu Das and Linda Mary Varghese Access data: Zoom-Link: https://uni-paderborn-de.zoom-x.de/j/93686024480?pwd=ekJHL29ycDU3RTJWMWVGZjlVeU5xZz09 Meeting-ID: 936 8602 4480 K…

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New pub­lic­a­tion: An ef­fi­cient com­pact blazed grat­ing an­tenna for op­tic­al phased ar­rays

Authors: H Farheen, S Joshi, JC Scheytt, V Myroshnychenko, J Förstner https://ris.uni-paderborn.de/record/55989 https://doi.org/10.1088/2515-7647/ad6ed4

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New pub­lic­a­tion: Sym­metry-pro­tec­ted TM modes in rib-like, plus-shaped op­tic­al wave­guides with shal­low etch­ing

Authors: N. Üstün, H. Farheen, M.Hammer, J Förstner https://ris.uni-paderborn.de/record/55751 https://doi.org/10.1364/josab.528729

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New pub­lic­a­tion Ed­it­or's Pick: Art­icle Cov­er Es­tim­a­tion of losses caused by side­wall rough­ness in thin-film lith­i­um niobate rib and…

Authors: M. Hammer, S. Babel, H. Farheen, L. Padberg, J. C. Scheytt, C. Silberhorn, J. Förstner https://ris.uni-paderborn.de/record/54668 https://doi.org/10.1364/oe.521766

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The five most re­cent pub­lic­a­tions

Guided modes of thin-film lithium niobate slabs

M. Hammer, H. Farheen, J. Förstner, Optics Continuum (2024) 532822.

DOI

An efficient compact blazed grating antenna for optical phased arrays

H. Farheen, S. Joshi, J.C. Scheytt, V. Myroshnychenko, J. Förstner, Journal of Physics: Photonics 6 (2024) 045010.

DOI PDF

Symmetry-protected TM modes in rib-like, plus-shaped optical waveguides with shallow etching

N. Üstün, H. Farheen, M. Hammer, J. Förstner, Journal of the Optical Society of America B 41 (2024) 2077.

DOI PDF

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.

DOI PDF

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.

DOI PDF

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