Prof. Alexander Bergmann Profile

Prof. Alexander Bergmann

at Technische Univ Graz

SPIE Involvement:

Author

Publications (15)

Proceedings Article | 24 June 2024 Presentation + Paper

Nearly percolated Au films for interference-based sensing

Elizabeth Hedl, Alexander Bergmann, Željko Samec, Jordi Sancho-Parramon

Proceedings Volume 13020, 1302005 (2024) https://doi.org/10.1117/12.3016493

KEYWORDS: Thin films, Gold, Optical properties, Film thickness, Fabry Perot interferometers

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Proceedings Article | 20 June 2024 Presentation + Paper

Optimization of a silicon nitride-based microring resonator platform towards pinnacle sensitivity in chemical- and biosensing

Jakob Wilhelm Hinum-Wagner, Samuel Marko Hoermann, Gandolf Feigl, Christoph Schmidt, Jochen Kraft, Alexander Bergmann

Proceedings Volume 13008, 130080B (2024) https://doi.org/10.1117/12.3008742

KEYWORDS: Waveguides, Interfaces, Resonators, Sensors, Polarization, Design, Scattering, Refractive index, Photonic integrated circuits, Signal attenuation

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Proceedings Article | 18 June 2024 Poster + Paper

Random forest modelling as a tool for propagation and bend excess loss minimization on silicon nitride waveguide platforms

Jakob Wilhelm Hinum-Wagner, Samuel Marko Hoermann, Gandolf Feigl, Christoph Schmidt, Jochen Kraft, Alexander Bergmann

Proceedings Volume 13017, 1301718 (2024) https://doi.org/10.1117/12.3022455

KEYWORDS: Waveguides, Random forests, Wave propagation, Silicon, Data modeling, Photonic integrated circuits, Semiconducting wafers, Design, Performance modeling, Statistical analysis

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Proceedings Article | 18 June 2024 Presentation + Paper

Enhancing silicon nitride waveguide performance: optimization of sidewall roughness for low-loss applications through resist reflowing via tree-based modeling of relevant processing parameters

Jakob Wilhelm Hinum-Wagner, Samuel Marko Hoermann, Gandolf Feigl, Christoph Schmidt, Jochen Kraft, Alexander Bergmann

Proceedings Volume 13011, 1301102 (2024) https://doi.org/10.1117/12.3017081

KEYWORDS: Waveguides, Annealing, Silicon, Wave propagation, Data modeling, Semiconducting wafers, Plasma enhanced chemical vapor deposition, Diffractive optical elements, Low pressure chemical vapor deposition, Design

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Proceedings Article | 18 June 2024 Poster + Paper

Comparative analysis of fabrication techniques for sensing windows on silicon nitride waveguide platforms

Jakob Wilhelm Hinum-Wagner, Samuel Marko Hoermann, Gandolf Feigl, Christoph Schmidt, Deborah Morecroft, Jochen Kraft, Alexander Bergmann

Proceedings Volume 13012, 130120N (2024) https://doi.org/10.1117/12.3008895

KEYWORDS: Waveguides, Windows, Semiconducting wafers, Plasma enhanced chemical vapor deposition, Fabrication, Etching, Low pressure chemical vapor deposition, Wave propagation, Silicon nitride, Silicon

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SPIE Journal Paper | 4 June 2024 Open Access

Photothermal gas sensing with a custom-made, fiber-coupled Fabry–Pérot etalon

Manuel Tanzer, Benjamin Lang, Matej Njegovec, Vedran Budinski, Simon Pevec, Jure Javornik, Denis Donlagic, Alexander Bergmann

OE, Vol. 63, Issue 06, 064101, (June 2024) https://doi.org/10.1117/12.10.1117/1.OE.63.6.064101

KEYWORDS: Sensors, Fabry Perot interferometers, Sensing systems, Reflection, Laser sources, Signal to noise ratio, Optical engineering, Laser interferometry, Signal detection, Nitrogen dioxide

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Proceedings Article | 30 November 2023 Paper

CART-based optimization of core and cladding layers in silicon nitride photonic integrated circuits towards propagation and bend loss minimization

Jakob Wilhelm Hinum-Wagner, Peter Scheibelhofer, Samuel Marko Hörmann, Christoph Schmidt, Gandolf Feigl, Jochen Kraft, Alexander Bergmann

Proceedings Volume 12794, 127940S (2023) https://doi.org/10.1117/12.3000805

KEYWORDS: Waveguides, Silicon, Semiconducting wafers, Wave propagation, Data modeling, Diffractive optical elements, Cladding, Low pressure chemical vapor deposition, Plasma enhanced chemical vapor deposition, Photonic integrated circuits

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Proceedings Article | 4 October 2023 Presentation + Paper

Photothermal gas sensing with a custom-made, fiber-coupled Fabry-Pérot etalon

M. Tanzer, B. Lang, A. Bergmann

Proceedings Volume 12672, 126720D (2023) https://doi.org/10.1117/12.2676337

KEYWORDS: Sensors, Signal to noise ratio, Fabry–Perot interferometers, Gas sensors, Laser interferometry, Interferometers, Fabry–Perot interferometry, Nitrogen, Miniaturization, Absorption spectroscopy

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Proceedings Article | 28 September 2023 Presentation + Paper

Loss-engineering of a bimodal waveguide interferometer: an optimized silicon nitride platform for chemical and biological sensing

Samuel Hörmann, Jakob Hinum-Wagner, Alexander Bergmann

Proceedings Volume 12664, 1266408 (2023) https://doi.org/10.1117/12.2677385

KEYWORDS: Waveguides, Design and modelling, Scattering, Silicon nitride, Refractive index, Interferometers, Interfaces, Biosensing, Crosstalk, Surface roughness

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Proceedings Article | 28 September 2023 Presentation + Paper

Ab-initio modeling of bend-losses in silicon nitride waveguides from visible to near-infrared

Jakob Hinum-Wagner, Samuel Hoermann, Jürgen Sattelkow, Anton Buchberger, Christian Schörner, Stephan Janka, Georg Rossbach, Desiree Rist, Jochen Kraft, Alexander Bergmann

Proceedings Volume 12664, 1266405 (2023) https://doi.org/10.1117/12.2677328

KEYWORDS: Waveguides, Scattering, Silicon nitride, Modeling, Systems modeling, Wave propagation, Surface roughness, Integrated photonics, Fabrication, Absorption

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Proceedings Article | 28 September 2023 Presentation + Paper

Integrated interferometer design for zero cross-sensitivity to matrix perturbations

Samuel Hörmann, Jakob Hinum-Wagner, Alexander Bergmann

Proceedings Volume 12665, 1266506 (2023) https://doi.org/10.1117/12.2677277

KEYWORDS: Waveguides, Design and modelling, Integrated photonics, Sensors, Photonic integrated circuits, Biosensors, Silicon nitride, Phase shifts, Mach Zehnder interferometers, Crosstalk

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Proceedings Article | 31 May 2023 Presentation + Paper

Design optimization of silicon nitride-based micro-ring resonator systems in a CMOS mass production environment

Jakob Wilhelm Hinum-Wagner, Anton Buchberger, Christoph Schmidt, Christian Schörner, Desiree Rist, Samuel Marko Hoermann, Gandolf Feigl, Iga Malicka, Stephan Janka, Jochen Kraft, Alexander Bergmann

Proceedings Volume 12575, 125750A (2023) https://doi.org/10.1117/12.2665322

KEYWORDS: Semiconducting wafers, Waveguides, Silicon, Resonators, Design and modelling, Fabrication, Simulations, Plasma enhanced chemical vapor deposition, Microrings, Low pressure chemical vapor deposition

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Proceedings Article | 23 May 2023 Paper

Long-term stability study of fiber Bragg grating sensors integrated into a lithium-ion pouch cell

Johanna Unterkofler, Reinhard Klambauer, Alexander Bergmann

Proceedings Volume 12643, 126430N (2023) https://doi.org/10.1117/12.2678298

KEYWORDS: Fiber Bragg gratings, Sensors, Temperature metrology, Bragg wavelengths, Batteries, Capillaries, Calibration, Temperature sensors

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Proceedings Article | 21 August 2020 Poster + Paper

Fast optical humidity sensor based on nanostructured hydrogels

Stefan Cesnik, Anna M. Coclite, Alberto Perrotta, Alessandro Cian, Massimo Tormen, Alexander Bergmann

Proceedings Volume 11467, 114672K (2020) https://doi.org/10.1117/12.2568475

KEYWORDS: Humidity, Sensors, Nanoimprint lithography, Thin films, Diffraction gratings, Diffraction, Nanostructures, Nanostructuring, Sapphire

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Proceedings Article | 21 August 2020 Poster + Paper

Sensitivity optimization of an evanescent field particle detector based on a silicon nitride waveguide

Anton Buchberger, Paul Maierhofer, Jochen Kraft, Marcus Baumgart, Alexander Bergmann

Proceedings Volume 11467, 114672J (2020) https://doi.org/10.1117/12.2566906

KEYWORDS: Waveguides, Particles, Sensors, Silicon, Refractive index, Cladding, Wave propagation, Numerical simulations

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Showing 5 of 15 publications

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