Dr. Gerd-Albert Hoffmann Profile

Dr. Gerd-Albert Hoffmann

at Laser Zentrum Hannover eV

SPIE Involvement:

Author

Publications (13)

Proceedings Article | 24 June 2024 Presentation + Paper

Integrable thin-film Fabry-Pérot type electro-optic modulator

Anna Rüßeler, Philipp Gehrke, Florens Kurth, Li Zhao, Sophie-Luise Hachmeister, Jonas Matthes, Gerd-Albert Hoffmann, Marco Jupé, Hans-Hermann Johannes, Wolfgang Kowalsky, Tasja Schwenke, Henning Menzel, Andreas Wienke, Detlev Ristau

Proceedings Volume 13020, 130200E (2024) https://doi.org/10.1117/12.3016155

KEYWORDS: Electrooptic polymers, Nonlinear optical materials, Photonic integrated circuits, Electrooptical systems integration, Sputter deposition, Electrooptic modulation, Thin films, Miniaturization, Electric fields, Modulation, Electrooptic modulators, Electrooptics

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Proceedings Article | 18 June 2024 Presentation

Characterization of the thermal stability of IBS coated substrate free miniaturized filters

Jonas Matthes, Anna Rüsseler, Gerd Hoffmann, Andreas Wienke

Proceedings Volume PC13020, PC130200C (2024) https://doi.org/10.1117/12.3017091

KEYWORDS: Tunable filters, Thermal stability, Miniaturization, Thin films, Temperature metrology, Photonic integrated circuits, Optics manufacturing, Optical filters, Glasses, Thermal optics

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Proceedings Article | 2 October 2023 Poster + Paper

Spectrally aligned integration of miniaturized substrate-free thin-film filters for fiber optical networks

Philipp Gehrke, Anna Rüsseler, Gerd Hoffmann, Andreas Wienke, Dietmar Kracht, Detlev Ristau

Proceedings Volume 12666, 126660M (2023) https://doi.org/10.1117/12.2676681

KEYWORDS: Tunable filters, Optical filters, Semiconducting wafers, Coating, Design and modelling, Miniaturization, Thin films, Optical alignment, Wafer-level optics, Optics manufacturing

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Proceedings Article | 5 March 2022 Presentation + Paper

Study of rotary atomic layer deposition for optical applications

Leif Kochanneck, Andreas Tewes, Gerd-Albert Hoffmann, Kalle Niiranen, John Rönn, Hector Velasco, Sami Sneck, Andreas Wienke, Detlev Ristau

Proceedings Volume 12002, 120020D (2022) https://doi.org/10.1117/12.2612173

KEYWORDS: Atomic layer deposition, Coating, Absorption, Tantalum, Quartz, Refractive index, Plasma, Optical coatings

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Proceedings Article | 7 September 2021 Presentation + Paper

Fabrication of an integrated optical system in glass using laser assisted manufacturing

B. Reitz, G.-A. Hoffmann, S. Gottwald, L. Overmeyer

Proceedings Volume 11815, 118150B (2021) https://doi.org/10.1117/12.2596376

KEYWORDS: Glasses, Waveguides, Optics manufacturing, Optical fibers, Integrated optics, Image processing, System integration, Cladding, Semiconductor lasers, Refractive index

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Proceedings Article | 7 September 2021 Presentation + Paper

Industrial processing for printed polymer optical waveguides

A. Evertz, G.-A. Hoffmann, E. Olsen, L. Overmeyer

Proceedings Volume 11815, 118150A (2021) https://doi.org/10.1117/12.2596378

KEYWORDS: Optical printed circuit boards, Waveguides, Printing, Cladding, Signal attenuation, Polymer multimode waveguides, Optics manufacturing, Integrated optics

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Proceedings Article | 5 March 2021 Presentation + Paper

Influence on the optical performance of droplets and enclosures in printed polymer optical waveguides

Carsten Backhaus, Johannes Förner, Alexander Wienke, Gerd-Albert Hoffmann, Yannic Eiche, Lukas Lorenz, Stefan Kaierle, Ludger Overmeyer, Jörg Franke, Karlheinz Bock, Norbert Lindlein

Proceedings Volume 11680, 1168009 (2021) https://doi.org/10.1117/12.2577179

KEYWORDS: Waveguides, Polymers, Polymer multimode waveguides, Signal attenuation, Printing, Aerosols, Ray tracing, Mathematical modeling, Computer simulations

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Proceedings Article | 2 March 2020 Paper

Surface functionalization of flexographic printing forms using a femtosecond laser for adjustable material transfer in MID production processes

Alexander Wienke, Gerd-Albert Hoffmann, Jürgen Koch, Peter Jäschke, Ludger Overmeyer, Stefan Kaierle

Proceedings Volume 11267, 112670F (2020) https://doi.org/10.1117/12.2543544

KEYWORDS: Printing, Femtosecond phenomena, Waveguides, Laser scanners, Laser processing, Aerosols, Laser ablation, Data communications, Optics manufacturing

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Proceedings Article | 25 February 2020 Paper

Analysis of additive manufactured polymer optical waveguides: measurement and simulation of their waviness

C. Backhaus, G. Hoffmann, T. Reitberger, Y. Eiche, L. Overmeyer, J. Franke, N. Lindlein

Proceedings Volume 11283, 112831T (2020) https://doi.org/10.1117/12.2543202

KEYWORDS: Waveguides, Printing, Additive manufacturing, Signal attenuation, Polymers, Polymer multimode waveguides, Optics manufacturing, Computer simulations, Refractive index

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Proceedings Article | 7 September 2018 Presentation + Paper

The future of short-range high-speed data transmission: printed polymer optical waveguides (POW) innovation, fabrication, and challenges

T. Reitberger, T. Stoll, G.-A. Hoffmann, L. Lorenz, S. Neermann, L. Overmeyer, K.-H. Bock, K.-J. Wolter, J. Franke

Proceedings Volume 10751, 1075109 (2018) https://doi.org/10.1117/12.2318752

KEYWORDS: Waveguides, Printing, Polymers, Polymer multimode waveguides, Cladding, Data transmission, Aerosols, Optics manufacturing, Liquids, Additive manufacturing

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SPIE Journal Paper | 27 October 2017

Improving partial wetting resolution on flexible substrates for application of polymer optical waveguides

Gerd-Albert Hoffmann, Tim Wolfer, Thomas Reitberger, Jörg Franke, Oliver Suttmann, Ludger Overmeyer

OE, Vol. 56, Issue 10, 103109, (October 2017) https://doi.org/10.1117/12.10.1117/1.OE.56.10.103109

KEYWORDS: Waveguides, Printing, Polymers, Polymer multimode waveguides, Nonimpact printing, Laser applications, Signal attenuation, Data communications, Telecommunications, Image processing

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Proceedings Article | 20 February 2017 Presentation + Paper

Manufacturing of polymer optical waveguides using self-assembly effect on pre-conditioned 3D-thermoformed flexible substrates

Gerd-Albert Hoffmann, Tim Wolfer, Jochen Zeitler, Jörg Franke, Oliver Suttmann, Ludger Overmeyer

Proceedings Volume 10115, 1011503 (2017) https://doi.org/10.1117/12.2249121

KEYWORDS: Waveguides, Polymers, Optics manufacturing, Polymer multimode waveguides, Printing, Data transmission, Packaging, Data communications, Micro optics, Microfluidics, Coating, Liquids, Polymer thin films, Glasses

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Proceedings Article | 27 September 2016 Presentation + Paper

Printing polymer optical waveguides on conditioned transparent flexible foils by using the aerosol jet technology

Thomas Reitberger, Gerd-Albert Hoffmann, Tim Wolfer, Ludger Overmeyer, Joerg Franke

Proceedings Volume 9945, 99450G (2016) https://doi.org/10.1117/12.2236220

KEYWORDS: Polymers, Printing, Waveguides, Aerosols, Liquids, Polymer multimode waveguides, Copper, Polymethylmethacrylate, Cladding, Inkjet technology

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Showing 5 of 13 publications

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