Ms. Dörte Schönfeld Profile

Dörte Schönfeld

Project Manager at Heraeus Quarzglas GmbH and Co KG

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Publications (7)

Proceedings Article | 12 March 2024 Presentation + Paper

Characterization of multi-clad fibers: approaches to measure the beam divergence angle and its degradation in the fiber

Dörte Schönfeld, Daniel Reul, Philipp Raithel, Karl-Friedrich Klein, Andreas Langner

Proceedings Volume 12878, 1287805 (2024) https://doi.org/10.1117/12.3000461

KEYWORDS: Beam diameter, Beam divergence, Polishing, Silica, Image analysis, Quality control, Light emitting diodes, Fiber lasers, Cladding, Cameras

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Proceedings Article | 5 March 2021 Presentation + Paper

Trends in specialty fiber optic materials: characterization and applications

Andreas Langner, Peter Bauer, Dörte Schönfeld, Bodo Kühn, Maximilian Schmitt, Gerhard Schötz

Proceedings Volume 11635, 1163506 (2021) https://doi.org/10.1117/12.2576252

KEYWORDS: Specialty optical fibers, Optical fibers, Silica, Optics manufacturing, Visible radiation, Ultraviolet radiation, Surgery, Step index fibers, Solids

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Proceedings Article | 7 March 2019 Paper

Improvement of the manufacturing process chain of sintered active XLMA fibers and their preforms for use in high power, high efficiency fiber resonators

A. Langner, F. Moser, J. Plass, D. Schönfeld, G. Schötz, T. Brabant, G. Kuka, M. Giesberts, P. Baer, S. Klein, O. Fitzau, H.-D. Hoffmann, G. Rehmann, V. Krause

Proceedings Volume 10897, 108970F (2019) https://doi.org/10.1117/12.2508597

KEYWORDS: Optical fibers, Fiber lasers, Scattering, Luminescence, Light scattering, Manufacturing, Refractive index, Silica, Cladding, Ytterbium, Rare earth doped glasses, Silicate glass

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Proceedings Article | 20 December 2007 Paper

Measurement of initial absorption of fused silica at 193nm using laser induced deflection technique (LID)

Dörte Schönfeld, Ursula Klett, Christian Mühlig, Stephan Thomas

Proceedings Volume 6720, 67201A (2007) https://doi.org/10.1117/12.753081

KEYWORDS: Absorption, Laser induced damage, Silica, Calibration, Scattering, Refractive index, Spectroscopy, Optical lithography, Temperature metrology, Light scattering

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Proceedings Article | 20 October 2005 Paper

Stitching oil-on interferometry of large fused silica blanks

Dörte Schönfeld, Thomas Reuter, Ralf Takke, Stephan Thomas

Proceedings Volume 5965, 59650V (2005) https://doi.org/10.1117/12.626115

KEYWORDS: Interferometers, Silica, Polishing, Interferometry, Surface finishing, Interfaces, Wavefronts, Optics manufacturing, National Ignition Facility, Lenses

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Proceedings Article | 10 December 2001 Paper

How to measure sub-ppm optical homogeneity in fused silica: impact of temperature on accuracy and reproducibility

Doerte Schoenfeld, Bodo Kuehn, Armin Steinert, Ralf Takke

Proceedings Volume 4449, (2001) https://doi.org/10.1117/12.450083

KEYWORDS: Temperature metrology, Interferometry, Error analysis, Silica, Glasses, Interferometers, Statistical analysis, Environmental sensing, Thermal effects, Wavefronts

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Proceedings Article | 22 September 1997 Paper

Enhanced performance of polymer waveguides by replication and UV patterning in ORMOCER

Doerte Schoenfeld, Oliver Roesch, Peter Dannberg, Andreas Braeuer, Roland Mueller-Fiedler, Michael Popall, Ralf Buestrich

Proceedings Volume 3135, (1997) https://doi.org/10.1117/12.284101

KEYWORDS: Waveguides, Polymers, Switching, Optical lithography, Optical switching, Networks, Polymer multimode waveguides, Absorption, Scattering, Switches

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Showing 5 of 7 publications

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