Dr. Kay Sowoidnich Profile

Dr. Kay Sowoidnich

at Ferdinand-Braun-Institut gGmbH

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Author

Publications (19)

Proceedings Article | 12 March 2024 Presentation + Paper

Portable shifted excitation Raman difference spectroscopy for agri-photonics: from on-site precision agriculture to smart farming

Martin Maiwald, Kay Sowoidnich, André Müller, Bernd Sumpf

Proceedings Volume 12879, 1287907 (2024) https://doi.org/10.1117/12.2692266

KEYWORDS: Raman spectroscopy, Portability, Sensors, Agriculture, Semiconductor lasers, Calcite, Spectroscopy, Soil science, Signal intensity, Photons

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Proceedings Article | 11 March 2024 Presentation + Paper

Versatile turnkey laser system operating multi-section diode lasers and diode laser systems in the VIS and NIR spectral range

Bernd Sumpf, Lucas Wittenbecher, Thomas Filler, Daniel Bandke, Maria Krichler, André Müller, Kay Sowoidnich, Arnim Ginolas, Neysha Lobo-Ploch, Martin Maiwald

Proceedings Volume 12893, 1289309 (2024) https://doi.org/10.1117/12.2692859

KEYWORDS: Semiconductor lasers, Raman spectroscopy, Laser systems engineering, Emission wavelengths, Light sources, Spectroscopy, Heatsinks, Near infrared, Waveguides, Switching

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Proceedings Article | 17 March 2023 Presentation + Paper

Pilot investigations on solids, liquids and gases using a portable shifted excitation Raman difference spectroscopy sensor system

M. Maiwald, K. Sowoidnich, B. Sumpf

Proceedings Volume 12396, 1239602 (2023) https://doi.org/10.1117/12.2649696

KEYWORDS: Raman spectroscopy, Gases, Oxygen, Sensors, Portability, Semiconductor lasers, Visible radiation, Signal intensity, Spectroscopy, Nitrogen

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Proceedings Article | 3 March 2022 Presentation + Paper

On-site shifted excitation Raman difference spectroscopy for soil investigations

M. Maiwald, K. Sowoidnich, B. Sumpf

Proceedings Volume 11978, 1197804 (2022) https://doi.org/10.1117/12.2608190

KEYWORDS: Raman spectroscopy, Soil science, Sensors, Semiconductor lasers, Spectroscopy, Calcite, Laser development, Carbonates, Laser systems engineering, Laser resonators

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Proceedings Article | 3 March 2020 Paper

Charge-shifting optical lock-in detection with shifted excitation Raman difference spectroscopy for the analysis of fluorescent heterogeneous samples

Kay Sowoidnich, Martin Maiwald, Bernd Sumpf, Michael Towrie, Pavel Matousek

Proceedings Volume 11236, 112360K (2020) https://doi.org/10.1117/12.2544752

KEYWORDS: Raman spectroscopy, Charge-coupled devices, Laser resonators, Spectroscopy, Luminescence, Semiconductor lasers, Pulsed laser operation, Collimation, Data modeling, Biomedical optics

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Proceedings Article | 17 May 2018 Paper

In-situ species authentication of frozen-thawed meat and meat juice using shifted excitation Raman difference spectroscopy

Kay Sowoidnich, Heinz-Detlef Kronfeldt

Proceedings Volume 10685, 106850L (2018) https://doi.org/10.1117/12.2306659

KEYWORDS: Raman spectroscopy, Proteins, Luminescence, Spectroscopy, Spectrometers, Semiconductor lasers, Liquids

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Proceedings Article | 27 April 2016 Paper

Shifted excitation Raman difference spectroscopy for authentication of cheese and cheese analogues

Kay Sowoidnich, Heinz-Detlef Kronfeldt

Proceedings Volume 9887, 98871Z (2016) https://doi.org/10.1117/12.2227391

KEYWORDS: Raman spectroscopy, Spectroscopy, Microsystems, Semiconductor lasers, Food inspection, Proteins, Optical benches

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Proceedings Article | 27 April 2016 Open Access

Assessment of photon migration for subsurface probing in selected types of bone using spatially offset Raman spectroscopy

Kay Sowoidnich, John Churchwell, Kevin Buckley, Jemma Kerns, Allen Goodship, Anthony Parker, Pavel Matousek

Proceedings Volume 9887, 988719 (2016) https://doi.org/10.1117/12.2227384

KEYWORDS: Bone, Raman spectroscopy, Signal detection, In vivo imaging, Raman scattering, Scattering, Spectroscopy, Diseases and disorders, Collagen, Minerals, Optical properties

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Proceedings Article | 17 July 2015 Open Access

Spatially offset Raman spectroscopy for photon migration investigations in long bone

Kay Sowoidnich, John Churchwell, Kevin Buckley, Jemma Kerns, Allen Goodship, Anthony Parker, Pavel Matousek

Proceedings Volume 9540, 954009 (2015) https://doi.org/10.1117/12.2183632

KEYWORDS: Bone, Raman spectroscopy, Scattering, Raman scattering, Tissue optics, Tissues, Chemical analysis, In vivo imaging, Diagnostics, Laser scattering

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Proceedings Article | 31 May 2013 Paper

Miniaturized diode laser-based light sources for in-situ shifted excitation Raman difference spectroscopy

Bernd Sumpf, Martin Maiwald, Kay Sowoidnich, Heinz-Detlef Kronfeldt

Proceedings Volume 8718, 87180D (2013) https://doi.org/10.1117/12.2017852

KEYWORDS: Raman spectroscopy, Semiconductor lasers, Light sources, Spectroscopy, Luminescence, Micro optics, Bioalcohols, Crystals, Nonlinear crystals, Collimation

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Proceedings Article | 31 May 2013 Paper

Innovative Raman spectroscopic concepts for in situ monitoring of chemicals in seawater

Kay Sowoidnich, María Fernández López, Heinz-Detlef Kronfeldt

Proceedings Volume 8718, 871802 (2013) https://doi.org/10.1117/12.2015257

KEYWORDS: Surface enhanced Raman spectroscopy, Raman spectroscopy, Gold, Electroless plating, Nanoparticles, Spectroscopy, Luminescence, Silicon, Quartz, Silver

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Proceedings Article | 9 May 2012 Paper

Multispectral diode laser based shifted excitation Raman difference spectroscopy for biological sample identification

Kay Sowoidnich, Heinz-Detlef Kronfeldt

Proceedings Volume 8366, 836603 (2012) https://doi.org/10.1117/12.918253

KEYWORDS: Raman spectroscopy, Semiconductor lasers, Luminescence, Connective tissue, Bone, Spectroscopy, Microsystems, Tissues, Biological research, Spectrometers

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Proceedings Article | 5 May 2012 Paper

In-situ identification of meat from different animal species by shifted excitation Raman difference spectroscopy

Kay Sowoidnich, Heinz-Detlef Kronfeldt

Proceedings Volume 8369, 83690J (2012) https://doi.org/10.1117/12.918259

KEYWORDS: Raman spectroscopy, Semiconductor lasers, Luminescence, Spectroscopy, Microsystems, Spectrometers, Principal component analysis, Optical benches, Proteins, Head

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Proceedings Article | 3 June 2011 Paper

Polarized Raman investigations of oriented animal muscle fibers affected by storage time applying a 671 nm diode laser

Halah Al Ebrahim, Kay Sowoidnich, Heinar Schmidt, Heinz-Detlef Kronfeldt

Proceedings Volume 8027, 802704 (2011) https://doi.org/10.1117/12.883357

KEYWORDS: Raman spectroscopy, Optical fibers, Proteins, Principal component analysis, Semiconductor lasers, Breast, Polarization, Anisotropy, Molecular spectroscopy, Data storage

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Proceedings Article | 26 May 2011 Paper

671-nm microsystem diode laser based on portable Raman sensor device for in-situ identification of meat spoilage

Kay Sowoidnich, Heinar Schmidt, Fredi Schwägele, Heinz-Detlef Kronfeldt

Proceedings Volume 8024, 80240D (2011) https://doi.org/10.1117/12.883350

KEYWORDS: Raman spectroscopy, Sensors, Principal component analysis, Statistical analysis, Semiconductor lasers, Head, Microsystems, Spectroscopy, Optical benches, Proteins

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Proceedings Article | 26 May 2011 Paper

High sensitivity calixarene SERS substrates for the continuous in-situ detection of PAHs in seawater

Yong-Hyok Kwon, Anna Kolomijeca, Kay Sowoidnich, Heinz-Detlef Kronfeldt

Proceedings Volume 8024, 80240E (2011) https://doi.org/10.1117/12.883363

KEYWORDS: Surface enhanced Raman spectroscopy, Raman spectroscopy, Silver, Sensors, Sol-gels, Semiconductor lasers, Chemical analysis, Scanning electron microscopy, Nanoparticles, Adsorption

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Proceedings Article | 24 April 2010 Paper

Shifted excitation resonance Raman difference spectroscopy using a microsystem light source at 488 nm

M. Maiwald, K. Sowoidnich, H. Schmidt, B. Sumpf, G. Erbert, H.-D. Kronfeldt

Proceedings Volume 7673, 76730N (2010) https://doi.org/10.1117/12.853017

KEYWORDS: Raman spectroscopy, Light sources, Semiconductor lasers, Second-harmonic generation, Spectroscopy, Crystals, Laser crystals, Microsystems, Bandpass filters, Waveguides

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Proceedings Article | 1 May 2009 Paper

Hand-held Raman sensor head for in-situ characterization of meat quality applying a microsystem 671 nm diode laser

Heinar Schmidt, Kay Sowoidnich, Martin Maiwald, Bernd Sumpf, Heinz-Detlef Kronfeldt

Proceedings Volume 7312, 73120H (2009) https://doi.org/10.1117/12.818163

KEYWORDS: Raman spectroscopy, Optical benches, Sensors, Head, Microsystems, Semiconductor lasers, Spectroscopy, Laser optics, Packaging, Optical filters

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Proceedings Article | 28 April 2009 Paper

In-situ characterization of meat aging with diode-laser Raman spectroscopy

Heinar Schmidt, Jenny Blum, Kay Sowoidnich, Bernd Sumpf, Fredi Schwägele, Heinz-Detlef Kronfeldt

Proceedings Volume 7315, 731509 (2009) https://doi.org/10.1117/12.818182

KEYWORDS: Raman spectroscopy, Proteins, Laser induced fluorescence, Principal component analysis, Packaging, Bacteria, Statistical analysis, Semiconductor lasers, Near infrared, Oxygen

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Showing 5 of 19 publications

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