Mr. Claus-Stefan Friedrich Profile

Claus-Stefan Friedrich

at Ruhr-Univ Bochum

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Author

Publications (4)

Proceedings Article | 23 February 2012 Paper

Multispectral photoacoustic coded excitation using pseudorandom codes

Martin Beckmann, Claus-Stefan Friedrich, Martin Mienkina, Nils Gerhardt, Martin Hofmann, Georg Schmitz

Proceedings Volume 8223, 82231E (2012) https://doi.org/10.1117/12.907427

KEYWORDS: Signal to noise ratio, Semiconductor lasers, Photoacoustic spectroscopy, Distortion, Nd:YAG lasers, Binary data, Ultrasonography, Gold, Photoacoustic imaging, Image quality

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Proceedings Article | 15 June 2011 Paper

Quantitative photoacoustic blood oxygenation measurement of whole porcine blood samples using a multi-wavelength semiconductor laser system

Claus-Stefan Friedrich, Martin Mienkina, Carsten Brenner, Nils Gerhardt, Manfred Jörger, Andreas Strauß, Martin Beckmann, Georg Schmitz, Martin Hofmann

Proceedings Volume 8088, 808814 (2011) https://doi.org/10.1117/12.889682

KEYWORDS: Blood, Photoacoustic spectroscopy, Oxygen, Semiconductor lasers, Signal detection, Laser systems engineering, Signal generators, Signal attenuation, Absorption, Transducers

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Proceedings Article | 24 February 2009 Paper

THz sources and detectors based on diode lasers

Claus-Stefan Friedrich, Carsten Brenner, Stefan Hoffmann, Tobias Schlauch, Andreas Klehr, Götz Erbert, Günther Tränkle, Christian Jördens, Mohammed Salhi, Martin Koch, Martin Hofmann

Proceedings Volume 7197, 71970B (2009) https://doi.org/10.1117/12.807853

KEYWORDS: Terahertz radiation, Semiconductor lasers, Sensors, Continuous wave operation, Laser systems engineering, Diffraction, Diffraction gratings, Mirrors, Femtosecond phenomena, Mode locking

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Proceedings Article | 12 February 2009 Paper

Compact semiconductor laser sources for photoacoustic imaging

Claus-Stefan Friedrich, Mona-Carina Wawreczko, Martin Mienkina, Nils Gerhardt, Georg Schmitz, Martin Hofmann

Proceedings Volume 7177, 71772H (2009) https://doi.org/10.1117/12.809261

KEYWORDS: Semiconductor lasers, Photoacoustic spectroscopy, Ultrasonics, Laser systems engineering, Photoacoustic imaging, Ultrasonography, Transducers, Absorption, High power lasers, Tissue optics

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