Dr. Alexander Dräbenstedt Profile

Dr. Alexander Dräbenstedt

at Polytec GmbH

SPIE Involvement:

Author

Publications (11)

Proceedings Article | 17 March 2023 Presentation + Paper

Fully integrated Laser Doppler Vibrometer (LDV) based on hybrid 3D integration of silicon nitride and polymer photonic circuits with operation in the kHz regime

A. Raptakis, L. Gounaridis, M. Kleinert, M. Weigel, J. Epping, E. Schreuder, M. Wolfer, A. Draebenstedt, R. Pessina, P. Groumas, T. Aukes, V. Seyfried, N. Keil, R. Heideman, H. Avramopoulos, C. Kouloumentas

Proceedings Volume 12424, 124240A (2023) https://doi.org/10.1117/12.2650027

KEYWORDS: Waveguides, Polymers, Laser Doppler velocimetry, Modulation frequency, Polarization, Ferroelectric materials, Photonic integrated circuits, Integrated optics

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SPIE Journal Paper | 26 March 2014 Open Access

Optical three-dimensional vibrometer microscope with picometer-resolution in x, y, and z

Christian Rembe, Robert Kowarsch, Wanja Ochs, Alexander Dräbenstedt, Moritz Giesen, Marcus Winter

OE, Vol. 53, Issue 03, 034108, (March 2014) https://doi.org/10.1117/12.10.1117/1.OE.53.3.034108

KEYWORDS: Microscopes, Light scattering, Vibrometry, Interferometers, Motion measurement, Doppler effect, Microelectromechanical systems, Laser scattering, 3D metrology, Optical testing

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Proceedings Article | 5 May 2012 Paper

Real-time 3D vibration measurements in microstructures

Robert Kowarsch, Wanja Ochs, Moritz Giesen, Alexander Dräbenstedt, Marcus Winter, Christian Rembe

Proceedings Volume 8430, 84300C (2012) https://doi.org/10.1117/12.922184

KEYWORDS: Doppler effect, Sensors, 3D metrology, Signal detection, Vibrometry, Head, Light scattering, Optical testing, Laser scattering, Scattering

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Proceedings Article | 14 May 2010 Paper

Measuring ultra-sonic in-plane vibrations with the scanning confocal heterodyne interferometer

C. Rembe, F. Ur-Rehman, F. Heimes, S. Boedecker, A. Dräbenstedt

Proceedings Volume 7718, 771810 (2010) https://doi.org/10.1117/12.853890

KEYWORDS: Signal detection, Heterodyning, Demodulation, Interferometers, Vibrometry, Data processing, Optical flow, Sensors, Resonators, Optical testing

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Proceedings Article | 17 June 2008 Paper

Heterodyne laser-Doppler vibrometer with a slow-shear-mode Bragg cell for vibration measurements up to 1.2 GHz

Christian Rembe, Sebastian Boedecker, Alexander Dräbenstedt, Fred Pudewills, Georg Siegmund

Proceedings Volume 7098, 70980A (2008) https://doi.org/10.1117/12.802930

KEYWORDS: Signal detection, Sensors, Heterodyning, Interferometers, Optical testing, Bragg cells, Vibrometry, Oscilloscopes, Laser development, Modulation

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Proceedings Article | 18 June 2007 Paper

Quantification of displacement and velocity noise in vibrometer measurements on transversely moving or rotating surfaces

Alexander Dräbenstedt

Proceedings Volume 6616, 661632 (2007) https://doi.org/10.1117/12.726115

KEYWORDS: Speckle, Interferometers, Speckle pattern, Light scattering, Motion measurement, Surface roughness, Optical testing, Laser scattering, Phase shifts, Motion models

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Proceedings Article | 21 June 2006 Paper

Optical derotator for scanning vibrometer measurements on rotating objects

Sebastian Boedecker, Alexander Dräbenstedt, Lars Heller, Arne Kraft, Andreas Leonhardt, Christian Pape, Sergej Ristau, Eduard Reithmeier, Christian Rembe

Proceedings Volume 6345, 63450M (2006) https://doi.org/10.1117/12.693066

KEYWORDS: Prisms, Tolerancing, Control systems, Fluctuations and noise, Electronics, Optics manufacturing, Computer programming, Optical simulations, Beam splitters, Vibrometry

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Proceedings Article | 13 June 2005 Paper

The laser-scanning confocal vibrometer microscope

Christian Rembe, Alexander Drabenstedt

Proceedings Volume 5856, (2005) https://doi.org/10.1117/12.611996

KEYWORDS: Microscopes, Objectives, Confocal microscopy, Optical testing, Sensors, Heterodyning, Vibrometry, Mirrors, Beam splitters, Microelectromechanical systems

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