Prof. Sascha Preu Profile

Prof. Sascha Preu

at Technische Univ Darmstadt

SPIE Involvement:

Conference Chair | Conference Program Committee | Editor | Author

Proceedings Article | 18 June 2024 Presentation + Paper

Design and simulation of a nozzle-mask for optical fiber 3D-printing

Abhijeet Shrotri, Christian Wittenbröker, Sascha Preu, Oliver Stübbe

Proceedings Volume 12995, 129950A (2024) https://doi.org/10.1117/12.3017000

KEYWORDS: Design, Nozzles, Optical fibers, Stainless steel, Manufacturing, Optics manufacturing, Aluminum, Fused deposition modeling

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Proceedings Article | 8 March 2023 Poster + Paper

Characterization of SiN/SiO2-based MEMS-VCSEL at 1550 nm for optical coherence tomography

I. Rodríguez Lamoso, A. Martínez Jiménez, J. Cesar, S. Preu, A. Podoleanu

Proceedings Volume 12367, 1236716 (2023) https://doi.org/10.1117/12.2652961

KEYWORDS: Optical coherence tomography, Vertical cavity surface emitting lasers, Mirrors, Microelectromechanical systems, Laser frequency, Tunable lasers, Tissue optics

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Proceedings Article | 31 May 2022 Presentation + Paper

THz metrology with monolithic tunable two-color diode lasers

Martin Hofmann, Nils Surkamp, Alexandra Gerling, James O'Gorman, Martin Honsberg, Sebastian Schmidtmann, Uttam Nandi, Sascha Preu, Joachim Sacher, Carsten Brenner

Proceedings Volume 12134, 1213408 (2022) https://doi.org/10.1117/12.2626219

KEYWORDS: Terahertz radiation, Semiconducting wafers, Semiconductor lasers, Principal component analysis, Silicon, Refractive index, Receivers, Photonics, Metrology, Fabry–Perot interferometers

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Proceedings Article | 4 March 2022 Presentation + Paper

Slotted Y-branch laser for cw-THz thickness measurements at 1 THz

Nils Surkamp, Alexandra Gerling, James O'Gorman, Martin Honsberg, Sebastian Schmidtmann, Uttam Nandi, Sascha Preu, Joachim Sacher, Carsten Brenner, Martin Hofmann

Proceedings Volume 12021, 1202104 (2022) https://doi.org/10.1117/12.2609787

KEYWORDS: Semiconducting wafers, Terahertz radiation, Refractive index, Silicon, Spectroscopy, Fabry–Perot interferometers

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Proceedings Article | 18 October 2013 Paper

Broadband THz detection and homodyne mixing using GaAs high-electron-mobility transistor rectifiers

S. Preu, S. Regensburger, S. Kim, M. Mittendorff, S. Winnerl, S. Malzer, H. Lu, P. Burke, A. Gossard, H. Weber, M. Sherwin

Proceedings Volume 8900, 89000R (2013) https://doi.org/10.1117/12.2029478

KEYWORDS: Terahertz radiation, Field effect transistors, Antennas, Sensors, Resistance, Signal detection, Transistors, Picosecond phenomena, Free electron lasers, Diodes

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Proceedings Article | 27 April 2010 Paper

Continuous wave terahertz emitter arrays for spectroscopy and imaging applications

S. Bauerschmidt, S. Preu, S. Malzer, G. Döhler, L. Wang, H. Lu, A. Gossard

Proceedings Volume 7671, 76710D (2010) https://doi.org/10.1117/12.850090

KEYWORDS: Terahertz radiation, Imaging spectroscopy, Spectroscopy, Antennas, Optical simulations, Sensors, Absorption, Mirrors, Gaussian beams, Superlattices

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Proceedings Article | 2 October 2008 Paper

Coherent superposition of terahertz beams

Sascha Preu, Stefan Malzer, Gottfried Döhler, Lijun Wang

Proceedings Volume 7117, 71170S (2008) https://doi.org/10.1117/12.800250

KEYWORDS: Terahertz radiation, Superposition, Active remote sensing, Phase modulation, Semiconductors, Antennas, Continuous wave operation, Chemical elements, Sensors, Semiconductor lasers

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Proceedings Article | 19 April 2006 Paper

Highly collimated and directional continous-wave Terahertz emission by photomixing in semiconductor device arrays

S. Preu, S. Malzer, G. Döhler, J. Zhang, Z. H. Lu, L. J. Wang

Proceedings Volume 6194, 61940F (2006) https://doi.org/10.1117/12.662847

KEYWORDS: Terahertz radiation, Semiconductors, Microlens array, Phased arrays, Sensors, Collimation, Laser damage threshold, Antennas, Quantum cascade lasers, Gallium arsenide

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