Mr. Torsten May Profile

Torsten May

at Leibniz-Institut für Photonische Technologien eV

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Author

Publications (16)

Proceedings Article | 9 June 2014 Paper

Progress in passive submillimeter-wave video imaging

Erik Heinz, Torsten May, Detlef Born, Gabriel Zieger, Katja Peiselt, Vyacheslav Zakosarenko, Torsten Krause, André Krüger, Marco Schulz, Frank Bauer, Hans-Georg Meyer

Proceedings Volume 9078, 907808 (2014) https://doi.org/10.1117/12.2054481

KEYWORDS: Cameras, Sensors, Video, Mirrors, Scanners, Detector arrays, Reflectors, Spatial resolution, Prototyping, Superconductors

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Proceedings Article | 31 May 2013 Paper

Development of passive submillimeter-wave video imaging systems

Erik Heinz, Torsten May, Detlef Born, Gabriel Zieger, Katja Peiselt, Anika Brömel, Solveig Anders, Vyacheslav Zakosarenko, Torsten Krause, André Krüger, Marco Schulz, Hans-Georg Meyer

Proceedings Volume 8715, 87150E (2013) https://doi.org/10.1117/12.2018848

KEYWORDS: Sensors, Cameras, Video, Spatial resolution, Signal to noise ratio, Reflectors, Superconductors, Mirrors, Scanners, Imaging systems

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Proceedings Article | 9 May 2013 Paper

700 J THz pulses from a laser-driven particle accelerator

Amrutha Gopal, Torsten May, Pushkar Singh, Sven Herzer, Wolfgang Ziegler, Gerhard Paulus, Albrecht Schmidt, Andreas Reinhard, Ulrich Dillner, Hans-Georg Meyer, Anupam Karmakar, Dirk Broemmel, Paul Gibbon

Proceedings Volume 8779, 87791Z (2013) https://doi.org/10.1117/12.2017254

KEYWORDS: Terahertz radiation, Mirrors, Solids, Pulsed laser operation, Particle accelerators, Laser energy, Plasmas, Electrons, Sensors, Ions

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Proceedings Article | 26 October 2012 Paper

Development of passive submillimeter-wave video imaging systems for security applications

Erik Heinz, Torsten May, Detlef Born, Gabriel Zieger, Anika Brömel, Solveig Anders, Vyacheslav Zakosarenko, Torsten Krause, André Krüger, Marco Schulz, Frank Bauer, Hans-Georg Meyer

Proceedings Volume 8544, 854402 (2012) https://doi.org/10.1117/12.976849

KEYWORDS: Sensors, Cameras, Signal to noise ratio, Video, Imaging systems, Superconductors, Mirrors, Interference (communication), Multiplexing, Reflectors

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Passive submillimeter-wave imaging is a concept that has been in the focus of interest as a promising technology for security applications for a number of years. It utilizes the unique optical properties of submillimeter waves and promises an alternative to millimeter-wave and X-ray backscattering portals for personal security screening in particular. Possible application scenarios demand sensitive, fast, and flexible high-quality imaging techniques. Considering the low radiometric contrast of indoor scenes in the submillimeter range, this objective calls for an extremely high detector sensitivity that can only be achieved using cooled detectors. Our approach to this task is a series of passive standoff video cameras for the 350 GHz band that represent an evolving concept and a continuous development since 2007. The cameras utilize arrays of superconducting transition-edge sensors (TES), i. e. cryogenic microbolometers, as radiation detectors. The TES are operated at temperatures below 1 K, cooled by a closed-cycle cooling system, and coupled to superconducting readout electronics. By this means, background limited photometry (BLIP) mode is achieved providing the maximum possible signal to noise ratio. At video rates, this leads to a pixel NETD well below 1K. The imaging system is completed by reflector optics based on free-form mirrors. For object distances of 3–10 m, a field of view up to 2m height and a diffraction-limited spatial resolution in the order of 1–2 cm is provided. Opto-mechanical scanning systems are part of the optical setup and capable frame rates up to 25 frames per second. Both spiraliform and linear scanning schemes have been developed. Several electronic and software components are used for system control, signal amplification, and data processing. Our objective is the design of an application-ready and user-friendly imaging system. For application in real world security screening scenarios, it can be extended using image processing and automated threat detection software.

Proceedings Article | 8 May 2012 Paper

Superconducting nanowire single-photon detectors for picosecond time resolved spectroscopic applications

Torsten May, Julia Toussaint, Roman Grüner, Marco Schubert, Hans-Georg Meyer, Benjamin Dietzek, Jürgen Popp, Matthias Hofherr, Konstantin Il'in, Dagmar Henrich, Matthias Arndt, Michael Siegel

Proceedings Volume 8427, 84274B (2012) https://doi.org/10.1117/12.970543

KEYWORDS: Sensors, Signal detection, Superconductors, Picosecond phenomena, Single photon detectors, Raman spectroscopy, Photons, Spectroscopy, Luminescence, Nanowires

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Proceedings Article | 17 April 2012 Paper

MEMS: fabrication of cryogenic bolometers

J. Kunert, S. Anders, T. May, V. Zakosarenko, G. Zieger, E. Kreysa, H.-G. Meyer

Proceedings Volume 8352, 83520F (2012) https://doi.org/10.1117/12.923707

KEYWORDS: Bolometers, Semiconducting wafers, Cryogenics, Video, Silicon, Microelectromechanical systems, Astronomy, Lithography, Cameras, Terahertz radiation

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SPIE Journal Paper | 1 November 2011

Toward high-sensitivity and high-resolution submillimeter-wave video imaging

Erik Heinz, Torsten May, Detlef Born, Gabriel Zieger, Guenter Thorwirth, Solveig Anders, Viatcheslav Zakosarenko, Torsten Krause, André Krüger, Marco Schulz, Hans-Georg Meyer, Marco Schubert, Michael Starkloff

OE, Vol. 50, Issue 11, 113204, (November 2011) https://doi.org/10.1117/12.10.1117/1.3654089

KEYWORDS: Cameras, Bolometers, Sensors, Video, Spatial resolution, Image sensors, Interference (communication), Superconductors, Imaging systems, Modulation transfer functions

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Proceedings Article | 26 May 2011 Paper

Towards high-sensitivity and high-resolution submillimeter-wave video imaging

Erik Heinz, Torsten May, Detlef Born, Gabriel Zieger, Solveig Anders, Viatcheslav Zakosarenko, Marco Schubert, Torsten Krause, André Krüger, Marco Schulz, Hans-Georg Meyer

Proceedings Volume 8022, 802204 (2011) https://doi.org/10.1117/12.883352

KEYWORDS: Cameras, Bolometers, Sensors, Interference (communication), Video, Spatial resolution, Calibration, Image sensors, Mirrors, Superconductors

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Proceedings Article | 27 April 2010 Paper

Progress report on Safe VISITOR: approaching a practical instrument for terahertz security screening

Erik Heinz, Detlef Born, Gabriel Zieger, Torsten May, Torsten Krause, Andre Krüger, Marco Schulz, Solveig Anders, Viatcheslav Zakosarenko, Hans-Georg Meyer, Michael Starkloff, Mario Rößler, Guenter Thorwirth, Ulf Krause

Proceedings Volume 7670, 767005 (2010) https://doi.org/10.1117/12.852558

KEYWORDS: Cameras, Sensors, Signal detection, Bolometers, Video, Scanners, Spatial resolution, Infrared radiation, Terahertz radiation, Visible radiation

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Proceedings Article | 30 April 2009 Paper

Safe VISITOR: visible, infrared, and terahertz object recognition for security screening application

T. May, G. Zieger, S. Anders, V. Zakosarenko, H.-G. Meyer, M. Schubert, M. Starkloff, M. Rößler, G. Thorwirth, U. Krause

Proceedings Volume 7309, 73090E (2009) https://doi.org/10.1117/12.818524

KEYWORDS: Sensors, Cameras, Infrared radiation, Visible radiation, Terahertz radiation, Infrared imaging, Information security, Image fusion, Scanners, Infrared cameras

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Proceedings Article | 28 July 2008 Paper

Superconducting bolometers for millimeter and sub-millimeter wavelengths

N. Jethava, E. Kreysa, G. Siringo, W. Esch, H.-P. Gemünd, K. Menten, T. May, S. Anders, L. Fritzsch, R. Boucher, V. Zakosarenko, H.-G. Meyer

Proceedings Volume 7020, 70200H (2008) https://doi.org/10.1117/12.787092

KEYWORDS: Bolometers, Silicon, Gold, Finite element methods, Signal to noise ratio, Superconductors, Resistance, Vestigial sideband modulation, Sensors, Temperature metrology

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Proceedings Article | 15 April 2008 Paper

Passive stand-off terahertz imaging with 1 hertz frame rate

T. May, G. Zieger, S. Anders, V. Zakosarenko, M. Starkloff, H.-G. Meyer, G. Thorwirth, E. Kreysa

Proceedings Volume 6949, 69490C (2008) https://doi.org/10.1117/12.777952

KEYWORDS: Sensors, Cameras, Mirrors, Terahertz radiation, Superconductors, Bolometers, Telescopes, Signal detection, Information operations, Video

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Proceedings Article | 4 May 2007 Paper

A superconducting terahertz imager

T. May, S. Anders, V. Zakosarenko, M. Starkloff, H.-G. Meyer, G. Thorwirth, E. Kreysa

Proceedings Volume 6549, 65490D (2007) https://doi.org/10.1117/12.720512

KEYWORDS: Bolometers, Terahertz radiation, Superconductors, Sensors, Mirrors, Imaging systems, Telescopes, Zemax, Signal detection, Optical scanning

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Proceedings Article | 27 June 2006 Paper

A superconducting bolometer camera for APEX

N. Jethava, E. Kreysa, G. Siringo, W. Esch, H.-P. Gemünd, T. May, S. Anders, L. Fritzsch, R. Boucher, V. Zakosarenko, H.-G. Meyer

Proceedings Volume 6275, 62751A (2006) https://doi.org/10.1117/12.671255

KEYWORDS: Bolometers, Silicon, Resistance, Superconductors, Gold, Vestigial sideband modulation, Molybdenum, Thermal modeling, Interference (communication), Cameras

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Proceedings Article | 27 June 2006 Paper

Fabricating transition-edge bolometers and the SQUID readout on one chip

T. May, S. Anders, L. Fritzsch, R. Boucher, V. Zakosarenko, H.-G. Meyer, N. Jethava, E. Kreysa, G. Siringo

Proceedings Volume 6275, 62751Q (2006) https://doi.org/10.1117/12.671441

KEYWORDS: Sensors, Bolometers, Manufacturing, Silicon, Molybdenum, Metals, Resistance, Semiconducting wafers, Multiplexing, Antennas

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Proceedings Article | 17 February 2003 Paper

LABOCA: a first-generation bolometer camera for APEX

Ernst Kreysa, Frank Bertoldi, Hans-Peter Gemuend, Karl Menten, Dirk Muders, Lothar Reichertz, Peter Schilke, Rolf Chini, Roland Lemke, Torsten May, Hans-Georg Meyer, Viatcheslav Zakosarenko

Proceedings Volume 4855, (2003) https://doi.org/10.1117/12.459176

KEYWORDS: Bolometers, Semiconducting wafers, Telescopes, Astronomy, Cameras, Space telescopes, Receivers, Superconductors, Gold, Helium

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Showing 5 of 16 publications

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