Prof. Christian Pedersen Profile

Prof. Christian Pedersen

Research at DTU Electro

SPIE Involvement:

Author

Publications (36)

Proceedings Article | 1 April 2022 Presentation

Theory of SPDC light sources in the saturated regime

A. Ashik, Peter Tidemand-Lichtenberg, Christian Pedersen

Proceedings Volume PC11985, PC119850C (2022) https://doi.org/10.1117/12.2614015

KEYWORDS: Light sources, Mid-IR, Spectroscopy, Signal to noise ratio, Quantum cascade lasers, Signal generators, Photonic crystals, Nonlinear crystals, Interference (communication)

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Proceedings Article | 1 April 2022 Presentation

Fast, widely tunable SPDC light source in the 3-4 µm range

Peter Tidemand-Lichtenberg, Ashik A.S., Alexander Holm Ohrt, Christian Pedersen

Proceedings Volume PC11985, PC1198503 (2022) https://doi.org/10.1117/12.2614039

KEYWORDS: Light sources, Nonlinear crystals, Mid-IR, Crystals, Molecular spectroscopy, Wavelength tuning, Upconversion, Spectroscopy, Quantum cascade lasers, Q switched lasers

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Proceedings Article | 10 March 2020 Presentation

Spectrometer-based mid-infrared optical coherence tomography operating at multi-kHz line rate speed (Conference Presentation)

Niels Israelsen, Christian Petersen, Peter John Rodrigo, Ajanta Barh, Deepak Jain, Getinet Woyessa, Mikkel Jensen, Günther Hannesschläger, Peter Tidemand-Lichtenberg, Christian Pedersen, Adrian G. Podoleanu, Ole Bang

Proceedings Volume 11279, 1127906 (2020) https://doi.org/10.1117/12.2542564

KEYWORDS: Optical coherence tomography, Mid-IR, Spectroscopy, Near infrared, Nondestructive evaluation, Light scattering, Crystals, Laser crystals, Ophthalmology, Retinal scanning

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Proceedings Article | 2 March 2020 Paper

Mid-IR upconversion imaging: theory and applications

C. Pedersen, Ashik A.S., P. Tidemand-Lichtenberg

Proceedings Volume 11264, 112641A (2020) https://doi.org/10.1117/12.2548283

KEYWORDS: Upconversion, Mid-IR, Infrared imaging, Nonlinear crystals, Imaging spectroscopy, Fourier transforms, Imaging systems, Crystals, Picosecond phenomena, Femtosecond phenomena

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Proceedings Article | 26 February 2020 Paper

Nonlinear crystals for imaging and detection of mid-IR radiation

C. Pedersen, Ashik A. S., P. Tidemand-Lichtenberg

Proceedings Volume 11284, 112841A (2020) https://doi.org/10.1117/12.2550844

KEYWORDS: Upconversion, Mid-IR, Crystals, Nonlinear crystals, Phase matching, Sensors, Imaging systems, Near infrared, Signal to noise ratio, Femtosecond phenomena

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Proceedings Article | 4 March 2019 Presentation + Paper

Mid-infrared OCT imaging in highly scattering samples using real-time upconversion of broadband supercontinuum covering from 3.6-4.6 μm

Christian Petersen, Niels Israelsen, Ajanta Barh, Deepak Jain, Mikkel Jensen, Günther Hannesschläger, Peter Tidemand-Lichtenberg, Christian Pedersen, Adrian Podoleanu, Ole Bang

Proceedings Volume 10873, 108730X (2019) https://doi.org/10.1117/12.2519444

KEYWORDS: Supercontinuum generation, Supercontinuum sources, Non-invasive medical diagnostics, Nondestructive evaluation, Nonlinear frequency conversion, Optical coherence tomography, Mid-IR, Scattering, Skin, Upconversion, Biomedical optics, Ceramics, Spectroscopy, Biopsy

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Proceedings Article | 15 February 2018 Paper

Mid-infrared coincidence measurements based on intracavity frequency conversion

S. Piccione, M. Mancinelli, A. Trenti, G. Fontana, J. Dam, P. Tidemand-Lichtenberg, C. Pedersen, L. Pavesi

Proceedings Volume 10516, 105161P (2018) https://doi.org/10.1117/12.2305713

KEYWORDS: Photons, Crystals, Nonlinear crystals, Single photon detectors, Quantum efficiency, Mid-IR

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Proceedings Article | 13 February 2018 Paper

Long wavelength identification of microcalcifications in breast cancer tissue using a quantum cascade laser and upconversion detection

Y. P. Tseng, P. Bouzy, N. Stone, C. Pedersen, P. Tidemand-Lichtenberg

Proceedings Volume 10490, 104900F (2018) https://doi.org/10.1117/12.2290928

KEYWORDS: Upconversion, Breast cancer, Long wavelength infrared, Carbonates, Tissues, Quantum cascade lasers, Sensors, Infrared radiation, Absorption

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Proceedings Article | 20 February 2017 Presentation + Paper

Broadband upconversion imaging around 4 µm using an all-fiber supercontinuum source

Laurent Huot, Peter Moselund, Lasse Leick, Peter Tidemand-Lichtenberg, Christian Pedersen

Proceedings Volume 10088, 100880J (2017) https://doi.org/10.1117/12.2251805

KEYWORDS: Upconversion, Mid-IR, Imaging systems, Imaging spectroscopy, Supercontinuum sources, Spectroscopy, Hyperspectral imaging, Nonlinear crystals, Signal processing, Spectral resolution, Infrared imaging, Crystals, Infrared radiation, Indium gallium arsenide, Cameras

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Proceedings Article | 20 February 2017 Presentation + Paper

Investigation of mid-IR picosecond image upconversion

Morgan Mathez, Christian Pedersen, Peter John Rodrigo, Peter Tidemand-Lichtenberg

Proceedings Volume 10088, 100880L (2017) https://doi.org/10.1117/12.2251107

KEYWORDS: Phase matching, Upconversion, Picosecond phenomena, Mid-IR, Cameras, Image processing, Imaging spectroscopy, Spectroscopy, Indium gallium arsenide, Ultrafast imaging, Visible radiation, Crystals, Nonlinear crystals, Image resolution

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Proceedings Article | 20 February 2017 Presentation + Paper

Upconversion based spectral imaging in 6 to 8 µm spectral regime

S. Junaid, P. Tidemand-Lichtenberg, C. Pedersen

Proceedings Volume 10088, 100880I (2017) https://doi.org/10.1117/12.2250538

KEYWORDS: Upconversion, Imaging spectroscopy, Crystals, Nonlinear crystals, Phase matching, Laser crystals, Mirrors, Absorption, Silver, Visible radiation

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Proceedings Article | 17 February 2017 Presentation + Paper

340nm UV LED excitation in time-resolved fluorescence system for europium-based immunoassays detection

Olga Rodenko, Henrik Fodgaard, Peter Tidemand-Lichtenberg, Christian Pedersen

Proceedings Volume 10072, 100720M (2017) https://doi.org/10.1117/12.2250769

KEYWORDS: Light emitting diodes, Ultraviolet radiation, Time resolved spectroscopy, Diagnostics, Xenon, Light sources, Luminescence, Signal to noise ratio, In vitro testing, Europium, Ultraviolet light emitting diodes, Signal detection

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Proceedings Article | 7 March 2016 Presentation + Paper

Mid-IR supercontinuum generation beyond 7 μm using a silica-fluoride-chalcogenide fiber cascade

Christian Petersen, Peter Moselund, Uffe Møller, Ole Bang

Proceedings Volume 9703, 97030A (2016) https://doi.org/10.1117/12.2209253

KEYWORDS: Supercontinuum generation, Mid-IR, Chalcogenides, Optical fibers, Spectroscopy, Nonlinear optics, Fiber optics, ZBLAN, Silica, Photonics, Fiber amplifiers, Neodymium

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Proceedings Article | 4 March 2016 Paper

Mid-infrared nonlinear upconversion imaging and sensing

Christian Pedersen, Peter Tidemand-Lichtenberg

Proceedings Volume 9731, 97310X (2016) https://doi.org/10.1117/12.2218617

KEYWORDS: Mid-IR, Upconversion, Nonlinear crystals, Sensors, Second-harmonic generation, Absorption, Crystals, Signal detection, Spectroscopy, Molecules

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Proceedings Article | 8 March 2014 Paper

Impact of primary aberrations on coherent lidar performance

Qi Hu, Peter John Rodrigo, Theis F. Iversen, Christian Pedersen

Proceedings Volume 8992, 89920T (2014) https://doi.org/10.1117/12.2037179

KEYWORDS: LIDAR, Monochromatic aberrations, Transceivers, Computer simulations, Antennas, Electroluminescent displays, Lens design, Scanners, Signal detection

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Proceedings Article | 8 March 2014 Paper

Influence of laser frequency noise on scanning Fabry-Perot interferometer based laser Doppler velocimetry

Peter John Rodrigo, Christian Pedersen

Proceedings Volume 8992, 899208 (2014) https://doi.org/10.1117/12.2040274

KEYWORDS: Doppler effect, Laser Doppler velocimetry, Stereolithography, Fiber lasers, Calibration, Heterodyning, Semiconductor lasers, Sensors, Fabry–Perot interferometry, Laser sources

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Proceedings Article | 20 February 2014 Paper

Non-collinear upconversion of incoherent light: designing infrared spectrometers and imaging systems

Jeppe Seidelin Dam, Qi Hu, Christian Pedersen, Peter Tidemand-Lichtenberg

Proceedings Volume 8964, 89640F (2014) https://doi.org/10.1117/12.2039658

KEYWORDS: Upconversion, Crystals, Imaging systems, Nonlinear crystals, Infrared radiation, Imaging spectroscopy, Mid-IR, Infrared imaging, Infrared spectroscopy, Phase matching

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Proceedings Article | 20 February 2014 Paper

Upconversion enhanced degenerate four-wave mixing in the mid-infrared for sensitive detection of acetylene in gas flows

Lasse Høgstedt, Jeppe Seidelin Dam, Anna-Lena Sahlberg, Zhongshan Li, Marcus Aldén, Christian Pedersen, Peter Tidemand-Lichtenberg

Proceedings Volume 8964, 89641H (2014) https://doi.org/10.1117/12.2039243

KEYWORDS: Sensors, Scattering, Upconversion, Mid-IR, Signal detection, Light scattering, Four wave mixing, Cameras, Combustion, Crystals

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Proceedings Article | 20 February 2014 Paper

Mid infrared upconversion spectroscopy using diffuse reflectance

Nicolai Sanders, Louis Kehlet, Jeppe Seidelin Dam, Peter Tidemand-Lichtenberg, Pablo Beato, Christian Pedersen

Proceedings Volume 8964, 89641K (2014) https://doi.org/10.1117/12.2039539

KEYWORDS: Upconversion, Diffuse reflectance spectroscopy, Mid-IR, Reflectance spectroscopy, Zeolites, FT-IR spectroscopy, Spectroscopy, Crystals, Light sources, Light scattering

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Proceedings Article | 20 February 2014 Paper

Near diffraction limited mid-IR spectromicroscopy using frequency upconversion

Nicolai Sanders, Jeppe Seidelin Dam, Peter Tidemand-Lichtenberg, Christian Pedersen

Proceedings Volume 8964, 89641L (2014) https://doi.org/10.1117/12.2039615

KEYWORDS: Mid-IR, Upconversion, Diffraction, Imaging spectroscopy, Spectroscopy, Microscopes, Image processing, Crystals, Nonlinear crystals, Microscopy

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Proceedings Article | 29 May 2013 Paper

Continuous-wave near-photon counting spectral imaging detector in the mid-infrared by upconversion

Jeppe Seidelin Dam, Peter Tidemand-Lichtenberg, Christian Pedersen

Proceedings Volume 8726, 87260X (2013) https://doi.org/10.1117/12.2015732

KEYWORDS: Upconversion, Cameras, Infrared cameras, Infrared imaging, Mid-IR, Visible radiation, Sensors, Nonlinear crystals, Infrared radiation, Crystals

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Proceedings Article | 12 March 2013 Paper

Multispectral mid-infrared imaging using frequency upconversion

Nicolai Sanders, Jeppe Seidelin Dam, Ole Bjarlin Jensen, Peter Tidemand-Lichtenberg, Christian Pedersen

Proceedings Volume 8604, 86040R (2013) https://doi.org/10.1117/12.2003947

KEYWORDS: Upconversion, Mid-IR, Crystals, Infrared imaging, Multispectral imaging, Infrared radiation, Imaging spectroscopy, Optical filters, Semiconductor lasers, Nonlinear crystals

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Proceedings Article | 12 March 2013 Paper

High resolution mid-infrared spectroscopy based on frequency upconversion

Jeppe Seidelin Dam, Qi Hu, Peter Tidemand-Lichtenberg, Christian Pedersen

Proceedings Volume 8604, 86040S (2013) https://doi.org/10.1117/12.2004012

KEYWORDS: Upconversion, Crystals, Spectral resolution, Mid-IR, Fabry–Perot interferometers, Spectroscopy, Nonlinear crystals, Laser crystals, Infrared radiation, Interferometers

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Proceedings Article | 5 March 2013 Paper

New horizons for supercontinuum light sources: from UV to mid-IR

Carsten Thomsen, Frederik Nielsen, Jeppe Johansen, Christian Pedersen, Peter Moselund, Uffe Møller, Simon T. Sørensen, Casper Larsen, Ole Bang

Proceedings Volume 8637, 86370T (2013) https://doi.org/10.1117/12.2008860

KEYWORDS: Mid-IR, Supercontinuum sources, Fiber lasers, Solitons, ZBLAN, Ultraviolet radiation, Mode locking, Light sources, Photonics, Continuous wave operation

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Proceedings Article | 8 May 2012 Paper

High-speed polarization-sensitive OCT at 1060 nm using a Fourier domain mode-locked swept source

Sebastian Marschall, Teresa Torzicky, Thomas Klein, Wolfgang Wieser, Michael Pircher, Erich Götzinger, Stefan Zotter, Marco Bonesi, Benjamin Biedermann, Christian Pedersen, Robert Huber, Christoph Hitzenberger, Peter Andersen

Proceedings Volume 8427, 84271D (2012) https://doi.org/10.1117/12.922313

KEYWORDS: Optical coherence tomography, Polarization, In vivo imaging, Image segmentation, Imaging systems, Eye, Retina, Sclera, Mode locking, Light sources

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Proceedings Article | 18 February 2012 Paper

Broadband Fourier domain mode-locked laser for optical coherence tomography at 1060 nm

Sebastian Marschall, Thomas Klein, Wolfgang Wieser, Teresa Torzicky, Michael Pircher, Benjamin Biedermann, Christian Pedersen, Christoph Hitzenberger, Robert Huber, Peter Andersen

Proceedings Volume 8213, 82130R (2012) https://doi.org/10.1117/12.906148

KEYWORDS: Optical coherence tomography, Modulation, Absorption, Light sources, Tunable filters, Point spread functions, Mode locking, Eye, Resonators, Laser optics

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Proceedings Article | 15 February 2012 Paper

Improved space bandwidth product in image upconversion

Jeppe Dam, Christian Pedersen, Peter Tidemand-Lichtenberg

Proceedings Volume 8240, 82400F (2012) https://doi.org/10.1117/12.908372

KEYWORDS: Upconversion, Nonlinear crystals, Image processing, Crystals, Image restoration, Image acquisition, Sum-frequency generation, Image resolution, Laser crystals, Continuous wave operation

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Proceedings Article | 9 February 2012 Paper

Comparative study of the performance of semiconductor laser based coherent Doppler lidars

Peter John Rodrigo, Christian Pedersen

Proceedings Volume 8241, 824112 (2012) https://doi.org/10.1117/12.908800

KEYWORDS: Semiconductor lasers, Stereolithography, LIDAR, Sensors, Doppler effect, Optical amplifiers, Molybdenum, Signal to noise ratio, Fiber lasers, Semiconductors

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Proceedings Article | 4 March 2011 Paper

Passive synchronized Q-switching between a quasi-three-level and a four-level laser

Haynes Cheng, Peter Tidemand-Lichtenberg, Ole Jensen, Peter Andersen, Paul Michael Petersen, Christian Pedersen

Proceedings Volume 7912, 79120W (2011) https://doi.org/10.1117/12.873382

KEYWORDS: Pulsed laser operation, Q switches, Q switched lasers, Nd:YAG lasers, Laser damage threshold, Mirrors, Ultraviolet radiation, Semiconductor lasers, Q switching, Laser crystals

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Proceedings Article | 22 February 2011 Paper

High resolution 2D image upconversion of incoherent light

Jeppe Dam, Christian Pedersen, Peter Tidemand-Lichtenberg

Proceedings Volume 7917, 791713 (2011) https://doi.org/10.1117/12.873790

KEYWORDS: Upconversion, Image resolution, Near infrared, Image processing, Crystals, Quantum efficiency, Nonlinear crystals, CCD cameras, Sensors, Sum-frequency generation

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Proceedings Article | 22 February 2011 Paper

A simple model for 2D image upconversion of incoherent light

Jeppe Dam, Christian Pedersen, Peter Tidemand-Lichtenberg

Proceedings Volume 7917, 791714 (2011) https://doi.org/10.1117/12.873820

KEYWORDS: Upconversion, Quantum efficiency, Crystals, Infrared imaging, Nonlinear crystals, Sum-frequency generation, Imaging devices, Photons, Complex systems, Phase matching

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Proceedings Article | 17 May 2010 Paper

High-power FDML laser for swept source-OCT at 1060 nm

Sebastian Marschall, Thomas Klein, Wolfgang Wieser, Benjamin Biedermann, Kevin Hsu, Bernd Sumpf, Karl-Heinz Hasler, Götz Erbert, Ole Jensen, Christian Pedersen, Robert Huber, Peter Andersen

Proceedings Volume 7715, 77150B (2010) https://doi.org/10.1117/12.854238

KEYWORDS: Optical amplifiers, Fiber amplifiers, Light sources, Semiconductor optical amplifiers, Optical coherence tomography, Point spread functions, Resonators, Tunable filters, Fiber couplers, High power lasers

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Proceedings Article | 17 May 2010 Paper

Autofluorescence of pigmented skin lesions using a pulsed UV laser with synchronized detection: clinical results

Haynes P. Cheng, Pontus Svenmarker, Haiyan Xie, Peter Tidemand-Lichtenberg, Ole Jensen, Niels Bendsoe, Katarina Svanberg, Paul Michael Petersen, Christian Pedersen, Stefan Andersson-Engels, Peter Andersen

Proceedings Volume 7715, 77151K (2010) https://doi.org/10.1117/12.855837

KEYWORDS: Luminescence, Skin, Ultraviolet radiation, Camera shutters, Pulsed laser operation, Image filtering, CCD cameras, Liquid crystals, Signal detection, Semiconductor lasers

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Proceedings Article | 20 February 2010 Paper

FDML swept source at 1060 nm using a tapered amplifier

Sebastian Marschall, Thomas Klein, Wolfgang Wieser, Benjamin Biedermann, Kevin Hsu, Bernd Sumpf, Karl-Heinz Hasler, Götz Erbert, Ole Jensen, Christian Pedersen, Robert Huber, Peter Andersen

Proceedings Volume 7554, 75541H (2010) https://doi.org/10.1117/12.842011

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Proceedings Article | 20 February 2009 Paper

Frequency-swept laser light source at 1050 nm with higher bandwidth due to multiple semiconductor optical amplifiers in series

Sebastian Marschall, Lars Thrane, Peter Andersen, Christian Pedersen, Kevin Hsu

Proceedings Volume 7168, 716824 (2009) https://doi.org/10.1117/12.809068

KEYWORDS: Light sources, Resonators, Point spread functions, Optical filters, Semiconductor optical amplifiers, Laser resonators, Semiconductor lasers, Optical amplifiers, Optical coherence tomography, Optical isolators

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Proceedings Article | 19 February 2008 Paper

300 mW of coherent light at 488 nm using a generic approach

Emir Karamehmedović, Christian Pedersen, Martin Andersen, Peter Tidemand-Lichtenberg

Proceedings Volume 6875, 687512 (2008) https://doi.org/10.1117/12.762876

KEYWORDS: Sum-frequency generation, Ferroelectric materials, Visible radiation, Solid state lasers, Frequency conversion, Ultraviolet radiation, Diodes, Continuous wave operation, Diode pumped solid state lasers

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Showing 5 of 36 publications

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