Dr. Marcus Duelk Profile

Dr. Marcus Duelk

CTO at EXALOS AG

SPIE Involvement:

Author

Publications (28)

Proceedings Article | 13 March 2024 Paper

Green multi-SLED source for high-resolution visible OCT

M. Duelk, N. Primerov, J. Rios, S. Gloor, C. Jobson, T. von Niederhäusern, M. Malinverni, A. Castiglia, M. Rossetti, C. Vélez

Proceedings Volume 12830, 1283004 (2024) https://doi.org/10.1117/12.3005651

KEYWORDS: Light sources, Relative intensity noise, Optical coherence tomography, Polarization, Visible radiation, Tissues

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Proceedings Article | 12 March 2024 Paper

Red, green, and blue edge-emitting devices for beam scanning light engine architectures: from single emitters to arrays

M. Rossetti, A. Castiglia, M. Malinverni, A. Ferhatovic, D. Martin, M. Duelk, C. Vélez

Proceedings Volume 12913, 129130S (2024) https://doi.org/10.1117/12.3000076

KEYWORDS: Semiconductor lasers, Anodes, Coating, Semiconducting wafers, Aluminium gallium indium phosphide, Superluminescent diodes, Power consumption, Modulation, Indium gallium aluminum nitride

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Proceedings Article | 12 March 2024 Paper

Compact RGB module with blue, green LDs and red SLED and collinearly aligned collimated output beams

N. Primerov, C. Jobson, J. Rios, S. Gloor, N. Matuschek, T. von Niederhäusern, M. Rossetti, A. Castiglia, M. Malinverni, M. Duelk, C. Vélez

Proceedings Volume 12913, 129130P (2024) https://doi.org/10.1117/12.3001926

KEYWORDS: Collimation, RGB color model, Beam diameter, Light sources, Beam divergence, Optical alignment, Prisms, Emission wavelengths

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Proceedings Article | 8 March 2024 Presentation + Paper

Silicon nitride photonic integrated circuits for optical coherence tomography

Rainer Hainberger, Paul Müllner, Moritz Eggeling, Alejandro Maese-Novo, Yevhenii Morozov, Stefan Nevlacsil, Pietro Cipriano, Desiree Rist, Martin Sagmeister, Jochen Kraft, Stefan Richter, Michael Kempe, Stefan Gloor, Marcus Duelk, Nanko Verwaal, Gunay Yurtsever, Mathias Berciano, Filippo Ferraro, Pol Van Dorpe, Anja Agneter, Quang Nguyen, Elisabet Rank, Wolfgang Drexler, Mareike Trappen, Matthias Blaicher, Michael Thiel, Sharon Butler, Kamil Gradkowski, Padraic Morrissey, Peter O'Brien, Marko Vlaskovic, Horst Zimmermann, Dana Seyringer

Proceedings Volume 12890, 1289006 (2024) https://doi.org/10.1117/12.2692816

KEYWORDS: Optical coherence tomography, Photonic integrated circuits, Polarization, Waveguides, Simulations, Silicon nitride, Photodiodes, Arrayed waveguide gratings

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Proceedings Article | 8 March 2024 Paper

The crucial role of InAlN for blue and green LDs and SLEDs with low power consumption

M. Malinverni, A. Castiglia, M. Rossetti, A. Ferhatovic, D. Martin, M. Duelk, C. Vélez

Proceedings Volume 12886, 128860A (2024) https://doi.org/10.1117/12.3000476

KEYWORDS: Cladding, Aluminum gallium nitride, Power consumption, Refractive index, Reflectivity, Gallium nitride, Doping, Design, Color, Waveguides

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Proceedings Article | 7 August 2023 Paper

Ultracompact RGB hybrid LD-SLED module based on micro-optics

N. Primerov, C. Jobson, J. Rios, S. Gloor, N. Matuschek, T. von Niederhäusern, M. Rossetti, A. Castiglia, M. Malinverni, M. Duelk, C. Vélez

Proceedings Volume 12624, 1262415 (2023) https://doi.org/10.1117/12.2675600

KEYWORDS: RGB color model, Beam diameter, Collimation, Beam divergence, Light sources, Optical alignment, Lenses, Emission wavelengths

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Proceedings Article | 8 March 2023 Poster + Paper

Integrated 840nm high-power dual-polarization SLED source

S. Gloor, J. Rios, N. Primerov, N. Matuschek, M. Duelk

Proceedings Volume 12367, 1236711 (2023) https://doi.org/10.1117/12.2647967

KEYWORDS: Polarization, Optical coherence tomography, Light sources, Collimation, Biological samples, Tissues, Reflection, Optical benches, Optical alignment, Multiplexing

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Proceedings Article | 7 March 2022 Presentation

Multi-channel 400 kHz 840nm swept-source OCT system based on a photonic-electronic integrated circuit

Stefan Richter, Arno Krause, Eisabet Rank, Stefan Nevlacsil, Michael Kempe, Paul Muellner, Rainer Hainberger, Stefan Gloor, Marcus Duelk, Nanko Verwaal, Leonhard Klein, Martin Sagmeister, Gerald Meinhardt, Jochen Kraft, Moises Jezzini, Daniel Carey, Wolfgang Drexler

Proceedings Volume PC11948, PC119480K (2022) https://doi.org/10.1117/12.2612285

KEYWORDS: Optical coherence tomography, Photonic integrated circuits, Integrated circuits, Eye, Multiplexing, Data acquisition, Retina, Interferometers, Image acquisition, Eye models

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Proceedings Article | 7 March 2022 Presentation

In vivo retinal swept source optical coherence tomography using photonic integrated circuits centered at 840 nm

Elisabet Rank, Stefan Nevlacsil, Stefan Richter, Arno Krause, Michael Kempe, Paul Muellner, Rainer Hainberger, Stefan Gloor, Marcus Duelk, Nanko Verwaal, Leonhard Klein, Martin Sagmeister, Desiree Rist, Gerald Meinhardt, Jochen Kraft, Ivan-Lazar Bundalo, Moises Jezzini, Matthias Salas, Rainer Leitgeb, Wolfgang Drexler

Proceedings Volume PC11941, PC1194110 (2022) https://doi.org/10.1117/12.2609563

KEYWORDS: Optical coherence tomography, Photonic integrated circuits, In vivo imaging, Imaging systems, Retinal scanning, Retina, Optoelectronics, Point-of-care devices, Mach-Zehnder interferometers, Integrated optics

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Proceedings Article | 5 March 2022 Presentation

Interfacing photonic building blocks for silicon nitride photonic-integrated circuit-based sensing devices

Rainer Hainberger, Paul Muellner, Stefan Nevlacsil, Moritz Eggeling, Florian Vogelbacher, Martin Sagmeister, Gerald Meinhardt, Karl Rohracher, Stefan Jessenig, Desiree Rist, Deborah Morecroft, Jochen Kraft, Nanko Verwaal, Leonhard Klein, Matthias Voelker, Moises Jezzini, Padraic Morrissey, Peter O'Brien, Stefan Gloor, Marcus Duelk, Stefan Richter, Michael Kempe, Elisabet Rank, Wolfgang Drexler

Proceedings Volume PC12007, PC120070K (2022) https://doi.org/10.1117/12.2606125

KEYWORDS: Photonic integrated circuits, Silicon, Photonic devices, Photodiodes, Waveguides, Polarization, Integrated optics, Visible radiation, Telecommunications, Structured optical fibers

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Proceedings Article | 9 December 2021 Paper

1300-nm ultra-broadband, high-power combined-SLED source integrated in 14-pin butterfly module for UHR-OCT

S. Gloor, J. Ojeda, N. Primerov, L. Merker, R. Rezzonico, T. von Niederhäusern, M. Duelk, C. Velez

Proceedings Volume 11924, 1192417 (2021) https://doi.org/10.1117/12.2616122

KEYWORDS: Optical coherence tomography, Absorption, Coherence (optics), Spectroscopy, Light sources, Dielectric filters, Superluminescent diodes, Spectral resolution, Optical filters, Optical benches

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Proceedings Article | 9 December 2021 Paper

Fiber-coupled 840-nm broadband SLED-SOA MOPA source integrated in 14-pin butterfly module with 60 mW output power

J. Ojeda, S. Gloor, L. Merker, N. Primerov, N. Matuschek, M. Duelk, C. Velez

Proceedings Volume 11924, 1192416 (2021) https://doi.org/10.1117/12.2616120

KEYWORDS: Coherence (optics), Optical isolators, Waveguides, Single mode fibers, Optical coherence tomography, Collimation, Semiconductor optical amplifiers, Optical benches, Light sources, Tissue optics

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Proceedings Article | 20 June 2021 Presentation + Paper

Ultracompact RGB laser diode module for near-to-eye displays

N. Primerov, J. Ojeda, S. Gloor, N. Matuschek, M. Rossetti, A. Castiglia, M. Malinverni, M. Duelk, C. Velez

Proceedings Volume 11788, 117880Q (2021) https://doi.org/10.1117/12.2594243

KEYWORDS: RGB color model, Collimation, Semiconductor lasers, Optical filters, Free space optics, Dielectric filters, Windows, Temperature sensors, Pulsed laser operation, Projection systems

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Proceedings Article | 9 March 2020 Presentation

Lipid sensitive OCT (Conference Presentation)

Laurin Ginner, Johanna Gesperger, Barbara Messner, Matthias Salas, Michael Niederleithner, Bettina Kapsch, Rainer Leitgeb, Marcus Duelk, Stefan Gloor, Philipp Vorreau

Proceedings Volume 11215, 1121504 (2020) https://doi.org/10.1117/12.2543158

KEYWORDS: Optical coherence tomography, Absorption, Aorta, Visualization, Light sources, Signal attenuation, Silver, Spectral resolution, Tissues, Endoscopes

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Proceedings Article | 21 February 2020 Paper

Combined-SLED source for UHR-OCT and SLO integrated in 14-pin butterfly module

S. Gloor, J. Ojeda, J. Dahdah, N. Primerov, M. Duelk, C. Velez

Proceedings Volume 11228, 112282N (2020) https://doi.org/10.1117/12.2549082

KEYWORDS: Scanning laser ophthalmoscopy, Optical coherence tomography, Light sources, Coherence (optics), Collimation, Retina, Imaging systems, Superluminescent diodes, Polarization, Single mode fibers

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Proceedings Article | 21 February 2020 Paper

840-nm broadband SLED-SOA MOPA source integrated in 14-pin butterfly module with 100+ mW free-space output power

Marcus Duelk, Stefan Gloor, Jose Ojeda, Jean Dahdah, Nicolai Matuschek, Raffaele Rezzonico, Christian Velez

Proceedings Volume 11228, 112282L (2020) https://doi.org/10.1117/12.2549134

KEYWORDS: Collimation, Free space optics, Optical coherence tomography, Light sources, Semiconductor optical amplifiers, Windows, Waveguides, Oscillators, Optical amplifiers, Superluminescent diodes

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Proceedings Article | 19 July 2019 Paper

Spectral domain and swept source optical coherence tomography on a photonic integrated circuit at 840nm for ophthalmic application

Elisabet Rank, Stefan Nevlacsil, Paul Müllner, Rainer Hainberger, Alejandro Maese-Novo, Marcus Dülk, Stefan Gloor, Matthias Völker, Nanko Verwaal, Gerald Meinhardt, Martin Sagmeister, Jochen Kraft, Padraic Morrissey, Moises Jezzini, Zhiheng Quan, Peter O'Brien, Stefan Richter, Michael Kempe, Dana Seyringer, Wolfgang Drexler

Proceedings Volume 11078, 110780U (2019) https://doi.org/10.1117/12.2526903

KEYWORDS: Optical coherence tomography, Photonic integrated circuits, Imaging systems, Waveguides, Tissues, In vivo imaging, Optical fibers, Light

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Proceedings Article | 19 July 2019 Paper

840-nm combined-SLED source integrated in 14-pin butterfly module with 140-nm bandwidth

S. Gloor, J. Dahdah, N. Primerov, T. von Niederhäusern, M. Duelk, C. Velez

Proceedings Volume 11078, 110780W (2019) https://doi.org/10.1117/12.2527047

KEYWORDS: Optical coherence tomography, Light sources, Optics manufacturing, Spectral resolution, Image resolution, Dielectric filters, Superluminescent diodes, Collimation, Free space optics

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Proceedings Article | 21 June 2019 Presentation + Paper

A compact red-green-blue superluminescent diode module: A novel light source for AR microdisplays

N. Primerov, J. Dahdah, S. Gloor, T. von Niederhäusern, N. Matuschek, A. Castiglia, M. Malinverni, C. Mounir, M. Rossetti, M. Duelk, C. Vélez

Proceedings Volume 11062, 110620F (2019) https://doi.org/10.1117/12.2527626

KEYWORDS: RGB color model, Collimation, Light sources, Beam shaping, Augmented reality, Heads up displays, Dielectric filters, Beam propagation method, Light emitting diodes, Free space optics

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Proceedings Article | 23 February 2018 Paper

Recent progress on GaN-based superluminescent light-emitting diodes in the visible range

A. Castiglia, M. Rossetti, M. Malinverni, C. Mounir, N. Matuschek, M. Duelk, C. Vélez

Proceedings Volume 10532, 105321X (2018) https://doi.org/10.1117/12.2287763

KEYWORDS: Light emitting diodes, Waveguides, Quantum wells, Gallium nitride, Speckle, Doping, Cladding, Crystals, Indium gallium nitride, Continuous wave operation

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Proceedings Article | 26 February 2016 Paper

GaN-based superluminescent diodes with long lifetime

A. Castiglia, M. Rossetti, N. Matuschek, R. Rezzonico, M. Duelk, C. Vélez, J-F. Carlin, N. Grandjean

Proceedings Volume 9748, 97481V (2016) https://doi.org/10.1117/12.2212699

KEYWORDS: Doping, Reliability, Gallium nitride, Magnesium, Superluminescent diodes, Semiconductor lasers, Light emitting diodes, Hydrogen, Waveguides, Diffusion

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Proceedings Article | 20 March 2013 Paper

FPGA-based real-time swept-source OCT systems for B-scan live-streaming or volumetric imaging

Vinzenz Bandi, Josef Goette, Marcel Jacomet, Tim von Niederhäusern, Adrian Bachmann, Marcus Duelk

Proceedings Volume 8571, 85712Z (2013) https://doi.org/10.1117/12.2006986

KEYWORDS: Signal processing, Field programmable gate arrays, Optical coherence tomography, Imaging systems, Visualization, Data processing, Signal to noise ratio, Data acquisition, Optical simulations, Computer simulations

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Proceedings Article | 20 March 2013 Paper

High-speed miniaturized swept sources based on resonant MEMS mirrors and diffraction gratings

S. Gloor, A. Bachmann, M. Epitaux, T. von Niederhäusern, P. Vorreau, N. Matuschek, K. Hsu, M. Duelk, C. Vélez

Proceedings Volume 8571, 85712X (2013) https://doi.org/10.1117/12.2007106

KEYWORDS: Microelectromechanical systems, Optical coherence tomography, Mirrors, Diffraction gratings, Signal to noise ratio, Coherence (optics), Neodymium, Optical alignment, Laser resonators, Laser optics

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Proceedings Article | 20 March 2013 Paper

FPGA-based non-uniform fast Fourier transform (NUFFT) algorithm for real-time OCT signal processing

A. Bossen, S. Remund, D. Ernst, Ch. Meier, T. von Niederhäusern, M. Duelk, K. Vemishetty

Proceedings Volume 8571, 85712Y (2013) https://doi.org/10.1117/12.2006391

KEYWORDS: Optical coherence tomography, Field programmable gate arrays, Signal processing, Fourier transforms, Computer simulations, Data acquisition, Digital signal processing, Convolution, Algorithm development, Imaging systems

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Proceedings Article | 16 February 2012 Paper

Superluminescent light emitting diodes: the best out of two worlds

M. Rossetti, J. Napierala, N. Matuschek, U. Achatz, M. Duelk, C. Vélez, A. Castiglia, N. Grandjean, J. Dorsaz, E. Feltin

Proceedings Volume 8252, 825208 (2012) https://doi.org/10.1117/12.912759

KEYWORDS: Light emitting diodes, Light sources, Gallium nitride, Waveguides, Semiconductor lasers, Visible radiation, Speckle, Temperature metrology, Superluminescent diodes

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Proceedings Article | 12 February 2011 Paper

Instantaneous coherence length measurement of a swept laser source using a Mach-Zehnder interferometer

Tim von Niederhäusern, Christoph Meier, Marcus Duelk, Philipp Vorreau

Proceedings Volume 7889, 78892R (2011) https://doi.org/10.1117/12.873769

KEYWORDS: Signal detection, Mach-Zehnder interferometers, Coherence (optics), Free space optics, Sensors, Signal processing, Laser sources, Interferometers, Optical coherence tomography, Imaging systems

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Proceedings Article | 20 February 2009 Paper

Isolator-free 840-nm broadband SLEDs for high-resolution OCT

M. Duelk, V. Laino, P. Navaretti, R. Rezzonico, C. Armistead, C. Vélez

Proceedings Volume 7168, 716821 (2009) https://doi.org/10.1117/12.809078

KEYWORDS: Polarization, Optical coherence tomography, Optical isolators, Coherence (optics), Diodes, Interferometers, Tolerancing, Imaging systems, Silver, Ophthalmology

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Proceedings Article | 8 July 2002 Paper

Next generation packet routers

Marcus Duelk, Jurgen Gripp, Jesse Simsarian, Ashish Bhardwaj, Pietro Bernasconi, Matthias Kauer, Martin Zirngibl, Oldrich Laznicka

Proceedings Volume 4872, (2002) https://doi.org/10.1117/12.475116

KEYWORDS: Switches, Switching, Receivers, Transmitters, Tunable lasers, Optical switching, Electronics, Clocks, Asynchronous transfer mode, Electro optics

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Showing 5 of 28 publications

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