Mr. Christian Wessling Profile

Christian Wessling

Manager Product Development at INGENERIC GmbH

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Publications (9)

Proceedings Article | 14 March 2018 Presentation

Micro optical components: key factor for demanding applications (Conference Presentation)

Stefan Hambücker, Christian Wessling, Tobias Haverkamp

Proceedings Volume 10513, 105130C (2018) https://doi.org/10.1117/12.2298769

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Proceedings Article | 26 February 2013 Paper

Micro-lens arrays for laser beam homogenization and transformation

V. Sinhoff, S. Hambuecker, K. Kleine, O. Ruebenach, C. Wessling

Proceedings Volume 8605, 860509 (2013) https://doi.org/10.1117/12.2002433

KEYWORDS: Homogenization, Semiconductor lasers, Collimation, Manufacturing, Optics manufacturing, Diodes, Chemical elements, Neodymium, Vertical cavity surface emitting lasers, Beam shaping

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Proceedings Article | 26 February 2013 Paper

Laser-bar stack using ELF heat-sinks mounted kinematically for double-sided cooling

A. Chin, J. Manni, R. Chin, J. Levy, M. Dogan, J. Jacob, R. Pathak, C. Wessling, K. Lang, H. Eppich, J. Fryer, T. Haverkamp

Proceedings Volume 8605, 86050P (2013) https://doi.org/10.1117/12.2002230

KEYWORDS: Collimation, Kinematics, Diodes, Polarization, Selenium, Dielectrics, Laser applications, Laser cutting, High power lasers, Fiber lasers

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Proceedings Article | 18 February 2013 Paper

Efficient pumping of inertial fusion energy lasers

C. Wessling, O. Rübenach, S. Hambücker, V. Sinhoff, S. Banerjeea, K. Ertel, P. Mason

Proceedings Volume 8602, 86020I (2013) https://doi.org/10.1117/12.2003654

KEYWORDS: Semiconductor lasers, Diodes, Fusion energy, Laser development, Homogenization, Optical amplifiers, Collimation, Beam shaping, Optical testing, Waveguides

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Solid-state lasers have been demonstrated as attractive drivers for laser-plasma interaction and have presently been developed for various applications like inertial confinement fusion (ICF) [1], particle acceleration and intense X-ray generation [3]. Viable real world applications like power production at industrial scale will require high laser system efficiency, repetition rate and lifetime which are only possible with semiconductor diode pumping. The paper describes the work conducted with two 20 kW diode laser sources pumping an ytterbium:YAG laser amplifier. The set-up acts as a small scale prototype for the DiPOLE project [2]. This project aims to develop scalable gas cooled cryogenic multi-slab diode pumped solid state lasers capable of producing KJ pulse energy. A scale-down prototype is currently under development at the Central Laser Facility (CLF) designed to generate 10 J at 10 Hz. To secure an efficient pumping process the sources have to fulfill aside power requirement in the spectral and time domain, the claim for high homogenization and low divergence of the spatial and angular beam distribution as well as a minimization of losses within the optical path. The existing diode laser sources designed and built by INGENERIC deliver 20 kW pulsed power, concentrated on a plateau of FWHM dimension of 20 x 20 mm² with a homogeneity of more than 90 %. The center wavelength of 939.5 nm is controlled in a range of ± 0.1 nm. The time and area integrated spectrum of at least 76 % of the total energy is contained within a 6 nm wide wavelength band around the center wavelength. Repetition rates can be adjusted between 0.1 Hz up to 10 Hz with rise and fall times less than 50 μs and pulse durations from 0.2 ms to 1.2 ms. The paper describes the impact of different designs on the performance of pump sources and puts special emphasis on the influence of the optical components on efficiency and performance. In addition the influence of the measuring principle is discussed.

Proceedings Article | 24 February 2009 Paper

100 W/100 um passively cooled fiber coupled diode laser at 976 nm based on multiple 100 um single emitters

Marcel Werner, Christian Wessling, Stefan Hengesbach, Martin Traub, Hans-Dieter Hoffmann

Proceedings Volume 7198, 71980P (2009) https://doi.org/10.1117/12.810487

KEYWORDS: Semiconductor lasers, Fiber couplers, Fiber lasers, Aspheric lenses, Fiber coupled lasers, Silica, Polarization, Optical alignment, Cladding, Optical design

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Proceedings Article | 25 February 2008 Paper

50 W passively cooled, fiber coupled diode laser at 976 nm for pumping fiber lasers using 100 um fiber bundles

C. Wessling, St. Hengesbach, J. Geiger, J. Dolkemeyer, M. Traub, D. Hoffmann

Proceedings Volume 6876, 687614 (2008) https://doi.org/10.1117/12.763739

KEYWORDS: Semiconductor lasers, Fiber lasers, Fiber couplers, Fiber coupled lasers, Collimation, Mirrors, Broad area laser diodes, Electro optical modeling, Polarization, Microlens array

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Proceedings Article | 7 February 2007 Paper

Wavelength stabilization of HPDL array: fast-axis collimation optic with integrated VHG

C. Schnitzler, S. Hambuecker, O. Ruebenach, V. Sinhoff, G. Steckman, L. West, C. Wessling, D. Hoffmann

Proceedings Volume 6456, 645612 (2007) https://doi.org/10.1117/12.698334

KEYWORDS: Semiconductor lasers, Collimation, Diffraction, Holography, Optical arrays, Integrated optics, Tolerancing, Lens design, Manufacturing, Volume holography

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Proceedings Article | 7 February 2007 Paper

Fiber coupled diode laser of high spectral and spatial beam quality with kW class output power

Christian Wessling, Martin Traub, Dieter Hoffmann

Proceedings Volume 6456, 645611 (2007) https://doi.org/10.1117/12.708567

KEYWORDS: Semiconductor lasers, Diffraction gratings, Multiplexing, Diffraction, Fiber couplers, Collimation, Fiber lasers, Fiber coupled lasers, High power diode lasers, Solid state lasers

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Proceedings Article | 15 February 2006 Paper

Dense wavelength multiplexing for a high power diode laser

Christian Wessling, Martin Traub, Dieter Hoffmann, Reinhart Poprawe

Proceedings Volume 6104, 61040O (2006) https://doi.org/10.1117/12.644614

KEYWORDS: Semiconductor lasers, Diffraction gratings, Collimation, High power diode lasers, Diffraction, Multiplexing, Dielectrics, Glasses, Refractive index, Fiber lasers

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