Dr. Alexander Olowinsky Profile

Dr. Alexander Olowinsky

Project Coordinator of the PolyBright project at Fraunhofer-Institut für Lasertechnik

SPIE Involvement:

Author

Publications (19)

Proceedings Article | 15 March 2023 Presentation + Paper

Influence of ring-shaped laser beam during welding of AW-5083 and AW-6082

S. Hollatz, M. Hummel, M. Lach, A. Olowinsky, A. Gillner, C. Häfner, F. Beckmann, J. Moosmann

Proceedings Volume 12414, 124140C (2023) https://doi.org/10.1117/12.2649092

KEYWORDS: Solids, Bubbles, Laser welding, X-rays, Aluminum, Capillaries, Alloys, Scintillators, Ring lasers, Modulation

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Proceedings Article | 15 March 2023 Presentation + Paper

In situ synchrotron observation of the vapor capillary geometry in laser welding of copper with 1030 nm and 515 nm laser beam sources

Marc Hummel, Christian Meier, Alexander Olowinsky, Arnold Gillner, Felix Beckmann, Julian Moosmann, Constantin Häfner

Proceedings Volume 12414, 124140A (2023) https://doi.org/10.1117/12.2648946

KEYWORDS: Capillaries, Porosity, Copper, Synchrotrons, Laser welding, Image processing, Laser radiation, Reflection, Scintillators, Light absorption

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Proceedings Article | 5 March 2021 Presentation + Paper

Investigation of the laser-based joining technique for PCBs with locally thickened layers using a cold gas spraying process

Woo-Sik Chung, Gyeongwan Jo, Alexander Olowinsky

Proceedings Volume 11674, 116740D (2021) https://doi.org/10.1117/12.2585101

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Proceedings Article | 5 March 2021 Presentation + Paper

Combined laser beam soldering and welding process for electrical contacting

J. Helm, A. Meise, A. Olowinsky

Proceedings Volume 11674, 116741C (2021) https://doi.org/10.1117/12.2577578

KEYWORDS: Laser welding, Ultrasonics, Semiconductors, Connectors, Resistance, Laser processing, Laser applications, Aluminum

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Proceedings Article | 9 March 2015 Paper

Laser transmission welding of absorber-free thermoplastics using dynamic beam superposition

Viktor Mamuschkin, Alexander Olowinsky, Kira van der Straeten, Christoph Engelmann

Proceedings Volume 9356, 93560Y (2015) https://doi.org/10.1117/12.2079691

KEYWORDS: Superposition, Absorption, Laser welding, Interfaces, Mirrors, Laser scattering, Scattering, Laser applications, Copper, Laser scanners

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Proceedings Article | 9 March 2015 Paper

Laser transmission welding of long glass fiber reinforced thermoplastics

Kira van der Straeten, Christoph Engelmann, Alexander Olowinsky, Arnold Gillner

Proceedings Volume 9356, 93560H (2015) https://doi.org/10.1117/12.2079566

KEYWORDS: Laser welding, Fiber lasers, Glasses, Polymers, Transmittance, Laser applications, Fiber reinforced polymers, Adhesives, Optical properties, Laser bonding

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Proceedings Article | 6 March 2014 Paper

Investigations on laser transmission welding of absorber-free thermoplastics

Viktor Mamuschkin, Alexander Olowinsky, Simon Britten, Christoph Engelmann

Proceedings Volume 8968, 896815 (2014) https://doi.org/10.1117/12.2039703

KEYWORDS: Laser welding, Interfaces, Absorption, Polymers, Optical properties, Glasses, Semiconductor lasers, Absorbance, Biomedical optics, Carbon

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Proceedings Article | 6 March 2014 Paper

Quasi-simultaneous laser soldering for the interconnection of back-contact solar cells with composite foils

Simon Britten, Rumitha Seva Bala Sundaram, Alexander Olowinsky, Arnold Gillner

Proceedings Volume 8968, 89680V (2014) https://doi.org/10.1117/12.2040523

KEYWORDS: Solar cells, Composites, Copper, Laser welding, Laser ablation, Laser scanners, Laser processing, Absorption, Laser systems engineering, Semiconducting wafers

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Proceedings Article | 21 February 2011 Paper

Extending the process limits of laser polymer welding with high-brilliance beam sources (recent status and prospects of POLYBRIGHT)

A. Olowinsky, A. Boglea

Proceedings Volume 7921, 792107 (2011) https://doi.org/10.1117/12.874554

KEYWORDS: Polymers, Laser welding, Laser processing, Fiber lasers, Absorption, Laser development, Semiconductor lasers, Laser applications, Laser sources, Manufacturing

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Proceedings Article | 12 June 2007 Paper

Fine micro-welding of thin metal sheet by high speed laser scanning

Yasuhiro Okamoto, Arnold Gillner, Alexander Olowinsky, Jens Gedicke, Yoshiyuki Uno

Proceedings Volume 6593, 65930D (2007) https://doi.org/10.1117/12.722161

KEYWORDS: Fiber lasers, Single mode fibers, Laser welding, Nd:YAG lasers, Pulsed laser operation, Metals, Laser scanners, Distortion, Laser applications, Continuous wave operation

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Proceedings Article | 26 April 2006 Paper

High-precision and high-speed laser microjoining for electronics and microsystems

Arnold Gillner, Alexander Olowinsky, Kilian Klages, Jens Gedicke, Fahri Sari

Proceedings Volume 6161, 616102 (2006) https://doi.org/10.1117/12.674979

KEYWORDS: Copper, Laser welding, Laser applications, Metals, Microsystems, Fusion energy, Electronics, Manufacturing, Nd:YAG lasers, Solids

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The joining processes in electronic device manufacturing are today still dominated by conventional joining techniques like press fitting, crimping and resistance welding. Laser beam joining techniques have been under intensive investigations and subsequently new processes for mass manufacturing and high accuracy assembling were established. With the newly developed SHADOW^(R) welding technology technical aspects such as tensile strength, geometry and precision of the weld could be improved. This technology provides highest flexibility in weld geometry with a minimum welding time as well as new possibilities in using application adapted materials. Different parts and even different metals can be joined by a non-contact process. The application of a relative movement between the laser beam and the part to be joined at feed rates of up to 60 m/min produces weld seams with a length from 0.6 mm to 15.7 mm using a pulsed Nd:YAG laser with a pulse duration of up to 50 ms. Due to the low energy input, typically 1 J to 6 J, a weld width as small as 50 μm and a weld depth as small as 20 pm have been attained. This results in low distortion of the joined watch components. Within this paper this new welding process will be explained and several examples of joined components will be presented with respect to fundamentals and the sustainable implementation of the SHADOW^(R) welding technique into watch manufacturing and electronic industry. For microsystem applications the laser joining technology is modified to join even silicon and glass parts without any melting based on the formation of a thermally induced oxygen bond. New fields of applications for joining different materials such as steel to brass or steel to copper for electrical interconnects will be discussed. Here the SHADOW^(R) welding technique offers new possibilities for the combination of good electrical properties of copper with high mechanical stiffness of steel. The paper will give a closer look to microjoining applications especially using the SHADOW^(R) welding technique. Basics of the process as well as its application on dedicated examples will be shown for small parts such as axis-wheel combinations and electrical connectors.

Proceedings Article | 8 October 2004 Paper

SHADOW a new welding technique: basics and applications

Alexander Olowinsky, Kilian Klages, Jens Gedicke

Proceedings Volume 5662, (2004) https://doi.org/10.1117/12.596351

KEYWORDS: Laser welding, Copper, Pulsed laser operation, Continuous wave operation, Nd:YAG lasers, Metals, Distortion, Manufacturing, Contamination, Electronics

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Proceedings Article | 18 November 2003 Paper

Laser beam micro-welding of dissimilar metals

Kilian Klages, Arnold Gillner, Alexander Olowinsky, Sandra Fronczek, Armin Studt

Proceedings Volume 5063, (2003) https://doi.org/10.1117/12.540557

KEYWORDS: Copper, Metals, Laser sources, Zinc, Chemical elements, Pulsed laser operation, Distortion, Nd:YAG lasers, Chemical analysis, Solids

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Proceedings Article | 17 October 2003 Paper

Laser beam soldering: an attractive alternative to conventional soldering technologies

Luedger Bosse, Andreas Koglin, Alexander Olowinsky, Volker Kolauch, Michael Nover

Proceedings Volume 4977, (2003) https://doi.org/10.1117/12.478609

KEYWORDS: Lead, Mirrors, Signal detection, Sensors, Signal processing, Reliability, Aluminum, Laser welding, Hybrid circuits, Ceramics

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Proceedings Article | 17 October 2003 Paper

Out of the SHADOW: watch parts in the spotlight -- laser beam microwelding of delicate watch components

Thorsten Kramer, Alexander Olowinsky

Proceedings Volume 4977, (2003) https://doi.org/10.1117/12.482627

KEYWORDS: Distortion, Pulsed laser operation, Laser sources, Nd:YAG lasers, Continuous wave operation, Laser applications, Manufacturing, Copper, Metals, Laser welding

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Proceedings Article | 24 April 2003 Paper

Laser beam microforming as a new adjustment technology using dedicated actuator structures

Alexander Olowinsky, Ludger Bosse

Proceedings Volume 5116, (2003) https://doi.org/10.1117/12.498626

KEYWORDS: Actuators, Microelectromechanical systems, High power diode lasers, Microsystems, Assembly tolerances, Smart sensors, Light emitting diodes, Packaging, Assembly equipment, Optical components

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Proceedings Article | 18 June 2002 Paper

Laser beam microwelding in the watch industry

Alexander Olowinsky, Thorsten Kramer, Friedrich Durand

Proceedings Volume 4637, (2002) https://doi.org/10.1117/12.470666

KEYWORDS: Laser welding, Nd:YAG lasers, Laser drilling, Continuous wave operation, Laser marking, Laser applications, Tolerancing, Manufacturing, Zinc, Contamination

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Proceedings Article | 18 June 2002 Paper

SHADOW: a new welding technique

Thorsten Kramer, Alexander Olowinsky, Friedrich Durand

Proceedings Volume 4637, (2002) https://doi.org/10.1117/12.470664

KEYWORDS: Pulsed laser operation, Copper, Laser welding, Contamination, Laser applications, Distortion, Continuous wave operation, Metals, Laser processing, Pulsed laser deposition

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