ICALEO 2013 Paper #M404 (Beam Shaping Unit for Microprocessing on the Base of Refractive Beam Shapers)

Beam Shaping Unit for Microprocessing on the Base of Refractive Beam Shapers
Authors:
Alexander Laskin, Adloptica; Berlin Germany
Gintas Slekys, Altechna; Vilnius Lithuania
Nerijus Siaulys, Altechna; Vilnius Lithuania
Vadim Laskin, Adloptica; Berlin Germany
Presented at ICALEO 2013

Spatial beam shaping is very important in various laser microprocessing techniques like scribing, PCB drilling and others where scanning over working field with using galvo mirror scanners is used. Therefore, combining of beam shaping optics, converting Gaussian to flattop (uniform) laser beam irradiance profile, with scanning optical heads is an insistent technical task. As a p...

ICALEO 2013 Paper #M405 (Laser Micromachining of Bio-Absorbable Polymers: Impact of the Laser Process Parameters on the Machining Throughput and quality)

Laser Micromachining of Bio-Absorbable Polymers: Impact of the Laser Process Parameters on the Machining Throughput and quality
Authors:
Victor Matylitsky, High Q Laser GmbH; Rankweil Austria
Frank Hendricks, High Q Laser Gmbh; Rankweil Austria
Rajesh Patel, Spectra Physics; Sanat Clara CA USA
Presented at ICALEO 2013

High average power, high repetition rate femtosecond lasers with µJ pulse energies are increasingly used for material processing applications. With the introduction of femtosecond laser systems such as the SpiritTM platform developed by High Q Lasers and Spectra-Physics, micro-processing of solid targets with femtosecond laser pulses have obtained ne...

ICALEO 2013 Paper #M406 (New Micro and Nano Laser Machining Applications with a Versatile Ultrashort Pulse Laser System and Diffractive Optical Elements)

New Micro and Nano Laser Machining Applications with a Versatile Ultrashort Pulse Laser System and Diffractive Optical Elements
Authors:
Erwin Steiger, Erwin Steiger Laser Service; Olching Germany
Ulrich Radel, Topag Lasertechnik Gmbh; Darmstadt Germany
Siegfried Pause, Llt Applikation Gmbh; Ilmenau Germany
Presented at ICALEO 2013

We report on new industrial process developments and applications using an ultrashort pulse laser system with a mean power of 15 Watt and the ability to produce femtosecond to picosecond laser pulses with high pulse energies at 1030 nm, 515 nm, 343 nm and 257 nm in a single compact unit.
Precise and reproducible structuring of thin-film (CI...

ICALEO 2013 Paper #M407 (Expansion of Pulsed Laser Process Limits Through Pulsed Fiber Lasers)

Expansion of Pulsed Laser Process Limits Through Pulsed Fiber Lasers
Authors:
Christoph Ruettimann, Rofin-Lasag Ag; Thun Switzerland
Ulrich Duerr, Rofin-Lasag Ag; Thun Switzerland
Noemie Dury, Rofin-Lasag Ag; Thun Switzerland
Ronald Holtz, Class 4 Laser Professionals; Lyss Switzerland
Presented at ICALEO 2013

Pulsed Nd:YAG lasers are the state-of-the-art for a large number of micro-applications, and have provided remarkable performance in many applications including welding and drilling processes.
Thanks to the combination of several key characteristics, such as high beam quality, fast pumping diodes, and high speed electronics, a new generation of pulsed...

ICALEO 2013 Paper #M502 (Silicon Laser Micro-processing of New Energy Source Materials)

Silicon Laser Micro-processing of New Energy Source Materials
Authors:
Jun Duan, Huazhong University of Science and Technology; Wuhan
Huan Yang, Huazhong University of Science and Technology; Wuhan Peoples Republic of China
Xiaoyan Zeng, Huazhong University of Science and Technology; Wuhan
Leiming Deng, Huazhong University of Science and Technology; Wuhan
Presented at ICALEO 2013

In recent years, laser micromachining of semiconductor materials such as silicon and sapphire has attracted more and more attention. High power Diode Pumped Solid State (DPSS) lasers have been gained wider application in microelectronics, flat panel display, and solar cell m...

ICALEO 2013 Paper #M504 (Ultrafast Laser-Based Post-Processing of Parts Produced by Additive Manufacturing)

Ultrafast Laser-Based Post-Processing of Parts Produced by Additive Manufacturing
Authors:
Ilya Mingareev, Townes Laser Institute, University of Central Florida; Orlando FL USA
Tobias Bonhoff, Townes Laser Institute, University of Central Florida; Orlando FL USA
Ashraf El-Sherif, Townes Laser Institute, University of Central Florida; Orlando FL USA
Tim Biermann, Joining Technologies Research Center; East Granby CT USA
Wilhelm Meiners, Fraunhofer Ilt; Aachen Germany
Ingomar Kelbassa, Fraunhofer Ilt; Aachen Germany
Martin Richardson, Townes Laser Institute, University of Central Florida; Orlando FL USA
Presented at ICALEO 2013

ICALEO 2013 Paper #M601 (Structuring and joining transparent materials with ultra short pulse lasers)

Structuring and joining transparent materials with ultra short pulse lasers
Authors:
Sinisa Vukelic, -; -
Panjawat Kongsuwan, -; -
Y. Lawrence Yao, -; -
Presented at ICALEO 2013

Nonlinear absorption of femtosecond-laser pulses enables the induction of structural changes in the interior of bulk transparent materials without affecting their surface. Features are generated by focusing the femtosecond laser pulses in the interior of a single glass piece to investigate change in morphology, mechanical properties, and ring structures of the modified region. Detailed characterization of the effect of laser irradiation is accomplished using differential interference con...

ICALEO 2013 Paper #M603 (Remote Micro Welding with Multi-Mode and Single-Mode Fiber Lasers - a Comparison)

Remote Micro Welding with Multi-Mode and Single-Mode Fiber Lasers – a Comparison
Authors:
Andreas Patschger, Ernst-Abbe-Fachhochschule Jena; Jena Germany
Michael Guepner, Ernst-Abbe-Fachhochschule Jena; Jena Germany
Jens Bliedtner, Ernst-Abbe-Fachhochschule Jena; Jena Germany
Jean Pierre Bergmann, Technische Universitaet Ilmenau; Ilmenau Germany
Presented at ICALEO 2013

Both, multi-mode and single-mode lasers are well established in welding applications. In micro welding, single-mode lasers are often used while multi-mode lasers are more common regarding welding tasks in macro range. However, multi-mode lasers provide several advantages. Focal shifts du...

ICALEO 2013 Paper #M604 (Extension of the Process Boundaries for the Soldering of Elongated Interconnectors with a Simultaneous Energy Deposition)

Extension of the Process Boundaries for the Soldering of Elongated Interconnectors with a Simultaneous Energy Deposition
Authors:
Simon W. Britten, Fraunhofer Institute for Laser Technology Ilt; Aachen Germany
Wolfgang Fiedler, Fraunhofer Institute for Laser Technology Ilt; Aachen Germany
Alexander Olowinsky, Fraunhofer Institute for Laser Technology Ilt; Aachen Germany
Arnold Gillner, Fraunhofer Institute for Laser Technology Ilt; Aachen Germany
Presented at ICALEO 2013

Soldering processes are used to bond elongated interconnectors to metallized silicon wafers e.g. solar cells. The minimal process time is expected to be limited due to the maximal therm...

ICALEO 2013 Paper #M605 (Laser Joining of Charge-Collection Tapes Onto Cigs Photovoltaics Modules)

Laser Joining of Charge-Collection Tapes Onto Cigs Photovoltaics Modules
Authors:
Ralf Nett, Ruhr-Universitaet Bochum, Applied Laser Technolgy; Bochum Germany
Kerstin Kowalick, Ruhr-Universitaet Bochum, Applied Laser Technology; Bochum Germany
Manuel Joop, Ruhr-Universitaet Bochum, Applied Laser Technology; Bochum Germany
Benjamin Schoeps, Ruhr-Universitaet Bochum, Applied Laser Technology; Bochum Germany
Andreas Ostendorf, Ruhr-Universitaet Bochum, Applied Laser Technology; Bochum Germany
Christoph Ruettimann, Rofin-Lasag AG; Thun Switzerland
David Bremaud, FLISOM AG; Duebendorf Switzerland
Presented at ICALEO 2013

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