Combined Welding-Brazing Process for Joining AluminumSteel-Tailored Blanks with High Power Laser Sources

2002 ◽  
Author(s):  
Michael Kreimeyer ◽  
Florian Wagner ◽  
Gerd Sepold ◽  
Marion Joly ◽  
Bernard Criqui
Keyword(s):  
High Power ◽  
High Power Laser ◽  
Power Laser ◽  
Tailored Blanks ◽  
Laser Sources

Dynamic Thermal Thin Film Processing of Large Areas With High Power Laser Sources

2009 ◽  
Author(s):  
Frank Kubacki ◽  
Dirk Hauschild ◽  
Mikhail Ivanenko ◽  
Jens Meinschien ◽  
Andreas Bayer ◽  
...  
Keyword(s):  
Thin Film ◽  
High Power ◽  
Beam Profile ◽  
Laser Source ◽  
Free Form ◽  
High Power Laser ◽  
Power Laser ◽  
Semiconductor Wafer ◽  
Laser Sources ◽  
The Right

High power laser sources are used in various production tools for cutting, welding and hardening of metal parts and patterning, annealing and lithography of flat panel displays, solar cells and microelectronic devices. Beside the right choice of the laser source suitable high performance optical beam delivery and shaping systems are needed for generating the appropriate beam profile and intensity distribution are of high importance for the right processing speed, quality and yield. In addition to the typical laser processes with circular beam shapes LIMO has developed laser sources with line shaped beams for large area processing for e.g. crystallization and tempering of conducting and semi-conducting films on glass for FPD, PV and thermal processing of semiconductor wafer, coated float glass and sheet metal. Due to the high power density of several 100kW/cm2 and line length up to several hundred millimetres a treatment capacity of several m2 per minute and processing speeds up to 1 m/s can be achieved per laser head with typical scan & repeat processes. The use of multiple laser heads in one machine scales the productivity to the individual needs. The high scanning speed together with line widths of 0,01mm to 0,1mm is the basis for heating only a few microns of the surfaces layers and no costly cooling time is needed like with regular heating technologies. With this controlled surface heating even more sensitive materials can be processes like inks on polymers and paper for RFIDs, printed solar absorbers and coatings. For industrial applications equally important is an adequate understanding of the physics of the light-matter interaction behind the process. In advance simulations of the tool performance can minimize technical and financial risk as well as lead times for prototyping and introduction into series production. Based on this knowledge together with a unique free-form micro-lens array production technology and patented micro-optics beam shaping designs a number of novel production tool sub-systems have been built by LIMO: 1. a multi-kilowatt direct diode illumination modules for solar cell annealing, and crystallization; 2. a novel green laser beam line for the annealing of silicon thin films on glass; 3. a novel wavefront shaping optics that generates a top hat beam profile from a TEM00 high-power laser source for accurate thin film structuring. For each of these sub-system basic functionalities, design principles and performance results are presented with a special emphasis on resilience, cost reduction and process reliability.

Holistic development of high power laser sources and corresponding applications

2006 ◽  
Author(s):  
Reinhart Poprawe ◽  
Peter Loosen ◽  
Hans-Dieter Hoffmann ◽  
Dirk Petring ◽  
Konrad Wissenbach
Keyword(s):  
High Power ◽  
High Power Laser ◽  
Power Laser ◽  
Holistic Development ◽  
Laser Sources

Development trends of new high-power laser sources (Invited Paper)

2005 ◽  
Author(s):  
Reinhart Poprawe ◽  
Peter Loosen ◽  
Hans-Dieter Hoffmann
Keyword(s):  
High Power ◽  
High Power Laser ◽  
Power Laser ◽  
Development Trends ◽  
Laser Sources

scholarly journals Blue high-power laser sources for processing solutions in e-mobility and beyond

Procedia CIRP ◽  
2020 ◽  
Vol 94 ◽  
pp. 592-595
Author(s):  
Simon W. Britten ◽  
Laurens Schmid ◽  
Thomas Molitor ◽  
Markus Rütering
Keyword(s):  
High Power ◽  
High Power Laser ◽  
Power Laser ◽  
Laser Sources

scholarly journals Advanced LIGO Laser Systems for O3 and Future Observation Runs

Galaxies ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 84
Author(s):  
Nina Bode ◽  
Joseph Briggs ◽  
Xu Chen ◽  
Maik Frede ◽  
Peter Fritschel ◽  
...  
Keyword(s):  
Gravitational Wave ◽  
High Power ◽  
Beam Quality ◽  
Laser System ◽  
Low Noise ◽  
High Power Laser ◽  
Power Laser ◽  
The Third ◽  
Laser Systems ◽  
Laser Sources

The advanced LIGO gravitational wave detectors need high power laser sources with excellent beam quality and low-noise behavior. We present a pre-stabilized laser system with 70 W of output power that was used in the third observing run of the advanced LIGO detectors. Furthermore, the prototype of a 140 W pre-stabilized laser system for future use in the LIGO observatories is described and characterized.

Potential high-power laser sources at 589-nm and 569-nm wavelengths for adaptive optics

2004 ◽  
Author(s):  
Animesh Jha ◽  
Shaoxiong Shen ◽  
Lihui Huang ◽  
Jean-Paul Pique
Keyword(s):  
Adaptive Optics ◽  
High Power ◽  
High Power Laser ◽  
Power Laser ◽  
Laser Sources
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