LASYS 13.30-14.00
High energy picosecond laser material processing
Tim Gerke, Fianium
Besides the integration of energy efficient laser sources, some functions are now included in the laser machines of the TruLaser Cell Series that optimally adapt the system to new applications, as well as improve efficiency, process reliability, modularity, usability and flexibility.
www.trumpf-laser.com/en/products/ laser-systems/3d-laser-processing- systems/
trulaser-cell-series-7000.html
13.00-13.30
Effect of internally focused laser processing of sapphire substrate on bowing
Hitoshi Hoshino, Disco Hi-Tec Europe
Tis presentation will review a new approach to the bowing management of sapphire substrates for III-nitride epitaxy based on the internally-focused laser processing. Te laser process modifies the phase of the sapphire, inducing a volume expansion effect that enables the bow to be managed. Bowing control is required in two main areas: 1) control of the initial bow of the sapphire substrate, and 2) reduction in the bow aſter the epitaxy. Tis new approach provides wide flexibility in the design engineering of epitaxial and device fabrication processes. Tus, it accelerates the realisation of larger diameter device processes with III-nitride/ sapphire.
www.disco.co.jp/eg/
www.lasersystemseurope.com | @lasersystemsmag
Ultrafast lasers have been demonstrated in recent years to be an enabling technology in the space of laser materials processing and micromachining. Tey have been touted for their capability of heat-free processing of thermally sensitive materials and applications. In addition to this key feature they also deliver an incredible peak power that enables nonlinear optical effects. Tese effects, such as nonlinear absorption, allow for processing of otherwise transparent materials without the need for UV conversion, and internal bulk material modification and processing. Tis presentation will discuss the key features and capabilities of ultrafast lasers in addition to key markets of interest.
www.fianium.com/app.htm
14.00-14.30
3D surface texturing and micromachining using ultrashort pulse lasers
Max Groenendijk, Lightmotif
Ultrashort pulse laser ablation is a highly accurate micromachining method and is capable of machining any material with minimal damage, enabling for example drilling, milling, and texturing applications. Tis presentation will show Lightmotif ’s 3D technology, which can be used, for example, for texturing of freeform curved surfaces to obtain functional properties. Te step-and- scan machining concept uses a highly accurate five-axis manipulator integrated with a picosecond pulsed laser and a galvo-scanner. Specifically designed soſtware allows for high-level programming of complex and large jobs. Tis powerful combination will be
demonstrated by the example of functional surface texturing of an injection mould.
www.lightmotif.nl
14.30-15.00
Femtosecond laser processing of metal and plastic materials for the medical device industry
Geoff Shannon, Miyachi America; Stephen Hypsh, Jenoptik Laser Technologies
Miyachi will give an overview pertaining to manufacturing medical devices. In detail, a new machine for precision tube cutting for medical implants like stents as presented. Together with a femtosecond laser JenLas femto 10 from Jenoptik, this new machine will open up a new generation of stents in terms of quality and precision. As an advantage of the short pulse duration, shorter than 400fs, the customer has the possibility to process stents based on bioabsorbable polymers besides stainless steel and NiTi-stents. Te machine and the laser are a perfect combination of precision and quality, positioning in µm-scale and cutting without having any heat-affected zone (HAZ) or burr.
www.jenoptik.com/lasers-material- processing
15.00-15.30
Introduction to fume extraction for laser processing applications
Tony Lockwood, BOFA International
BOFA International is a leader in fume extraction and filtration. Lasers are now an essential tool in industry for cutting, marking, engraving and welding a vast range of materials. Metals are the most commonly worked substrate, but organic materials are catching up fast. In virtually all the above operations some form of fume is given off as the laser thermally decomposes the substrate to a greater or lesser degree. Some of the particulate matter within the fumes fall within the respirable range and a considerable number of the gasses generated have occupational exposure limits set for them. Te presentation will discuss how these harmful fumes are removed from the working environment, together with enhanced production and reduced downtime using BOFA fume extraction technology.
www.bofa.co.uk
ISSUE 23 • SUMMER 2014 LASER SYSTEMS EUROPE 25
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