Microelectronics Packaging -- AS FEATURES GET SMALLER, THE ROLE FOR LASERS GETS LARGER MEMS | ARTICLE DIRK MÜLLER, MICROELECTRONICS AND SOLAR MARKET SEGMENT MANAGER, RALPH DELMDAHL, PRODUCT MARKETING MANAGER, AND STEPHEN LEE MANAGER, ASIA APPLICATIONS > 40 | Commercial Micro Manufacturing…
November 2015 · The PCB Magazine 77
Dirk Müller, Ph.D. is director
of marketing at Coherent Inc.
To reach the author, click here.
As Vias Shrink, Opportunities for Laser Drilling Expand
response to this need, laser manufacturers have
already developed a…
Laser marking meets diverse
challenges in fab and packaging
DIETRICH TÖNNIES, Ph.D. and DIRK MÜLLER, Ph.D., Coherent Inc., Santa Clara, CA
The basics of laser marking are reviewed, as well as current and emerging laser technologies.
material, and often at high throughput. Plus, laser processing is "green" in that it frequently
eliminates the need to use chemicals that are hazardous to use or difficult to dispose.
By Dirk Müller, Rainer Pätzel, George Oulundsen, Hatim Haloui and Ed Rea, Coherent Inc.
…long it takes heat to move from one point in a substance to another. "For most materials, it will be slower than 10 or 20 picoseconds," said Dirk Müller, director of product development at laser maker Coherent of Santa Clara, Calif. Sending a pulse of a time width below that threshold into a…
Reprinted from High Value Laser Marking By Dirk Müller, Ph.D., Director of Product Line Management, and Oliver Haupt, Senior Product Manager at Coherent, Inc. Lasers are used to mark an extremely diverse range of products, such as food packages, semiconductor wafers, identification cards, electrical…
which quality is a primary concern.
Figure 3: Removal of a SiO2 thin film from silicon using a single ps pulse
Dr. Dirk Müller
Coherent (Deutschland) GmbH
64807 Dieburg, Germany
Tel. +49 6071 / 968 - 0
…together, rather than simply heating it, it is intrinsically not a hot process. Short-Pulse Lasers Enable Transparent Materials Processing BY DR. DIRK MÜLLER AND DR.-ING. OLIVER HAUPT COHERENT INC. Images courtesy of Coherent Inc. Recast Layer Surface Debris Ejected Molten Material Microcracks…
this technology to impact industries as
diverse as microelectronics fabrication,
medical device manufacturing and automotive production.
Meet the author
Dirk Müller, Ph.D., is the director of Strategic Marketing at Coherent, Inc.; email: Dirk.
…provide a sufficiently small HAZ. Picosecond lasers can provide far superior results that more than justify the higher cost of these lasers. Dirk Müller and Oliver Haupt Coherent Inc. E: Dirk.Mueller@Coherent.com, Oliver.Haupt@coherent.com W: www.coherent.com MATERIALS PROCESSING Coherent Rapid…
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