Cover Picture: Laser Technik Journal 1/2012

The engine of growth for the entire industry

• Andreas Tünnermann

Content: Laser Technik Journal 1/2012

• Seite 2-3

News & Infos: Laser Technik Journal 1/2012

• Seite 4-9

“USP lasers provide us with something absolutely new”

• Carmen Teutsch, Oliver Dreissigacker
• Seite 10-13

Products: Laser Technik Journal 1/2012

• Seite 14-18

Faster and reliable joining of solar cells

Interconnection of crystalline solar cells to modules is a critical step in photovoltaic module production. The typical tabbing and stringing process requires complex handling of delicate solar cells as well as a reliable but gentle joining process. Things become even more complicated as there is a trend to cell thicknesses way below 200 μm together with steadily rising production rates.

• Richard Hendel, Benjamin Lehner, Christoph Rüttimann
• Seite 20-23

Novel concept for laser patterning of thin film solar cells

Lasers are increasingly being used as an efficient and reliable tool in the production of solar cells and solar modules. Particular interest exists in thin‐film photovoltaics, where laser structuring is aimed to realize appropriate monolithic serial interconnection. A novel concept successfully demonstrated complete laser structuring by application of short nanosecond laser pulses with a single, visible wavelength. These...

• Bert Stegemann, Frank Fink, Heinrich Endert, Manuel Schüle, Christof Schultz, Volker Quaschning, Jürgen Niederhofer, Hans‐Ulrich Pahl
• Seite 25-29

Components and tools for polarization‐maintaining fiber optics

Fiber cables open up new vistas for the design of modular devices and compact setups for industrial and scientific applications. Special fibers, such as polarization‐maintaining singlemode fibers, are predestined for use in complex, self‐contained setups, increasing laser safety by reducing the laser safety classification. Most importantly, a sensitive and delicate measurement system can still enjoy the benefits of a laser...

• Anja Krischke, Ulrich Oechsner, Christian Knothe, André Lamott
• Seite 30-34

Predicting laser beam characteristics

The laser mode quality factor (M2) provides a highly useful means of predicting laser beam propagation and focusing characteristics for both laser manufacturers and systems integrators. The Coherent ModeMaster PC enables rapid, accurate measurement of M2 for a wide range of CW and quasi­CW lasers with output from the ultraviolet to near infrared spectral range.

• Chad Nelson, Jordan Crist
• Seite 36-39

Focusing and optical imaging in applied laser technologies

In the field of laser material processing the knowledge of the intensity distribution in the processed volume is of considerable importance. Both, manageable algorithms as well as some information about parameters that influence the beam profile, including limiting factors, are relevant for the practical application. This article compares the approach of focusing laser beams with the method using an imaging optical system....

• Volker Neumann
• Seite 41-44

Calendar 2012

• Seite 45-45

Meetings: Laser Technik Journal 1/2012

• Seite 46-49

Service: Laser Technik Journal 1/2012

• Seite 51-56