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Activation Line 300: Great Atmosphere for Surfaces Laser-Induced Tempering: Targeted Heating of Surfaces and Coatings an Optimal Surface in a Matter of Milliseconds

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Activation Line 300: Great Atmosphere for Surfaces Laser-Induced Tempering: Targeted Heating of Surfaces and Coatings an Optimal Surface in a Matter of Milliseconds
Activation Line 300: Great Atmosphere for Surfaces Laser-Induced Tempering: Targeted Heating of Surfaces and Coatings an Optimal Surface in a Matter of Milliseconds
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Bookenburgweg 4-8
Dortmund, Germany

Press release date: March 25, 2014

Laser-induced tempering: Targeted heating of surfaces and coatings

An optimal surface in a matter of milliseconds

Today, lasers are considered extremely versatile systems – systems believed to be capable of virtually anything by those outside the field. But now, at Dortmund-based LIMO, there is suddenly talk of using a laser source for surface heating which will surely astound even seasoned photonics experts. It involves a special application of the Activation Line 300, the most powerful L³ LIMO Line Laser source.

"Imagine that a surface with a functional layer only a few micrometers thin is to be heated to over 1000°C," says Dipl.-Ing. Dirk Hauschild, Director of Thin-Film Activation at LIMO Lissotschenko Mikrooptik GmbH in Dortmund. "And think about doing this with a substrate that is already destroyed at 500°C." But it doesn't stop there: The layers that are to be optimized are often composed of small particles or molecules which lose their desired properties and structural size just a few seconds after the processing temperature has been reached.

Here, there is a demand for fast and targeted heating and cooling. This challenge can be met with the use of an in-line high-temperature process that provides targeted surface heating in a matter of milliseconds. The Activation Line 300 was specifically designed to fill this need. With its high electro-optic energy efficiency of over 40%, the most powerful L³ LIMO Line Laser (a CW output of over 13kW with a homogeneous line focus 300 mm long) heats even the thinnest functional layers (thicknesses of over 0.1 µm to more than 100 µm) with an intensity of 40kW/cm² in a few milliseconds – delivering outstanding precision and consistency (beam quality M² < 3 in the processing direction) in the process. Because of the low thermal capacity, the layers also cool down again very quickly. "The laser energy thus serves to functionalize the layer and, as a result, add to its value," says Dirk Hauschild. "Thanks to the targeted irradiation using the laser line profile, the user can uniformly temper large surface areas. The Activation Line 300 thus enables customized annealing, crystallization and sintering processes with fully closed surfaces."

"Precision tempering of coatings on glass, metal, ceramics, films and even on paper is also possible," notes Hauschild. "For the production process, the user can also utilize extremely small energy and process windows that would otherwise not be feasible with the use of conventional technologies. I invite you to do the following: Come visit us in Dortmund and process your innovative materials and coating samples together with our team in our Applications Center to obtain the optimal design and customization of your Activation Line laser source."  

You can also learn more about precision tempering and LIMO at the Photonics Moscow trade fair in Russia (25 - 27 March 2014, hall 7.2 / booth C51) and at the International Laser Technology Congress AKL in Aachen, Germany (7 - 9 May 2014).

Additional product information:  
Dipl.-Ing. Dirk Hauschild   
Director of Thin-Film Activation  
Phone: +49 - 231- 22 24 1 – 120   
Fax: +49 - 231- 22 24 1 – 140

Press and media contact:
Katrin Theiler
Deputy Head of PR & Marketing
Phone: +49 - 231- 22 24 1 – 270
Fax: +49 - 231- 22 24 1 – 140

LIMO | Bookenburgweg 4-8 | 44319 Dortmund, Germany

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