Product category:
Laser and high energy beam metalworking - machining or forming
News Release from: Jenoptik | Subject: Solid state lasers - brittle materials working
Edited by the Manufacturingtalk Editorial
Team on 15 June 2007
Lasers work and split brittle materials
Among various solid state laser developments to be shown at LASER 2007 is a thermal laser beam separation process to split brittle materials such as glass, ceramics and semiconductors.
Jenoptik will show a laser source for the flat panel industry, new femto second lasers for tissue-protecting medical technology applications as well as the clean and fast separation of brittle materials such as glass or ceramics at LASER 2007 The exhibition will be held in Munich (Muenchen), Germany, from June 18
This article was originally published on Manufacturingtalk on 18 Nov 2005 at 8.00am (UK)
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In 2006 the Jenoptik technology group generated around 40% of its total sales in the Laser and Optics division and has concentrated its laser business on new technologies, for example, in the area of solid-state lasers.
The Group's laser activities are primarily based in Jena and Goettingen, Germany, the systems are marketed worldwide.
Jenoptik is one of the leading providers in the areas of high performance diode lasers and thin-disk laser technology.
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At the laser trade fair it will be presenting not only new laser systems but also technologically sophisticated accessories such as optics, lenses and special modules.
* Solid-state thin-disk laser for the flat panel industry - the JenLas ASAMA disk laser was specially developed for the annealing of thin films (LCD and OLED flat panels) and the activation of dopings (high performance transistors, semiconductor industry) in semiconductor films.
Its beam properties provide for an unsurpassed, homogeneous level of surface scanning and, with a repetition rate of 50kHz, ensure a high level of efficiency and throughput in the industrial manufacturing process.
The crystallization of thin silicon films is extremely important for the manufacture of thin film transistors on LCD (liquid crystal display) and OLED (organic light emitting diode) flat panels.
It provides for increased excitation of the electrons in the crystallized silicon films and extremely smooth films - both prerequisites for the next generation of panels in particular for mobile electronics such as mobile phones or laptops, etc.
* Femto second lasers for medical technology and micro materials process - the Laser JenLas D2 fs is a new development.
Ultra-short pulses of laser light have since proven beneficial for a whole range of applications.
High energy femto second pulses are particularly appropriate for those areas where there is a need for high processing quality whilst simultaneously ensuring minimal thermal damage to the surrounding material, such as for example when cutting flaps in the horny layer for refractive correction (LASIK).
Jenoptik has developed the new femto second laser based on its thin-disk laser technology.
This laser is intended to open up new innovative areas of application for use both in the medical area as well as for micro materials processing.
* Laser process for the separation of brittle materials - in laser materials processing Jenoptik has progressed the so-called thermal laser beam separation process with its JENOPTIK-VOTANTM G laser system up to the 'mass-production ready' stage.
Brittle materials such as glass, ceramics and semiconductors are heated via a laser beam and then quickly cooled.
The powerful stresses that occur in the material as a result create a defined crack along the laser beam's direction of movement.
In comparison with conventional, abrasive laser technologies such as the perforation with pulsed laser beam, the impressive features of the new process are the micro-crack free edges it produces and the fact that it simultaneously prevents contamination caused previously by the melting.
It is a contactless process and because of the special active principle operates totally particle-free.
In addition, with the thermal separation the process speed is increased by up to 300%.
In Munich, Jenoptik will also be presenting new optics, lenses and modules such as scanning lenses for micro-materials processing, such as precision cutting, scribing and labeling of various materials or internal glass engraving.
There is a wide range of diffractive, refractive and hybrid micro-optics and elements both for micro-materials processing as well as ophthalmology and semiconductor lithography.
In the diode laser area Jenoptik has completed the conversion of products to its own high efficiency diode laser bars.
All passively cooled diode laser types now achieve a performance capability which was previously only possible with high performance diode lasers based on micro channel thermal reduction.
* About the Jenoptik Group - Jenoptik specializes in photonic and mechatronic technologies and in selected areas is a technology and market leader.
Jenoptik concentrates on its core expertise, the exploitation and utilization of light as an industrial tool, and is actively engaged in the four fields of expertise of lasers, optics, sensors and mechatronics.
In 2006 approximately 3,200 employees of the Jenoptik Group achieved sales of EUR 485 million and an operating result (EBIT) of approximately EUR 38 million.
The Jenoptik Group is one of the leading suppliers of laser systems specializing in particular in innovative solid-state lasers, such as high-power diode lasers and thin-disk lasers.
Thanks to their high efficiency and long service life, combined with excellent beam properties these are becoming increasingly widespread.
Systems, facilities as well as laser modules and components are being developed, manufactured in large quantities and distributed.
They are used in particular in the areas of medical technology and materials processing.
Jenoptik is one of the few companies that cover the complete process value-added chain in the area of solid state laser technology within the group - from the semiconductor material, the laser beam source and laser systems with optical modules through to sensors and automation technology for complete specialized systems, which use laser processes.
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