An extremely high efficiency of up to 65 percent at 200 Watt optical
output power– these are the outstanding features of Osram Opto
Semiconductors’ new laser bars. They can simplify the design of
laser systems and reduce their cost. Laserline, one of the leading
manufacturers of diode lasers for industrial material processing, now
also makes full use of these advantages.
Laser bars from Osram Opto Semiconductors are the core of the latest
and most powerful fiber-coupled diode laser series of Laserline. The
complete system is water-cooled and supplies between 2 and 15 kilowatt
(kW) power via a fiber with a core diameter of 1 to 2 mm. Its overall
efficiency reaches maximum levels of more than 40 percent, due to the
high efficiency of the used laser bars.
The laser bar series SPL BKxx- 40WFT produces infrared radiation in
various wavelengths, ranging from 915 to 1020 nanometers (nm). As a
result of their excellent efficiency values of up to 65 percent, the
bars achieve a long operating lifetime, thus meeting the requirements
for industrial laser systems.
Efficient total systemBesides the optical pumping of fiber lasers, direct material
processing, e.g. welding and cutting of metals in the automotive
industry, is one of the main applications of infrared lasers with more
than 1 kW power. Direct diode lasers are the most efficient laser light
sources for such fiber-coupled systems and thus are a suitable
alternative for the previously often used though less efficient carbon
dioxide lasers.
Michael Klein, Marketing Manager for laser bars with Osram Opto
Semiconductors, emphasizes: “Our developments in the field of
laser bars push the utilization of direct diode lasers into ever higher
power ranges, thus enabling our customers to open up new markets. The
end-users benefit from the improved technology, e.g. lower investment
cost because less laser bars are required to generate the needed power.
Furthermore, the cost for electricity and maintenance will also
decrease due to high efficiency and long operating lifetime.”
This cutting-edge laser has been developed on the basis of results,
which of Osram Opto Semiconductors generated in the project HEMILAS,
supported by the German Federal Ministry of Education and Research.
Main results are the efficiency-optimized structure of epitaxy layers
and improved mirror technologies with a high damage threshold.
More information at
www.osram-os.com/
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