
Proceedings Paper
Fiber coupling of high-power diode laser stack for direct polycarbonate processingFormat | Member Price | Non-Member Price |
---|---|---|
$17.00 | $21.00 |
Paper Abstract
We present a novel optical system for fiber coupling of a commercial high power diode laser stack and the application of
this laser system to transmission welding of engineering thermoplastics. The diode laser stack is made up of two 20% fill
factor bars, emitting at 808 nm and with a total maximum output power of 120W CW. The stack was collimated using
FSAC micro-optics lenses in the fast and slow axis, with a full angle divergence of <4mrad and <25mrad respectively.
The optical design and simulations were carried out using ZEMAX®. Based on the design we built an optical set up,
which is divided in two subsystems. The first one collimates the laser beam in order to achieve the best focus and couple
it into the 400μm core fiber with NA0.22 and 70% efficiency. The second subsystem is designed for beam conformation
after the fiber output, using collimation and beam shaping to have a Gaussian beam profile on the work piece. The laser
system was applied to study the welding of polycarbonate plastics, based on the effects of selected welding parameters
on the seam geometry and surface integrity. The quality of the spot welding has been analyzed obtaining welded seams
with a mean diameter about 500-600μm, preserving the good technological properties of the thermoplastic considered in
this work. The results show that we have successfully developed a novel laser system which is highly efficient for
thermoplastics processing.
Paper Details
Date Published: 17 February 2010
PDF: 12 pages
Proc. SPIE 7583, High-Power Diode Laser Technology and Applications VIII, 75830G (17 February 2010); doi: 10.1117/12.841603
Published in SPIE Proceedings Vol. 7583:
High-Power Diode Laser Technology and Applications VIII
Mark S. Zediker, Editor(s)
PDF: 12 pages
Proc. SPIE 7583, High-Power Diode Laser Technology and Applications VIII, 75830G (17 February 2010); doi: 10.1117/12.841603
Show Author Affiliations
E. Vidal, Fundacion Tekniker (Spain)
I. Quintana, Fundacion Tekniker (Spain)
U. Azkorbebeitia, Fundacion Tekniker (Spain)
E. Mendez, MONOCROM S.L. (Spain)
I. Quintana, Fundacion Tekniker (Spain)
U. Azkorbebeitia, Fundacion Tekniker (Spain)
E. Mendez, MONOCROM S.L. (Spain)
Published in SPIE Proceedings Vol. 7583:
High-Power Diode Laser Technology and Applications VIII
Mark S. Zediker, Editor(s)
© SPIE. Terms of Use
