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Brightness and average power as driver for advancements in diode lasers and their applications

 
: Hengesbach, S.; Poprawe, R.; Hoffmann, D.; Traub, M.; Schwarz, T.; Holly, C.; Eibl, F.; Weisheit, A.; Vogt, S.; Britten, S.; Ungers, M.; Thombansen, U.; Engelmann, C.; Mamuschkin, V.; Lott, P.

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Postprint urn:nbn:de:0011-n-3436057 (2.0 MByte PDF)
MD5 Fingerprint: 66faab585dd287017c443b586a21ed83
Copyright Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Erstellt am: 24.11.2015


Zediker, M.S. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
High-Power diode Laser Technology and Applications XIII : 8-10 February 2015, San Francisco, California
Bellingham, WA: SPIE, 2015 (Proceedings of SPIE 9348)
ISBN: 978-1-62841-438-7
Paper 93480B, 18 S.
Conference "High-Power Diode Laser Technology and Applications" <13, 2015, San Francisco/Calif.>
Englisch
Konferenzbeitrag, Elektronische Publikation
Fraunhofer ILT ()

Abstract
Spatial and spectral emission characteristics and efficiency of high-power diode laser (HPDL) based pump sources enable and define the performance of the fundamental solid state laser concepts like disk, fiber and slab lasers. HPDL are also established as a versatile tool for direct materials processing substituting other laser types like CO2 lasers and lamp pumped solid state lasers and are starting to substitute even some of the diode pumped solid state lasers. Both, pumping and direct applications will benefit from the further improvement of the brightness and control of the output spectrum of HPDL. While edge emitting diodes are already established, a new generation of vertical emitting diode lasers (VCSELs) made significant progress and provides easy scalable output power in the kW range. Beneficial properties are simplified beam shaping, flexible control of the temporal and spatial emission, compact design and low current operation. Other characteristics like efficiency and brightness of VCSELs are still lagging behind the edge emitter performance. Examples of direct applications like surface treatment, soldering, welding, additive manufacturing, cutting and their requirements on the HPDL performance are presented. Furthermore, an overview on process requirements and available as well as perspective performance of laser sources is derived.

: http://publica.fraunhofer.de/dokumente/N-343605.html