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High precision automated tab assembly with micro optics for optimized high-power diode laser collimation

: Forrer, M.; Strub, H.; Honig, T.; Koller, N.; Kunz, A.; Moser, H.; Brecher, C.; Hoeren, M.; Zontar, D.


Glebov, A.L. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Components and Packaging for Laser Systems VI : 3-5 February 2020, San Francisco, California
Bellingham, WA: SPIE, 2020 (Proceedings of SPIE 11261)
ISBN: 978-1-5106-3285-1
ISBN: 978-1-5106-3286-8
Paper 112610B, 8 pp.
Conference "Components and Packaging for Laser Systems" <6, 2020, San Francisco/Calif.>
Conference Paper
Fraunhofer IPT ()

The industrial assembly processes for fast axis collimation (FAC) lenses with high power laser diodes are continuously being improved and automated. The system requirements allow for various solutions for the attachment process of the micro-optic component, the standard being active assembly relative to the light emitting laser-diode facet with joining by a UV-curable glue at attachment positions outside of the laser beam-path. To facilitate higher degrees of freedom and to optimize the results in the joining process with tighter tolerances in some critical functions, the FAC mounted on tab is one of the possible solutions and a viable process option. We report the results of high accuracy preassembly of FAC on tab with respect to the specific requirement of a target assembly back focal length within tight tolerance values.