Beam vignetting effect in micro-optic collimation and transmission for high power diode laser arrays

H. Forrer; H. Moser; M. Huber; D. Kura; M. Schmidlin; S. Mourad; M. Forrer

doi:10.1117/12.2077415

20 February 2015 Beam vignetting effect in micro-optic collimation and transmission for high power diode laser arrays

H. Forrer, H. Moser, M. Huber, D. Kura, M. Schmidlin, S. Mourad, M. Forrer

Proceedings Volume 9346, Components and Packaging for Laser Systems; 934602 (2015) https://doi.org/10.1117/12.2077415
Event: SPIE LASE, 2015, San Francisco, California, United States

Abstract

High power diode laser arrays need special micro-optic beamshaping to optimize for collimation and spot focusing. A known and established solution makes use of cylindrical micro- optics for fast axis collimation and subsequent individual twisting of each emitter beamlet by a micro-optic cylindrical telescope array in order to achieve a symmetric beam parameter product. A crucial factor for the overall performance is the achievable transmission to collimation and the fiber coupling efficiency. We present an optical analysis of vignetting effects on the transmission in the beam twisting setup and show an optimization which can be achieved by advanced micro-optic production technologies.

Citation Download Citation

H. Forrer, H. Moser, M. Huber, D. Kura, M. Schmidlin, S. Mourad, and M. Forrer "Beam vignetting effect in micro-optic collimation and transmission for high power diode laser arrays", Proc. SPIE 9346, Components and Packaging for Laser Systems, 934602 (20 February 2015); https://doi.org/10.1117/12.2077415

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