Optics for laser material processing

J. Fontaine

doi:10.1117/12.2308734

23 July 1993 Optics for laser material processing

J. Fontaine

Proceedings Volume 1983, 16th Congress of the International Commission for Optics: Optics as a Key to High Technology; 19838R (1993) https://doi.org/10.1117/12.2308734
Event: 16th Congress of the International Commission for Optics: Optics as a Key to High Technology, 1993, Budapest, Hungary

Abstract

The transmission properties (waist diameter dÃ¢â‚¬Å¾Ã¢â‚¬Å¾ divergence 19,Ã¢â‚¬Å¾ (full angle) and laser power P,) of Nd:YAG laser radiation (1 =1064 nm) for all-silica step index (core diameter d,: 400 ttm and 600 Am, numerical aperture NA: 0.22, acrylate or silicone buffer) and graded-index fibers (d 0,: 400 Ã‚Âµm and 600 Am, NA: 0.25, silicone buffer) are investigated using high-power cw Nd:YAG rod lasers with up to 2 kW output power and a maximum beam parameter product (daft) of 180 mm*mrad (98 % encircled power of the laser beam). Depending on the pumping power the reflections from the fiber surface back into the laser cavity affect the laser power and the beam parameters, which in turn influence the coupling conditions and the transmission properties of fibers.'

Citation Download Citation

J. Fontaine "Optics for laser material processing", Proc. SPIE 1983, 16th Congress of the International Commission for Optics: Optics as a Key to High Technology, 19838R (23 July 1993); https://doi.org/10.1117/12.2308734

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