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Proceedings Paper

Fiber-fed laser-heated process for printing transparent glass from single mode optical fiber
Author(s): John M. Hostetler; Jonathan T. Goldstein; Douglas Bristow; Robert Landers; Edward C. Kinzel
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Paper Abstract

This paper describes the additive manufacturing (AM) of glass using a fiber-fed laser-heated process. Stripped SMF-28 optical fiber with a diameter of 125 μm is fed into a laser generated melt pool. A CO2 laser beam is focused onto the intersection of the fiber and the work piece, which is positioned on a four-axis computer controlled stage. The laser energy at λ=10.6 μm is directly absorbed by the quartz fiber, locally heating the glass above its working point. Through the careful control of process parameters such as laser power, feed rate and scan speed, bubble free parts such as walls and lenses may be printed. These parts are assessed on the grounds of their transmissivity and refractive index homogeneity, and issues unique to the process such as the thermal breakdown of the glass and refractive index mismatch present in SMF-28 are discussed.

Paper Details

Date Published: 26 February 2018
PDF: 11 pages
Proc. SPIE 10523, Laser 3D Manufacturing V, 1052307 (26 February 2018); doi: 10.1117/12.2291443
Show Author Affiliations
John M. Hostetler, Missouri Univ. of Science and Technology (United States)
Jonathan T. Goldstein, Air Force Research Lab. (United States)
Douglas Bristow, Missouri Univ. of Science and Technology (United States)
Robert Landers, Missouri Univ. of Science and Technology (United States)
Edward C. Kinzel, Missouri Univ. of Science and Technology (United States)


Published in SPIE Proceedings Vol. 10523:
Laser 3D Manufacturing V
Henry Helvajian; Bo Gu; Alberto Piqué, Editor(s)

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