Selective laser melting of borosilicate glass using ultrashort laser pulses

Seyfarth B, Schade L, Ullsperger T, Matthaeus G, Tuennermann A, Nolte S (2018)

Publication Type: Conference contribution

Publication year: 2018

Journal

Proceedings of SPIE Society of Photo-optical Instrumentation Engineers (SPIE)

Publisher: SPIE

Book Volume: 10523

Conference Proceedings Title: Proceedings of SPIE - The International Society for Optical Engineering

Event location: San Francisco, CA, USA

ISBN: 9781510615311

DOI: 10.1117/12.2289614

Abstract

Within the field of laser assisted additive manufacturing, the application of ultrashort pulse lasers for selective laser melting came into focus recently. In contrast to conventional lasers, these systems provide extremely high peak power at ultrashort interaction times and offer both the opportunity of nonlinear absorption and the potential to control the thermal impact at the vicinity of the processed region by tailoring the pulse repetition rate. Consequently, transparent materials like borosilicate glass or opaque materials with extremely high melting points like copper, tungsten or even special composites like AlSi40 can be processed. In this publication, we present the selective laser melting of glass by using 500 fs laser pulses at MHz repetition rates emitted at a center wavelength of 515 nm. In order to identify an appropriate processing window, a detailed parameter study was performed. We demonstrate the fabrication of porous bulk glass parts as well as the realization of structures featuring thicknesses below 30 μm, which is below typical achieved structural sizes using pulsed or CO2 laser [1]. In contrast to alternative approaches [2], due to the nonlinear absorption and therefore complete melting of the material, there was no need for binding materials. This work demonstrates the potential for 3D printing of glass using the powder bed approach.

Involved external institutions

Friedrich-Schiller-Universität Jena DE Germany (DE)

How to cite

APA:

Seyfarth, B., Schade, L., Ullsperger, T., Matthaeus, G., Tuennermann, A., & Nolte, S. (2018). Selective laser melting of borosilicate glass using ultrashort laser pulses. In Henry Helvajian, Alberto Pique, Bo Gu (Eds.), Proceedings of SPIE - The International Society for Optical Engineering. San Francisco, CA, USA: SPIE.

MLA:

Seyfarth, B., et al. "Selective laser melting of borosilicate glass using ultrashort laser pulses." Proceedings of the 5th Meeting of Laser 3D Manufacturing, San Francisco, CA, USA Ed. Henry Helvajian, Alberto Pique, Bo Gu, SPIE, 2018.

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