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Microchannels inside bulk PMMA generated by femtosecond laser using adaptive beam shaping

  • In this contribution, we report on the generation of internal microchannels with basically unlimited channel length inside of PMMA bulk material by femtosecond laser. A precisely controllable and stable circular channel cross section is obtained by using a spatial light modulator to compensate the writing depth depending spherical aberration. Furthermore, the generation of a rotatable elliptical input beam by adaptive optics ensures a fitting of the beam shaping to the writing direction. In this study, we report on both, the effect of the ellipticity of the input beam and the effect of a correction of the spherical aberration on the circularity of the resulting internal microchannels. Moreover, we demonstrate the application of this writing technique by creating microfluidic testing structures inside of a transparent standard polymer.

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Metadaten
Author:Gian-Luca Roth, Stefan RungORCiD, Cemal Esen, Ralf HellmannORCiD
Parent Title (English):Optics Express
Document Type:Article
Language:English
Year of Completion:2020
Release Date:2020/05/05
GND Keyword:Femtosekundenlaser; Polymethylmethacrylate
Volume:28
Issue:4
First Page:5801
Last Page:5811
Urheberrecht:1
Institutes:Fakultät Ingenieurwissenschaften / Labore / Angewandte Lasertechnik und Photonik (alp)
Einrichtungen / ZeWiS
Licence (German):Keine Lizenz - es gilt das deutsche Urheberrecht
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