Publication: High-repetition-rate femtosecond laser processing of acrylic intra-ocular lenses
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Date
2020-01-20
Authors
Sola, Daniel ; Cases, Rafael
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Publisher
MDPI AG
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DOI
https://doi.org/10.3390/polym12010242
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info:eu-repo/semantics/article
Description
© 2019 Elsevier B.V..
This document is the published version of a published work that appeared in final form in Polymers
This document is made available under the CC-BY 4.0 license http://creativecommons.org/licenses/by/4.0
To access the final edited and published work see:
https://doi.org/10.3390/polym12010242
Abstract
The study of laser processing of acrylic intra-ocular lenses (IOL) by using femtosecond laser pulses delivered at high-repetition rate is presented in this work. An ultra-compact air-cooled femtosecond diode laser (HighQ2-SHG, Spectra-Physics) delivering 250 fs laser pulses at the fixed wavelength of 520 nm with a repetition rate of 63 MHz was used to process the samples. Laser inscription of linear periodic patterns on the surface and inside the acrylic substrates was studied as a function of the processing parameters as well as the optical absorption characteristics of the sample. Scanning Electron Microscopy (SEM) Energy Dispersive X-ray Spectroscopy (EDX), and micro-Raman Spectroscopy were used to evaluate the compositional and microstructural changes induced by the laser radiation in the processed areas. Diractive characterization was used to assess 1st-order efficiency and the refractive index change.
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Citation
Polymers Volume 12, Issue 11 January 2020 Article number 242
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Este Ãtem está sujeto a una licencia Creative Commons. http://creativecommons.org/licenses/by/4.0/