- Titel
- UV Direct Laser Interference Patterning of Diffraction Gratings in Poly-Hydroxyethyl-Methacrylate Ophthalmic Polymers
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:bsz:14-qucosa2-1011905
- Quellenangabe
- Journal of Laser Micro Nanoengineering
Erscheinungsjahr: 2020
Jahrgang: 15
Heft: 3
Seiten: 186-190
E-ISSN: 1880-0688 - Erstveröffentlichung
- 2020
- Abstract (EN)
- Laser-induced refractive index modification by using micro-structuration of diffractive optical devices in ophthalmic polymers is of great interest in the fields of Optics and Ophthalmology. In this work, poly-hydroxyethyl-methacrylate, PHEMA, polymers used as soft contact lenses were struc-tured with linear periodic patterns by means of Direct Laser Interference Patterning, DLIP. Periodic modulation on the surface of the polymer material was attained under two-beam interference with a Q-switched laser source with emission at 266 nm and 10 ns pulse duration. Features of the laser pro-cessed areas were studied as a function of both the laser fluence and the interference period. Topog-raphy of structured areas was investigated using optical confocal microscopy. Compositional andstructural modifications of the processed material were studied by means of micro-Raman spectros-copy, and scanning electron microscopy, SEM, confirming that at low laser fluences structured mate-rial remained unaltered. Finally, both diffractive properties and refractive index modification wereassessed through diffractive techniques under illumination of a continuous-wave 632.8 nm He-Nelaser resulting in values ranging 7.8×10-2 and 5.6×10-2.
- Andere Ausgabe
- Link zum Artikel, der zuerst in der Zeitschrift „Journal of Laser Micro/Nanoengineering” bei der Japan Laser Processing Society erschienen ist.
DOI: 10.2961/JLMN.2020.03.2005 - Freie Schlagwörter (EN)
- direct laser interference patterning, laser materials processing, surface structuring, polymers, diffraction gratings
- Klassifikation (DDC)
- 530
- Verlag
- Japan Laser Processing Society, Osaka
- Förder- / Projektangaben
- European Commission (EC)
H2020 | MSCA-IF-EF-ST
Direct Laser Interference Patterning of Ophthalmic Polymers
(LasInPOP)
ID: 795630 - European Commission (EC)
H2020 | MSCA-ITN-ETN
european esrs network on short pulsed laser micro/nanostructuring of surfaces
(LASER4FUN)
ID: 675063 - Version / Begutachtungsstatus
- publizierte Version / Verlagsversion
- URN Qucosa
- urn:nbn:de:bsz:14-qucosa2-1011905
- Veröffentlichungsdatum Qucosa
- 19.12.2025
- Dokumenttyp
- Artikel
- Sprache des Dokumentes
- Englisch
- Lizenz / Rechtehinweis
