Development of submicrometer periodic surface structures on polyethylene terephthalate

Maria Csete; Zsolt Bor

doi:10.1117/12.320990

19 August 1998 Development of submicrometer periodic surface structures on polyethylene terephthalate

Maria Csete, Zsolt Bor

Proceedings Volume 3573, OPTIKA '98: 5th Congress on Modern Optics; (1998) https://doi.org/10.1117/12.320990
Event: OPTIKA '98: Fifth Congress on Modern Optics, 1998, Budapest, Hungary

Abstract

Submicrometer Laser Induced Periodic Surface Structures (LIPSS) were generated on polyethylene-terephthalate (PET) using polarized beam of an ArF excimer laser, having a fluence of 4 mJ/cm². Atomic Force Microscope and a home made repositionable sample holder was used to follow the morphological changes on the same part of the surface shot by shot. The main phases of the structure formation process were described: light scattering on the granulates which exist also on the original PET surface; appearance of additional granules and formation of elliptical modulation around the granules; transformation into ripple-shape modulation. The dependence of the LIPSS period on the wavelength and on the angle of incidence was determined. The LIPSS generating feedback mechanism was described as the interference between the incoming and surface-scattered waves in the light modified region. It was shown that the LIPSS is a self-organized grating.

Citation Download Citation

Maria Csete and Zsolt Bor "Development of submicrometer periodic surface structures on polyethylene terephthalate", Proc. SPIE 3573, OPTIKA '98: 5th Congress on Modern Optics, (19 August 1998); https://doi.org/10.1117/12.320990

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