Mechanical deformations in polymers by UV laser ablation

Laura Antonucci; Vivi Tornari; Antonia Bonarou; Savas K. Georgiou; Costas Fotakis; Lorenzo Scalise; Enrico Esposito

doi:10.1117/12.386768

22 May 2000 Mechanical deformations in polymers by UV laser ablation

Laura Antonucci, Vivi Tornari, Antonia Bonarou, Savas K. Georgiou, Costas Fotakis, Lorenzo Scalise, Enrico Esposito

Author Affiliations +

Proceedings Volume 4072, Fourth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications; (2000) https://doi.org/10.1117/12.386768
Event: 4th International Conference on Vibration Measurement by Laser Techniques, 2000, Ancona, Italy

Abstract

Sequential double exposure holographic interferometry is employed for examining the mechanical effects induced in the UV ablation of polymers. Deformations, evidenced by changes in the refractive index of the substrate, are observed to develop at unexpectedly long distances (approximately equals 2 - 5 cm) from the irradiation area. The morphology of the induced effects depends on the substrate properties, with the major types observed being tentatively ascribed to delaminations and local fractures. For accounting for the highly delocalized spatial spread of the effects, laser doppler vibrometry was used for monitoring the propagation of the stresses generated by the ablation process. The examination confirms the development of intense vibrations far from the ablation point. The present results suggest that in UV laser processing of molecular substrates, the photomechanical effects can be significant and special attention should be paid in their characterization and their minimization.

Citation Download Citation

Laura Antonucci, Vivi Tornari, Antonia Bonarou, Savas K. Georgiou, Costas Fotakis, Lorenzo Scalise, and Enrico Esposito "Mechanical deformations in polymers by UV laser ablation", Proc. SPIE 4072, Fourth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (22 May 2000); https://doi.org/10.1117/12.386768

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