Picosecond and subpicosecond visible laser ablation of optically transparent polymers

Serafetinides, AA; Skordoulis, CD; Makropoulou, MI; Kar, AK

dc.contributor.author	Serafetinides, AA	en
dc.contributor.author	Skordoulis, CD	en
dc.contributor.author	Makropoulou, MI	en
dc.contributor.author	Kar, AK	en
dc.date.accessioned	2014-03-01T01:14:03Z
dc.date.available	2014-03-01T01:14:03Z
dc.date.issued	1998	en
dc.identifier.issn	0169-4332	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12837
dc.subject	Ablation rates	en
dc.subject	Atomic force microscopy	en
dc.subject	Optically transparent polymers	en
dc.subject.classification	Chemistry, Physical	en
dc.subject.classification	Materials Science, Coatings & Films	en
dc.subject.classification	Physics, Applied	en
dc.subject.classification	Physics, Condensed Matter	en
dc.subject.other	Chemical bonds	en
dc.subject.other	Dissociation	en
dc.subject.other	Ground state	en
dc.subject.other	Laser ablation	en
dc.subject.other	Molecular vibrations	en
dc.subject.other	Neodymium lasers	en
dc.subject.other	Nylon polymers	en
dc.subject.other	Photochemical reactions	en
dc.subject.other	Polymethyl methacrylates	en
dc.subject.other	Relaxation processes	en
dc.subject.other	Surface structure	en
dc.subject.other	Transparency	en
dc.subject.other	Surface topology	en
dc.subject.other	Optical materials	en
dc.title	Picosecond and subpicosecond visible laser ablation of optically transparent polymers	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0169-4332(98)00276-1	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0169-4332(98)00276-1	en
heal.language	English	en
heal.publicationDate	1998	en
heal.abstract	The ablation rates, as a function of the laser fluence, of the optically transparent polymers, Nylon-6,6 and PMMA, are reported using picosecond and subpicosecond laser pulses, obtained from a Regenerative Amplified Nd:YAG laser system. The laser pulses had a duration of 100 ps at 1064 and 532 nm wavelengths and 0.8 ps at 595 nm. The ablation rate results indicate a strong saturation behaviour for both polymers in the investigated irradiation conditions. The material removal is 2-3 times higher in the case of the visible (532 nm) picosecond laser ablation experiments. The surface topology of the polymers was also studied. The obtained Atomic Force Microscopy images reveal no mechanical damage in the inner ablation crater wall. The qualitative analysis of the ablation mechanism for ultrashort pulse laser irradiation reveals a combination of photochemically induced direct bond dissociation and a photothermal process due to the relaxation of the excited polymers within the vibrational levels of the ground state. (C) 1998 Elsevier Science B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Applied Surface Science	en
dc.identifier.doi	10.1016/S0169-4332(98)00276-1	en
dc.identifier.isi	ISI:000076267100039	en
dc.identifier.volume	135	en
dc.identifier.issue	1-4	en
dc.identifier.spage	276	en
dc.identifier.epage	284	en