Sub-picosecond ultraviolet laser filamentation-induced bulk modifications in fused silica

Papazoglou, DG; Zergioti, I; Tzortzakis, S; Sgouros, G; Maravelias, G; Christopoulos, S; Fotakis, C

dc.contributor.author	Papazoglou, DG	en
dc.contributor.author	Zergioti, I	en
dc.contributor.author	Tzortzakis, S	en
dc.contributor.author	Sgouros, G	en
dc.contributor.author	Maravelias, G	en
dc.contributor.author	Christopoulos, S	en
dc.contributor.author	Fotakis, C	en
dc.date.accessioned	2014-03-01T01:23:09Z
dc.date.available	2014-03-01T01:23:09Z
dc.date.issued	2005	en
dc.identifier.issn	0947-8396	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16835
dc.subject	Fused Silica	en
dc.subject	Integrated Optics	en
dc.subject	Refractive Index	en
dc.subject	Structural Change	en
dc.subject	Three Dimensional	en
dc.subject	Ultraviolet	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.classification	Physics, Applied	en
dc.subject.other	Birefringence	en
dc.subject.other	Cracks	en
dc.subject.other	Laser pulses	en
dc.subject.other	Light absorption	en
dc.subject.other	Photons	en
dc.subject.other	Plasmas	en
dc.subject.other	Refractive index	en
dc.subject.other	Transparency	en
dc.subject.other	Ultraviolet devices	en
dc.subject.other	Waveguides	en
dc.subject.other	Micro-channels	en
dc.subject.other	Multi-photon absorption	en
dc.subject.other	Photonic structure	en
dc.subject.other	Ultraviolet lasers	en
dc.subject.other	Fused silica	en
dc.title	Sub-picosecond ultraviolet laser filamentation-induced bulk modifications in fused silica	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/s00339-005-3271-8	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s00339-005-3271-8	en
heal.language	English	en
heal.publicationDate	2005	en
heal.abstract	We present experiments with sub-picosecond ultraviolet laser pulses (248 nm, 450 fs) tightly focused in the bulk of fused-silica samples. The high laser intensities attained generate plasma through multi-photon absorption and electron avalanche processes in the bulk of the material. Depending on the initial experimental conditions three distinct types of structural changes in the material are observed, from small changes of the refractive index to birefringence, and even cracks and voids. We also observe the creation of micro-channels, up to 115 μm in length, inside the material due to self-guiding and filamentation of the laser pulses in the transparent material. The selective change of the refractive index is a promising method for the fabrication of photonic structures such as waveguides and three-dimensional integrated optical devices. © Springer-Verlag 2005.	en
heal.publisher	SPRINGER	en
heal.journalName	Applied Physics A: Materials Science and Processing	en
dc.identifier.doi	10.1007/s00339-005-3271-8	en
dc.identifier.isi	ISI:000229239800002	en
dc.identifier.volume	81	en
dc.identifier.issue	2	en
dc.identifier.spage	241	en
dc.identifier.epage	244	en