English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/57738
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Morphology of ablation craters generated by fs laser pulses in LiNbO3

AuthorsLamela, J. ; Lifante, G.; Han, T. P. J.; Jaque, F; García Navarro, A.; Olivares Pascual, José; Agulló-López, F.
Issue Date2009
PublisherElsevier
CitationApplied Surface Science 255: 3918- 3922 (2009)
AbstractThe surface morphology of the ablation craters generated in LiNbO3 by 130 fs laser pulses at 800 nm has been investigated by AFM/SNOM microscopy. The single pulse fluence corresponding to the ablation threshold has been estimated to be ≈1.8 J/cm2. A complex structure including random cone-shaped protrusions is observed inside the ablated crater. The scale of the protrusion spacing is in the submicron range and the heights are typically of a few tens of nanometers. At and outside the crater rim a novel quasi-periodic wave-like topography pattern is observed in both types of microscopy techniques. The average wavelength, that is slightly dependent on pulse fluence, is (500-800 nm) comparable to the light wavelength. This novel topography feature keeps a close similarity with a Fresnel diffraction pattern by an absorbing circular obstacle or impact wave pattern produced by a combination of heat and shock wave (resemble that of impact crater). It is proposed that the obstacle is associated to the strongly nonlinear multiphoton absorption at the peak of the pulse profile. The energy deposited by nonlinear absorption of such profile causes ablation of both the crater and the rippled structure. © 2008.
URIhttp://hdl.handle.net/10261/57738
DOI10.1016/j.apsusc.2008.08.111
Identifiersdoi: 10.1016/j.apsusc.2008.08.111
issn: 0169-4332
Appears in Collections:(CFMAC-IO) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.