Determination of a dose-like curve for active colour centres produced in LiF single crystals by ultrashort high intensity laser pulses and a preliminary investigation of their spectral and spatial properties by confocal and atomic microscopies

Determination of a dose-like curve for active colour centres produced in LiF single crystals by ultrashort high intensity laser pulses and a preliminary investigation of their spectral and spatial properties by confocal and atomic microscopies

Author Courrol, L. C. Autor UNIFESP Google Scholar
Samad, R. E. Google Scholar
Martinez, O. E. Google Scholar
Gomes, L. Google Scholar
Ranieri, I. M. Google Scholar
Baldochi, S. L. Google Scholar
Freitas, A. Z. de Google Scholar
Vieira Junior, N. D. Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
IPEN CNEN SP
Univ Buenos Aires
Abstract In this paper, the spatial and spectral properties of colour centres produced in LiF single crystals by ultrashort high intensity laser pulses are reported. the emission spectra of the centres were measured conventionally and also by confocal microscopy. A large amount of F centres that gave rise to aggregates such as F(2), F(4), F(2)(+) and F(3)(+) could be identified, showing a microscopic homogeneous distribution. the coloured surfaces were also spatially characterized by atomic force microscopy, and the images show the presence of defects on the modified surface. the formation of micrometric and sub-micrometric structures was observed and related to filamentation processes.
Keywords colour centres
ultrafast phenomena
waveguides
LiF
Language English
Sponsor Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Grant number FAPESP: 00/15135-9
Date 2008-10-01
Published in Journal of Optics A-pure and Applied Optics. Bristol: Iop Publishing Ltd, v. 10, n. 10, 5 p., 2008.
ISSN 1464-4258 (Sherpa/Romeo, impact factor)
Publisher Iop Publishing Ltd
Extent 5
Origin http://dx.doi.org/10.1088/1464-4258/10/10/104023
Access rights Closed access
Type Article
Web of Science ID WOS:000259700100024
URI http://repositorio.unifesp.br/handle/11600/30955

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