Confocal and atomic force microscopies of color centers produced by ultrashort laser irradiation in LiF crystals

Confocal and atomic force microscopies of color centers produced by ultrashort laser irradiation in LiF crystals

Author Courrol, Lilia Coronato Autor UNIFESP Google Scholar
Martinez, Oscar Google Scholar
Samad, Ricardo Elgul Google Scholar
Gomes, Laercio Google Scholar
Ranieri, Izilda Marcia Google Scholar
Baldochi, Sonia Licia Google Scholar
Freitas, Anderson Zanardi de Google Scholar
Vieira Junior, Nilson Dias Google Scholar
Wetter, N. U. Google Scholar
Frejlich, J. Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Abstract We report properties of the spatial and spectral distribution of color centers produced in LiF single crystals by ultrashort high intensity laser pulses (60 fs, 10 GW) using confocal spectral microscopy and atomic force microscopy. We could identify a large amount of F centers that gave rise to aggregates such as F-2, F-4, F-2(+) and F-3(+) distributed in cracked shape brownish areas. We have taken a 3D image using confocal microscopy of the sample (luminescent image) and no difference is observed in the different planes. The atomic force microscopy image clearly shows the presence of defects on the modified surface. The formation of micrometer or sub-micrometer voids, filaments and void strings was observed and related to filamentation process.
Keywords color centers
ultrafast phenomena
waveguides
LiF
Language English
Date 2008-01-01
Published in Riao/optilas 2007. Melville: Amer Inst Physics, v. 992, p. 737-742, 2008.
ISSN 0094-243X (Sherpa/Romeo, impact factor)
Publisher Amer Inst Physics
Extent 737-742
Origin http://dx.doi.org/10.1063/1.2926962
Access rights Closed access
Type Conference paper
Web of Science ID WOS:000255857900130
URI http://repositorio.unifesp.br/11600/45528

Show full item record




File

File Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Search


Browse

Statistics

My Account