Three-dimensional temperature distribution and modification mechanism in glass during ultrafast laser irradiation at high repetition rates.
Opt Express
; 20(2): 934-40, 2012 Jan 16.
Article
em En
| MEDLINE
| ID: mdl-22274440
ABSTRACT
We experimentally determined the three-dimensional temperature distribution and modification mechanism in a soda-lime-silicate glass under irradiation of ultrafast laser pulses at high repetition rates by analyzing the relationship between the morphology of the modification and ambient temperature. In contrast to previous studies, we consider the temperature dependence of thermophysical properties and the nonlinear effect on the absorbed energy distribution along the beam propagation axis in carrying out analyses. The optical absorptivity evaluated with the temperature distribution is approximately 80% and at most 3.5% smaller than that evaluated by the transmission loss measurement. The temperature distribution and the strain distribution indicate that visco-elastic deformation and material flow play important roles in the laser-induced modification inside a glass.
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01-internacional
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MEDLINE
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article