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Title: Three-dimensional temperature distribution and modification mechanism in glass during ultrafast laser irradiation at high repetition rates
Authors: Shimizu, Masahiro  kyouindb  KAKEN_id
Sakakura, Masaaki
Ohnishi, Masatoshi
Yamaji, Masahiro
Shimotsuma, Yasuhiko  kyouindb  KAKEN_id
Hirao, Kazuyuki  kyouindb  KAKEN_id
Miura, Kiyotaka  kyouindb  KAKEN_id
Issue Date: 16-Jan-2012
Publisher: Optical Society of America
Journal title: Optics Express
Volume: 20
Issue: 2
Start page: 934
End page: 940
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.
Rights: © 2012 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.
URI: http://hdl.handle.net/2433/194089
DOI(Published Version): 10.1364/OE.20.000934
Appears in Collections:Journal Articles

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