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Formation of Elemental Distribution in Glass Using Thermal Accumulation with Femtosecond Laser Irradiation

Published online by Cambridge University Press:  31 January 2011

Masahiro Shimizu ,
Kiyotaka Miura ,
Naomi Yasuda ,
Masaaki Sakakura ,
Shingo Kanehira ,
Masayuki Nishi ,
Yasuhiko Shimotsuma  and
Kazuyuki Hirao
Masahiro Shimizu
Affiliation:
m-shimizu@curl1.kuic.kyoto-u.ac.jp
Kiyotaka Miura
Affiliation:
kmiura@collon1.kuic.kyoto-u.ac.jp, Kyoto University, Department of Material Chemistry, Kyoto, Japan
Naomi Yasuda
Affiliation:
yasuda@curl1.kuic.kyoto-u.ac.jp, Kyoto University, Department of Material Chemistry, Kyoto, Japan
Masaaki Sakakura
Affiliation:
masa@collon1.kuic.kyoto-u.ac.jp, Kyoto University, Innovative Collaboration Center, Kyoto, Japan
Shingo Kanehira
Affiliation:
kane@collon1.kuic.kyoto-u.ac.jp, United States
Masayuki Nishi
Affiliation:
west@collon1.kuic.kyoto-u.ac.jp, Kyoto University, Department of Material Chemistry, Kyoto, Japan
Yasuhiko Shimotsuma
Affiliation:
yshimotsu@yahoo.co.jpyshimo@collon1.kuic.kyoto-u.ac.jp, Kyoto University, Innovative Collaboration Center, Kyotodaigaku-Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan, +81-75-393-3851, +81-75-393-3861
Kazuyuki Hirao
Affiliation:
hirao@bisco1.kuic.kyoto-u.ac.jp, Japan
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Abstract

Elemental migration inside a glass was induced space-selectively and microscopically by high-repetition femtosecond(fs) laser irradiation. The tendency of the elemental migration depended on the strength of the bond between cations and oxygen ions:strongly bonded ions like Si or Al migrated to the center of the irradiated spot, whereas weekly bonded ions such as Ca migrated to the outside. Judged from analyzed temperature distribution, this phenomenon may be due to the thermomigration(Soret effect). The refractive index distribution was modified locally by controlling elemental distribution and optical waveguide was formed in phosphate and borate glasses.

Keywords

laser-induced reactionoptical propertiesdiffusion
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1230: Symposium MM – Ultrafast Processes in Materials Science , 2009 , 1230-MM07-04
Copyright
Copyright © Materials Research Society 2010

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