The Review of Laser Engineering
Online ISSN : 1349-6603
Print ISSN : 0387-0200
ISSN-L : 0387-0200
Thermo-optic Characteristics of Transparent Ceramic YAG in the Near Infrared Region
Keisuke UMETSU, Hiroaki FURUSE, Ryo YASUHARA, Hiroyasu SONE, Midori KAWAMURA, Keijiro HIRAGA
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Keywords: Laser material, Thermal effect, Optical property
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2017 Volume 45 Issue 4 Pages 231-

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Abstract
Abstract: The thermo-optic coefficient dn/dT at a wavelength of 1064 nm was measured in a transparent ceramic yttrium aluminum garnet (YAG) between room temperature and 430 K. The values of dn/dT at 300 K and 400 K were 7.43 × 10‒6 1/K and 10.0 × 10‒6 1/K, respectively. In addition, the dn/dT at 632.8 nm and thermal expansion coefficient were also measured at the same temperature range.
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© 2017 by The Laser Society of Japan
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