期刊
APPLIED SURFACE SCIENCE
卷 239, 期 2, 页码 201-208出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2004.05.267
关键词
annealing; ZrO2 coatings; laser-induced damage threshold; XRD; weak absorption
ZrO2 coatings were deposited on different substrates of Yb:YAG and fused silica by electron beam evaporation. After annealed for 12 h at 673 and 1073 K, respectively, weak absorption of coatings was measured by surface thermal lensing (STL) technique, and then laser-induced damage threshold (LIDT) was determined also. The crystalline phase of ZrO2 coatings and the size of the crystal grain were investigated by X-ray diffraction. It was found that microstructure of ZrO2 coatings was dependent on both annealing temperature and substrate structure, and coatings containing monoclinic phases had higher damage threshold than others. Due to the strong absorption of Yb:YAG, damage threshold of coatings on Yb:YAG was much less than that on fused silica. (C) 2004 Elsevier B.V. All rights reserved.
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