Rare earth doped B 2 O 3 -Al 2 O 3 -SiO 2 glass (RE x BAS, x=5, 10, 20; RE=La, Sm) were prepared by solid state reaction method. Optical transmission spectra of such glass were characterized by ultraviolet spectrometers, and 1064 nm laser induced damage performance was investigated through the method of "1-on-1". The results indicated that there was a strong absorptive peak near 1064 nm in Sm x BAS glass, the peak was enhanced with increasing x. While La x BAS glass was transparent to 1064 nm laser, at the same time, the results of laser induced damage showed that the anti-laser induced damage performance of such glass was strengthened with the addition of rare earth oxide. Furthermore, the laser induced damage threshold (LIDT) of Sm x BAS glass was significantly higher than that of La x BAS glass. Consequently, Sm 3+ doping was favor in the improvement of anti-laser induced damage performance for BAS glass. © 2008 The Chinese Society of Rare Earths.
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