Micro-Raman and photoluminescence spectra of Sm3+-doped β-BaB2O4 crystal lines written by YAG laser irradiation in glass Original Research Article

Nonlinear optical β-BaB2O4 (β-BBO) crystal straight lines are written in 10Sm2O3·40BaO·50B2O3 glass by irradiation of a continuous wave Nd:YAG laser operating at 1064 nm. The linearly polarized micro-Raman scattering spectra for β-BBO crystal lines are consistent with those for commercially available y-cut β-BBO bulk single-crystals, supporting that β-BBO crystal straight lines with the c-axis orientation along the YAG laser scanning direction might be single-crystals. The photoluminescence spectra with large intensities and Stark splitting are observed for β-BBO crystal lines, and it is concluded that some amounts of Sm3+ ions in the glass are incorporated into β-BBO crystal lines. Two-dimensional β-BBO crystal curved lines with a bending angle of 30° are successfully written in 10Sm2O3·42BaO·48B2O3 glass.