Femtosecond laser-induced oriented precipitation of Ba2TiGe2O8 crystals in glass.
Ba(2)TiGe(2)O(8) crystals were selectively precipitated on femtosecond laser irradiated BaO-TiO(2)-GeO(2) glass surface. Furthermore, the crystal could grow from the surface of glass to the interior towards the laser movement direction when the laser focus was continuously moved. The laser-induced crystal was confirmed to be Ba(2)TiGe(2)O(8) phase by x-ray diffraction analysis and micro-Raman spectra. We also observed blue light due to double-frequency conversion of the 800nm incident laser in the crystallized regions. We propose the observed phenomena resulted from the femtosecond laser-assisted orientation of precipitation of crystal.
Dai
Ye
Y
Department of Physics, Shanghai University, Shanghai 200444, China.
Ma
Hongliang
H
Lu
Bo
B
Yu
Bingkun
B
Zhu
Bin
B
Qiu
Jianrong
J
D016880:Anisotropy; D003460:Crystallization / Q000379:methods*; D005590:Fractional Precipitation; D005898:Glass / Q000737:chemistry* / Q000528:radiation effects*; D007834:Lasers; D008027:Light; D008422:Materials Testing; D008968:Molecular Conformation