Record number :
1382526
Title of article :
Surface modification and crystallization of the BaO–B2O3–SiO2 glassy system using CO2 laser irradiation
Author/Authors :
Avansi، نويسنده , , W. and Mastelaro، نويسنده , , V.R. and Andreeta، نويسنده , , M.R.B.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Pages :
5
From page :
279
To page :
283
Abstract :
The surface modification and crystallization process of BaO–B2O3–SiO2 glass compositions when exposed to CO2 laser irradiation was evaluated as a function of the laser power, irradiation time and surface condition. The glass surface was modified by the application of laser power exceeding 0.40 W and an irradiation time of more than 300 s. Micro-Raman and X-ray diffraction measurements revealed at high laser power the formation of β-BaB2O4 (β-BBO) crystalline phase. The crystallization of the irradiated region was enhanced when β-BBO micrometer sized particles were dispersed on the surface of the glass sample. The intensity of the second harmonic generation observed in the crystallized region was found to depend mainly on the condition of the glassy surface prior to glass irradiation.
Keywords :
crystallization , Glasses , Laser-matter interactions , Oxide glasses , non-linear optics
Journal title :
Journal of Non-Crystalline Solids
Link To Document :