Laser micro-machining and applications of glasses in optoelectronics

For glass machining and laser-induced crystallization, neodymium:yttrium aluminum garnet(Nd:YAG) laser was used. In glass machining process, laser drilled hole can be created by laser ablation with transparent wavelength of 1064nm. To create laser-induced silver metallic particles as seeds for nucleation in photosensitive glass containing Ag+ and Ce3+ ions, the pulse width and frequency of the used laser were 8 ns and 10 Hz, respectively. Heat treatment was conducted at 570degreesC for I h, following laser irradiation, to produce crystalline growth, after which a LiAlSi3O8 crystal phase appeared in the laser-irradiated Li2O-Al2O3-SiO2 glass. For the present study, we compared the effect of laser-induced crystallization on glass crystallization with that of spontaneous crystallization by heat treatment.