Creation of tailored features by laser heating of Nd0.2La0.8BGeO5 glass

Abstract The creation of tailored micron-size structures by a simple method has been demonstrated in Nd 0.2 La 0.8 BGeO 5 glass. Polycrystalline lines and dots are produced in predetermined regions of the glass by selective heating with 800 nm radiation from a Ti-Sapphire laser. The X-ray diffraction and energy dispersive spectroscopy results indicate that Nd 3+ enters the crystal structure substitutionally. The glass crystallizes congruently with the crystalline spot diameter increasing ∝ time 1/3 , while the crystal structure remains same as of LaBGeO 5 .