Laser Induced Periodic Surface Crystalline Patterns on SrO-0.5Li2O-4.5B2O3 and BaO-0.5Na2O-4.5B2O3 Glasses and Optical Second Harmonic Generation

Autor:	Vaish, Rahul, Rodriguez, Vincent, Maglione, Mario, Etourneau, J., Varma, K. B. R.
Rok vydání:	2010
Předmět:	Condensed Matter - Materials Science
Druh dokumentu:	Working Paper
Popis:	Transparent SrO-0.5Li2O-4.5B2O3 (SLBO) and BaO-0.5Na2O-4.5B2O3 (BNBO) glasses were fabricated via the conventional melt-quenching technique. The amorphous and glassy characteristics of the as-quenched samples were respectively confirmed by X-ray powder diffraction (XRD) and Differential Thermal Analysis (DTA) studies. Optically clear SLBO and BNBO glass nano/microcrystal composites were obtained by heat-treating the as-quenched glasses slightly above their respective glass transition temperatures. These glass nano/microcrystal composites exhibited second harmonic signals in transmission mode when exposed to infrared laser beam at \lambda =1064 nm. Interestingly second-harmonic waves were found to undergo optical diffraction and was attributed to the presence of self-organized microcrystalline patterns associated with 0.5-2\mu m periodicities. Comment: 15 pages 8 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1007.1845 Zobrazit plný text záznamu View this record from Arxiv