METHOD FOR LOCALLY INCREASING THE REFRACTION INDICES OF AN ELECTRO-OPTICAL MATERIAL USED IN OPTICAL OPTICS AND MATERIAL OBTAINED THEREBY

摘要

METHOD FOR LOCALLY INCREASING THE REFRACTION INDICES OF AN ELECTRO-OPTICAL MATERIAL USED IN OPTICAL OPTICS AND MATERIAL OBTAINED THEREBY. THE METHOD ACCORDING TO THE INVENTION CONSISTS OF IMPLEMENTING IONS 6 SULFUR OR A METALLIC DOPANT LIKELY TO TAKE PLACE OF A CATION OF THE CRYSTALLINE NETWORK OF THE FERROELECTRIC MATERIAL 2 FOLLOWED BY AN ANNEAL BETWEEN 300 AND 600 C TO RE-ARRANGE THE CRYSTALLINE NETWORK PERTURBE DURING THE IMPLANTATION AND TO ACTIVATE THE IMPLANT IONS. THE IONIC IMPLANTATION IS CARRIED OUT IN RELATION TO THE NORMAL DIRECTION ON THE SURFACE OF THE MONOCRYSTALLINE MATERIAL 2. FOR A MONOCRYSTAL IN LINBO, IT IS USED AS A DOPANT. THIS METHOD ALLOWS THE PRODUCTION OF A GUIDING LAYER 4 HAVING ORDINARY AND EXTRAORDINARY REFRACTIVE INDICES HIGHER THAN THOSE OF PURE MONOCRYSTAL. / P