Abstract
A GdxY1−xCa4O(BO3)3 (GdxY1−xCOB)crystal, which belongs to rare-earth calcium oxyborate family, is usedfor non-critical phase-matching of visible and ultraviolet (UV) light.We employ 2.8-MeV He+ ions to form optical waveguides in theGd0.275Y0.725COB crystal at room temperature. The doses arevaried from 1.5×1016 ions/cm2 to 5×1016 ions/cm2. A model 2010 prism coupler is used to measurethe modes in Gd0.275Y0.725COB waveguides formed by MeVHe+ ion implantation. The refractive index profile is fitted basedon the reflectivity calculation method. The shape of refractive indexprofile is compared with one of nuclear energy loss obtained by TRIM'98simulation.
Published Version
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