Realization and infrared to green upconversion luminescence in Er3+:YAlO3 ion-implanted optical waveguides

The light ion implantation technique is applied to perform several planar and channel waveguides in 1 at.% Er3+doped YAlO3 single crystal. Waveguides of different dimensions are obtained using different doses and energies of H+ or He+. Under cw infrared sapphire–titanium laser excitation, the guided green upconverted luminescence of Er3+ is studied. It is the result of an excited state absorption mechanism and its intensity increases with the light ion dose used for the waveguide fabrication.