Abstract
Nd:MgO:LiNbO3 is a laser material. Planar optical waveguides in Nd:MgO:LiNbO3 were formed by He+ implantation to doses of 1.4 × 1016 and 1.5 × 1016 ions/cm2 at energies of 2.8 and 2.5 MeV, respectively, and dark modes were observed by the prism coupling method. The effect of MeV He ion implantation on the lattice order of the crystals in the guiding regions of the waveguides was analyzed by the Rutherford backscattering/channeling technique. The refractive index profiles are all calculated and fitted by using WKB method and PIPR method, respectively. The fluorescence spectrum of the sample has been measured.
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