Abstract
Abstract Permanent optical waveguides were produced by proton implantation in lithium iodate crystals. After implantation the samples present a good optical quality. No annealing procedure is required. The index profiles have been measured by dark modes spectroscopy and the ordinary refractive index has been obtained with an inverse WKB method. Moreover, the optical barrier is relevant with a maximum index change of about 0.04. The effects of ion fluence and beam energy have been investigated on z-cut samples.
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