KTP planar optical waveguide was fabricated by combining He+ion implantation with Rb-K ion exchange in pure RbNO3. The refractive index profiles in the novel waveguide were reconstructed by analyzing dark mode spectra. The influence of irradiation damage on the Rb distribution was investigated by means of RBS technique.
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X. Ming, F. Lu, X. Wang, M. Chen, and X. Liu, "The Formation of Optical Waveguide in KTP Crystal by Combining Ion Implantation with Ion Exchange," in Asia Communications and Photonics Conference and Exhibition, Technical Digest (CD) (Optical Society of America, 2009), paper WL31.
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