Abstract
In this paper, we report on the fabrication of planar waveguides in z-cut Nd:SGG crystals, using 500keV He ion implantation with fluences of 3×1016ions/cm2 at 77K1×1016ions/cm2 at room temperature, annealed at 260°C for 30min. The guiding modes of the planar waveguides were measured by the prism-coupling method at 633nm. The near-field intensity distribution and propagation loss of the light in the waveguides were measured by the end-fire coupling method. The absorption spectra were also measured. The refractive index profile was reconstructed using the intensity calculation method, and the light propagation mode was simulated with the finite-difference beam propagation method. The calculated results were in good agreement with the measured waveguide modes, indicating the feasibility of these designable devices.
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