We report on the fabrication and characterization of optical-stripe waveguides in neodymium-doped calcium barium niobate (Nd:CBN) crystals by using He ion implantation assisted with a mask. The guided-mode profiles are successfully modeled through numerical simulations. After annealing at 200 deg C for 30 min, the waveguide propagation loss could be reduced down to approx3 dB/cm. Room-temperature microluminescence and micro-Raman investigations reveal that the crystal bulk features are well preserved in the active volume of the waveguide, suggesting possible applications as integrated photonic devices.
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机译：我们报告了在氦掺杂铌酸钡钡（Nd：CBN）晶体中通过使用带掩模的He离子注入来制造和表征光学条形波导。引导模式轮廓通过数值模拟成功建模。在200摄氏度下退火30分钟后，波导传播损耗可以降低到大约3 dB / cm。室温微发光和微拉曼研究表明，晶体的主体特征在波导的有效体积中得到了很好的保留，这暗示了作为集成光子器件的可能应用。
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