Abstract
We report on recent results by surface periodic poling on Lithium Niobate and Lithium Tantalate. Such approach allows periodic inversion of the second order susceptibility with nanoscale features using insulating masks. We achieved a world-best 200nm feature size, as well as good compatibility with alpha-phase proton exchanged channel waveguides in Lithium Niobate. Preliminary results of surface periodic poling in Lithium Tantalate also show similar characteristics. Surface poling is best suited for integrated optics devices in technologically-demanding configurations such as backward second harmonic generation and counter propagating optical parametric amplification. ©2006 IEEE.
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Busacca, A., Cherchi, M., Santini, C., Riva-Sanseverino, S., Parisi, A., Cino, A., … Assanto, G. (2006). Nanopatterned ferroelectric crystals for parametric generation. In 2006 International Conference on Transparent Optical Networks (Vol. 2, pp. 269–272). https://doi.org/10.1109/ICTON.2006.248333
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