A new and simple fabrication method of domain-inverted gratings in MgO:LiNbO3 is demonstrated. It was found that ultraviolet (UV) light irradiation reduces the voltage for inversion. Domain-inverted gratings of ∼15 µm period were fabricated by voltage application at room temperature under irradiation of UV light periodically-patterned using a photomask.
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Fujimura et al. (2003) studied this question.
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