Abstract
The influence of UV on realizing domain reverse in LiNbO3 Crystals is investigated experimentally. With a certain external electric field, some samples of LiNbO3 are illuminated by an ultraviolet laser of 365nm wavelength. For the reason that the coercive field of the crystals is reduced by exposure of UV, it is only the illuminated regions whose domains are reversed in pure LiNbO3 crystals, instead of in LiNbO3:Ru:Fe. The results prove that this method can be used to realize the fabrication of periodically poled LiNbO3 crystals, and it will become an effective solution for smaller periods.
© 2005 Optical Society of America
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