报道了在铌酸锂晶体中实现紫外激光诱导畴反转的实验。在一定外加均匀电场下,铌酸锂晶体中通过波长365 nm的紫外激光,由于紫外光的照射降低了矫顽电场只在通光区实现畴反转。研究表明,该方案可用于周期性极化铌酸锂的制备,并有望成为制作精细周期性畴结构的有效技术方案。 The experiment of UV laser induced domain inversion in lithium niobate crystal was reported. Under a certain applied electric field, the LiNbO3 crystal passes the ultraviolet laser with a wavelength of 365 nm, and the coercive electric field is reduced only by the ultraviolet light to achieve domain inversion in the light-passing region. The research shows that this scheme can be used to prepare periodically poled lithium niobate and is expected to be an effective solution for the fabrication of fine periodic domains.