在ＤＫＤＰ顺电体中观察到光学存储在铁电体中导致光极化常数可逆变化的光生伙打效应，特别是在铌酸锂中观察到的该效应是众所周知的。作者早先在晶体的顺电相发现的可逆光学损伤（那时介质的铁电极化几乎完全受到补偿），曾称为＊＊＊Ｐ在室温下的光致折变效应，并在文献... The photolabeling effect of optical storage in ferroelectrics resulting in a reversible change in photo-polarization constants is observed in DKDP paraelectrics, and this effect, which is observed in particular in lithium niobate, is well known. The reversible optical damage previously discovered by the authors in the paraelectric phase of the crystal (at that time the ferroelectric polarization of the medium was almost completely compensated), was called the photorefractive effect of *** P at room temperature and was reported in the literature ...