摘要
首次观察到了532nm强激光束在LiNbO_3,LiNbO_3:Li,LiNbO_3:Li.Zn,LiNbO_3:Mg4种晶体中异常衍射花样,测量了LiNbO_3晶体的透过曲线和吸收曲线,另外,当强激光束的波长为694nm时异常衍射花样将消失,根据上述实验提出了LiNbO_3光折变的机理。
The anomalous diffraction patterns of 532 nm strong laser beam in LiNbO3: Li; LiNbO3: Li, Zn; LiNbO3: Mg; LiNbO3 single crystal are observed for the first time. The transmission curve and absorption curve of LiNbO3 are measured. In addition, the anomalous diffraction patterns will not appear when the wave length of the strong laser beam is 694nm. For the above experiment we propose an analysis of the mechanism of photo-induced fractive index charge of LiNbO3.
出处
《北京工业大学学报》
CAS
CSCD
1993年第3期88-91,共4页
Journal of Beijing University of Technology
关键词
铌酸锂
晶体
光折变
异常衍射
lithium niobate crystal, photo - induced refractive index charge,anomalous diffraction
