在LiNbO_3:Fe晶体中写入偶数序列孤子的实验研究  

Experimental study on an even-number sequence of solitons written in LiNbO_3:Fe crystal

作　　者：张玉虹[1,2] 卢克清[1] 张美志[3] 孙婷[4] 

机构地区：[1]中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室,陕西西安710119 [2]西安工业大学,陕西西安710032 [3]西安邮电学院,陕西西安710061 [4]西安应用光学研究所,陕西西安710065

出　　处：《光电子．激光》2010年第7期1093-1096,共4页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(10474136;10674176)

摘　　要：利用部分空间非相干光穿过振幅掩模的方法产生一暗纹,基于LiNbO3:Fe晶体的强光伏效应,在无背景光辐照时,在晶体内写入一维部分空间非相干偶数序列孤子.当入射暗纹宽度为13.4μm时,暗纹只能分裂为Y结孤子对;当入射宽度等于20.1μm时,暗纹分裂为4个孤子.实验结果表明:在无背景光辐射时,可以在LiNbO3:Fe晶体内写入部分空间非相干偶数序列暗光伏孤子.A dark stripe is generated when the partially spatially incoherent beam passes through amplitude mark.Based on bulk photovoltaic effect in LiNbO3：Fe crystal,one-dimensional even-number sequence of solitons with partially spatially incoherent beam is written in crystal without background illumination.When the width of the dark stripe is 13.4 μm,the stripe only splits into Y-junction solitons.However,the dark stripe splits into quadratic-solition when the width of the dark stripe is 20.1 μm.The experimental results reveal that an even-number sequence of dark photovoltaic soliton with partially spatially incoherent beam can be written in LiNbO3：Fe crystal without background illumination.

关 键 词：光折变空间孤子 振幅掩模 部分空间非相干 

分 类 号：O437.5[机械工程—光学工程]