基于飞秒激光诱导双折射效应的时间胶囊的制备(特邀)  

Fabrication of Time Capsules by Femtosecond Laser-induced Birefringence(Invited)

作　　者：王琳 樊华[2] 李臻赜 王熠[2] 胥亦实 王磊[1] 陈岐岱[1] WANG Lin;FAN Hua;LI Zhenze;WANG Yi;XU Yishi;WANG Lei;CHEN Qidai(College of Electronic Science&Engineering,Jilin University,Changchun,130012,China;Department of Precision Instrument,Tsinghua University,Beijing,100000,China)

机构地区：[1]吉林大学电子科学与工程学院,长春130012 [2]清华大学精密仪器系,北京100000

出　　处：《光子学报》2021年第6期58-65,共8页Acta Photonica Sinica

基　　金：国家重点研发计划(No.2017YFB1104600)。

摘　　要：利用双折射显微镜和光学显微镜研究了飞秒激光石英材料内部诱导的双折射效应。结果表明,双折射的光学延迟量随脉冲数的增加而增加,并出现两种双折射结构。其中Type X结构需要至少20个脉冲,单脉冲能量不高于854 nJ,脉冲宽度不低于300 fs且不高于600 fs。此外,以"光子学报"等汉字为例,阐述了激光诱导双折射的数据存储过程,制备了包涵吉林省省史省情、吉林大学校史、清华大学校史的数据存储时间胶囊样品。Femtosecond laser-induced birefringent voxels were explored by using birefringent microscope and optical microscope.It shows that the retardance increases as the pulse number increases.Two types of structures are found.Type X structures require at least 20 pulses and single pulse energy no more than 854 nJ.More,the pulse duration must limited between 300 fs and 600 fs.Additionally,the data storage process is presented by taking Chinese characters of"Acta Photonica Sinica"as example.Time capsules containing the history of Jilin Province,the history of Jilin University,and the history of Tsinghua University are prepared.

关 键 词：超快激光 光存储 超快激光加工 双折射效应 数据存储 

分 类 号：TN249[电子电信—物理电子学]