应用于高密度多层光存储的聚合物基存储介质  

Polymer-Based Storage Media for High-Density Multilayer Optical Storage Applications

作　　者：段宇豪 杨凤英 丁奕同 熊英[1] 郭少云[1] Yuhao Duan;Fengying Yang;Yitong Ding;Ying Xiong;Shaoyun Guo(State Key Laboratory of Polymer Materials Engineering,Polymer Research Institute of Sichuan University,Sichuan Provincial Engineering Laboratory of Plastic/Rubber Complex Processing Technology,Chengdu 610065,China)

机构地区：[1]高分子材料工程国家重点实验室(四川大学),四川大学高分子研究所,四川省橡塑材料复合成型技术工程实验室,四川成都610065

出　　处：《高分子材料科学与工程》2024年第7期112-122,共11页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(52173042)。

摘　　要：飞秒微爆多层光存储是一种新型光存储技术,它通过在介质内部记录多层数据,成倍地扩充了光盘容量极限,有望解决传统光盘容量过低的问题。但由于飞秒微爆多层光存储信息记录过程受到多种材料因素的共同影响,导致长期缺乏介质材料选择的理论依据。文中选择误码率作为光存储性能的关键指标,测试对比了不同光学树脂的光存储性能。采用相关系数量化了材料的力学性质、热性质、光学性质、介电常数和高分子链结构与光存储性能之间的依赖关系,从而揭示出光学树脂的高分子链结构才是影响光存储性能的决定性影响因素。基于此发现,在聚甲基丙烯酸甲酯材料中实现了60层高密度多层光存储信息读写测试,容量密度达到1600 Gbits/cm^(3)。Femtosecond microburst multi-layer optical storage,which records data across multiple layers within a medium,promises to significantly expand the capacity limits of optical discs,potentially overcoming the issue of insufficient traditional optical disc storage.However,the process of data recording is affected by various factors,leading to a lack of theoretical basis for medium material selection.This study identified the bit error rate as key indicator of optical storage performance and compared the optical storage capabilities of different optical resins.The relationship between material mechanical properties,thermal properties,optical properties,dielectric constants,and the main chain structure with optical storage performance was quantified,revealing that the main chain structure of optical resins is the decisive factor affecting optical storage performance.Based on these findings,high-density multi-layer optical storages were conducted on polymethyl methacrylate materials,achieving a storage density of 1600 Gbit/cm^(3) with up to 60 layers.This research underscored the significance of main chain structure in enhancing optical storage performance,providing a perspective for material selection in femtosecond microburst multi-layer optical storage.

关 键 词：光存储 存储介质 飞秒激光 多光子吸收 

分 类 号：TP333[自动化与计算机技术—计算机系统结构]