{"title":"双通道偏振复用可擦除介质型全息超表面","authors":"刘亮 Liu Liang, 周绍林 Zhou Shaolin, 全海洋 Quan Haiyang, 刘俊伯 Liu Junbo, 王建 Wang jian, 胡松 Hu Song","doi":"10.3788/cjl230730","DOIUrl":"https://doi.org/10.3788/cjl230730","url":null,"abstract":"为进一步增强加密或存储器件的实用性与安全性，设计并实现了一种多通道偏振复用的相变全息超表面，通过在多通道全息超表面设计中引入相变介质，实现了动态的可擦除功能。当耦合相变介质层处于非晶态时，所构造的编码超表面可以产生两个独立成像的全息通道。当相变介质变为晶态时，决定相位调控的交叉偏振被关闭，对应的相位编码“被擦除”。","PeriodicalId":47922,"journal":{"name":"CHINESE JOURNAL OF LASERS-ZHONGGUO JIGUANG","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135105973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"钝化层及P型基底结构优化对电子轰击型有源传感器电荷收集效率影响的研究","authors":"宋园园 Song Yuanyuan, 宋德 Song De, 李野 Li Ye, 陈卫军 Chen Weijun, 刘春阳 Liu Chunyang","doi":"10.3788/cjl221159","DOIUrl":"https://doi.org/10.3788/cjl221159","url":null,"abstract":"为获得高增益的电子轰击型有源传感器（EBAPS），对EBAPS成像器件中电子倍增层的电荷收集效率的影响因素进行了研究。基于载流子输运理论，采用蒙特卡罗方法研究了钝化层种类、厚度、入射电子能量、P型基底厚度和掺杂浓度对二次电子分布及收集的影响。结果表明：为提高入射电子的入射深度进而提高电荷收集效率，宜采用密度小的SiO2作为钝化层；为了减少钝化层对倍增电子的复合进而提高电荷收集效率，宜降低钝化层厚度和提高入射电子能量；为了降低倍增电子扩散过程中载流子的复合进而提高电荷收集效率，宜降低P型基底的厚度和掺杂浓度。","PeriodicalId":47922,"journal":{"name":"CHINESE JOURNAL OF LASERS-ZHONGGUO JIGUANG","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135106096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"强太赫兹脉冲产生及硒化镓晶体非线性效应研究","authors":"索鹏 Suo Peng, 王晨 Wang Chen, 李高芳 Li Gaofang, 孙凯文 Sun Kaiwen, 张文杰 Zhang Wenjie, 林贤 Lin Xian, 黄志明 Huang Zhiming, 马国宏 Ma Guohong","doi":"10.3788/cjl230798","DOIUrl":"https://doi.org/10.3788/cjl230798","url":null,"abstract":"为探索单周期或亚周期的强场太赫兹脉冲抽运下各种材料的非线性光学响应，基于铌酸锂（LiNbO3）晶体，采用飞秒脉冲倾斜波前技术，获得了单脉冲能量为2.6 μJ、峰值场强为632 kV/cm的强太赫兹脉冲输出，并在该辐射源的基础上搭建了太赫兹抽运-光探测系统。利用该系统研究了硒化镓（GaSe）晶体的非线性光学响应，观测到亚周期的太赫兹脉冲诱导的光学双折射，其引起的相位变化与普克尔斯效应和克尔效应相关。研究结果为强场太赫兹抽运下介质的非线性效应分析提供了思路，为材料的电光系数和非线性折射率系数的测定提供了借鉴。","PeriodicalId":47922,"journal":{"name":"CHINESE JOURNAL OF LASERS-ZHONGGUO JIGUANG","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135152261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
周奎 Zhou Kui, 李鹏 Li Peng, 胥汉勋 Xu Hanxun, 肖德鑫 Xiao Dexin, 王建新 Wang Jianxin, 罗星 Luo Xing, 沈旭明 Shen Xuming, 和天慧 He Tianhui, 陈立均 Chen Lijun, 闫陇刚 Yan Longgang, 王伟俊 Wang Weijun, 徐勇 Xu Yong, 刘宇 Liu Yu, 马帅 Ma Shuai, 桑子儒 Sang Ziru, 杨兴繁 Yang Xingfan, 吴岱 Wu Dai, 黎明 Li Ming.
{"title":"激光沉积制造翘曲变形检测与开裂预测研究","authors":"钦兰云 Qin Lanyun, 王昆 Wang Kun, 王伟 Wang Wei, 王向明 Wang Xiangming, 杨光 Yang Guang","doi":"10.3788/cjl221501","DOIUrl":"https://doi.org/10.3788/cjl221501","url":null,"abstract":"翘曲变形与开裂是激光沉积制造大型整体结构的瓶颈，限制了该技术的发展。为解决这一难题，笔者基于表面形貌监测系统提出了一种翘曲变形原位检测及开裂预测新算法。通过坐标系校准、滤波降噪、曲面重构等实现了原位检测与数据预处理，采用旋转切片和平行切片两种方案求取切片与重构表面的交线，计算交线的翘曲角与翘曲角变化量，根据翘曲阈值与开裂阈值判定翘曲变形并预测开裂。设定的阈值与制件尺寸呈反比关系，与翘曲度呈正比关系。实验结果表明：翘曲样件X向的最大翘曲角为3.98°，且该方向所有交线的翘曲角均超出了翘曲阈值（3.27°），判定发生翘曲变形；薄壁件开裂影响区内翘曲角的最大值在第46~51层呈连续正增长趋势，翘曲角变化量为1.58°，且80%的交线的翘曲角变化量超出了开裂阈值（1.53°），判定即将发生开裂，继续沉积至第55层时出现开裂。通过实验证实了所提算法检测翘曲与预测开裂的有效性，对激光沉积制造技术的发展具有重要意义。","PeriodicalId":47922,"journal":{"name":"CHINESE JOURNAL OF LASERS-ZHONGGUO JIGUANG","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135105967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"多维调制的全息加密光存储","authors":"林达奎 Lin Dakui, 宋海洋 Song Haiyang, 李枷楠 Li Jianan, 王琨 Wang Kun, 林枭 Lin Xiao, 谭小地 Tan Xiaodi","doi":"10.3788/cjl230726","DOIUrl":"https://doi.org/10.3788/cjl230726","url":null,"abstract":"大数据时代对数据存储提出了新的需求，数据的存储安全关乎社会稳定与发展。全息加密光存储具有高存储密度、快读取速度、长保存寿命等特点，为海量数据存储提供了有效的解决方案，是保障数据存储安全的有力手段。聚焦于全息光存储领域，论述了以振幅、相位和偏振等作为调制变量的全息加密光存储的基本原理，介绍了常见的全息加密光存储技术及其性能影响因素，梳理了大量密钥的管理方法，最后总结了各技术特点，并对全息加密光存储的未来发展进行了展望。","PeriodicalId":47922,"journal":{"name":"CHINESE JOURNAL OF LASERS-ZHONGGUO JIGUANG","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135105969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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