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| 1 | 计算光学成像:何来,何处,何去,何从?显示文摘计算光学成像是一种通过联合优化光学系统和信号处理以实现特定成像功能与特性的新兴研究领域。它并不是光学成像和数字图像处理的简单补充,而是前端(物理域)的光学调控与后端(数字域)信息处理的有机结合,通过对照明、成像系统进行光学编码与数学建模,以计算重构的方式获取图像与信息。这种新型的成像方式将有望突破传统光学成像技术对光学系统以及探测器制造工艺、工作条件、功耗成本等因素的限制,使其在功能(相位、光谱、偏振、光场、相干度、折射率、三维形貌、景深延拓,模糊复原,数字重聚焦,改变观测视角)、性能(空间分辨、时间分辨、光谱分辨、信息维度与探测灵敏度)、可靠性、可维护性等方面获得显著提高。现阶段,计算光学成像已发展为一门集几何光学、信息光学、计算光学、现代信号处理等理论于一体的新兴交叉技术研究领域,成为光学成像领域的国际研究重点和热点,代表了先进光学成像技术的未来发展方向。国内外众多高校与科研院所投身其中,使该领域全面进入了“百花齐放,百家争鸣”的繁荣发展局面。作为本期《红外与激光工程》——南京理工大学专刊“计算光学成像技术”专栏的首篇论文,本文概括性地综述了计算光学成像领域的历史沿革、发展现状、并展望其未来发展方向与所依赖的核心赋能技术,以求抛砖引玉。 | 左超 陈钱 | 2022 | 红外与激光工程2022，51，2： | 25 |
| 2 | 海洋颗粒物的原位细致分类、应用与展望显示文摘海洋中各种微小颗粒物无处不在,它们与海洋物理过程、化学过程、生物和地质沉积等几乎都有关联,尤其在海洋碳循环中起着不可忽视的作用。但长期以来人们对海洋颗粒物的原位观测技术,以及对观测数据的细致分类仍不能满足需求。偏振光散射测量对散射颗粒的粒径、形态和亚细胞层次的微观结构特征十分敏感,测量结果可用于对复杂的海洋颗粒物结构特征甚至海洋生物的生理状态进行定量表征和细致分类。实现偏振光散射的原位动态监测已经在海洋环境监测领域展示出诱人的应用潜力。简单介绍海洋颗粒物的检测方法,重点介绍基于偏振光散射的颗粒物细致分类方法和初步应用,并对其未来的发展方向进行展望。 | 李嘉晋 廖然 马辉 | 2022 | 光学学报2022，42，6： | 2 |
| 3 | Towards higher-dimensional structured light显示文摘Structured light refers to the arbitrarily tailoring of optical fields in all their degrees of freedom(DoFs),from spatial to temporal.Although orbital angular momentum(OAM)is perhaps the most topical example,and celebrating 30 years since its connection to the spatial structure of light,control over other DoFs is slowly gaining traction,promising access to higher-dimensional forms of structured light.Nevertheless,harnessing these new DoFs in quantum and classical states remains challenging,with the toolkit still in its infancy.In this perspective,we discuss methods,challenges,and opportunities for the creation,detection,and control of multiple DoFs for higher-dimensional structured light.We present a roadmap for future development trends,from fundamental research to applications,concentrating on the potential for larger-capacity,higher-security information processing and communication,and beyond. | Chao He Yijie Shen Andrew Forbes | 2022 | Light(Science & Applications)2022，11，8： | 1 |
| 4 | Large-area ultracompact pixelated aluminumwire-grid-based metamaterials for Vis-NIR full-Stokes polarization imaging显示文摘The study of pixelated metamaterials that integrate both the functions of linear and circular polarization filters is rapidly growing due to the need for full-Stokes polarization imaging. However, there is a lack of large-area, ultracompact pixelated full-Stokes metamaterials with excellent performance, especially circular polarization filters with a high extinction ratio, a broad operating bandwidth, and a low-cost, high-quality, efficient manufacturing process, which limits the practical applications of pixelated full-Stokes metamaterials. In this study, we propose a universal design and fabrication scheme for large-area, ultracompact pixelated aluminum wire-grid-based metamaterials used in Vis-NIR full-Stokes polarization imaging. The aluminum wire-grid was designed as a linear polarization filter with an average linear polarization extinction ratio of 36,000 and a circular polarization filter with an average circular polarization extinction ratio of 110 in Vis-NIR. A large-area, ultracompact 320 × 320pixelated aluminum wire-grid-based full-Stokes metamaterial was fabricated using nanoimprint lithography and nano transfer printing with the advantages of low cost and high efficiency. This metamaterial was used to achieve full-Stokes polarization imaging with errors within 8.77%, 12.58%, 14.04%, and 25.96% for Stokes parameters S_(0), S_(1), S_(2), and S_(3), respectively. The inversion errors of the compensated Stokes parameters can be reduced to0.21%, 0.21%, 0.42%, and 1.96%, respectively. | YUANYI FAN JINKUI CHU RAN ZHANG CHUANLONG GUAN JIANYING LIU | 2023 | Photonics Research2023，11，11： | 0 |
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