Applied Optics and Photonics China最新文献

Self-powered photodetector with high performance based on PtSe2/MoSe2 van der Waals heterojunction 基于 PtSe2/MoSe2 范德华异质结的高性能自供电光电探测器

Applied Optics and Photonics China Pub Date : 2023-12-18 DOI: 10.1117/12.3007206

Chaoyi Zhang, Silu Peng, Jiayue Han, Chunyu Li, Hongxi Zhou, Yadong Jiang, Jun Wang

{"title":"Self-powered photodetector with high performance based on PtSe2/MoSe2 van der Waals heterojunction","authors":"Chaoyi Zhang, Silu Peng, Jiayue Han, Chunyu Li, Hongxi Zhou, Yadong Jiang, Jun Wang","doi":"10.1117/12.3007206","DOIUrl":"https://doi.org/10.1117/12.3007206","url":null,"abstract":"Due to the increasing demand for miniaturization and portability, the development of self-powered photodetectors that can work without external power supply has aroused great interest among researchers. As a group-10 layered transitional metal dichalcogenides, PtSe2 exhibits potential applications in photoelectric detection because of the unique properties such as high carrier mobility, tunable bandgap, and stability. However, its inherent large dark current hinders the further improvement of the performance of the PtSe2 photodetectors. In this paper, we fabricated a vertically aligned Two-dimensional (2D) van der Waals (vdWs) heterojunction composed of PtSe2 and MoSe2, which exhibits high sensitivity photoelectric detection performance in a wide band from visible light (405 nm) to near-infrared (1550 nm) without external bias. As a result, working in self-driving mode at room temperature, the responsivity and detectivity can reach 22.95 A W-1 and 9.27×1011 Jones with a fast response speed of 180/48 μs. This work is expected to provide a new idea for broadband, energy-efficient and high-performance miniaturized detectors.","PeriodicalId":502341,"journal":{"name":"Applied Optics and Photonics China","volume":"24 4","pages":"129630P - 129630P-11"},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139173078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Aerial infrared target tracking algorithm based on kernel correlation filtering and SIFT features in complex background 基于核相关滤波和 SIFT 特征的复杂背景下航空红外目标跟踪算法

Applied Optics and Photonics China Pub Date : 2023-12-18 DOI: 10.1117/12.3007640

Chunxu Li, Bo Lou, Shiwei Guo

引用次数: 0

Rotating target detection for nearshore SAR ships based on improved YOLOv7 基于改进型 YOLOv7 的近岸搜救船旋转目标探测

Applied Optics and Photonics China Pub Date : 2023-12-18 DOI: 10.1117/12.2692585

Kai Zhao, Ruitao Lu, Siyu Wang, Xiaogang Yang, Fangjia Lian

{"title":"Rotating target detection for nearshore SAR ships based on improved YOLOv7","authors":"Kai Zhao, Ruitao Lu, Siyu Wang, Xiaogang Yang, Fangjia Lian","doi":"10.1117/12.2692585","DOIUrl":"https://doi.org/10.1117/12.2692585","url":null,"abstract":"To address the problems of complex background of land buildings and islands in near-shore SAR image ship detection, dense ship docking, and thus inaccurate localization and target miss detection, we propose a YOLOv7 near-shore SAR ship rotation target detection model based on the attention mechanism and KLD improvement. Firstly, considering the lack of attention mechanism and remote dependency of YOLOv7, CA attention mechanism is added to the backbone network to improve the model context encoding capability and enhance the model accuracy. Secondly, the 3D nonreference attention mechanism SimAm is introduced to further improve the attention to ship features. Finally, the angular information is considered for the problem that the ship targets of SAR images are closely aligned in any direction. KLD is used as the localization loss function. The experimental results on the SSDD dataset show that the improved algorithm in this paper improves AP by 14.34% in near-shore scenes and the same in offshore scenes, with 2.22% improvement in all scenes relative to the original YOLOv7 model. The experimental results show that the algorithm applies to detecting ship targets in any direction in the near-shore scenes.","PeriodicalId":502341,"journal":{"name":"Applied Optics and Photonics China","volume":"22 ","pages":"1296002 - 1296002-10"},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139173462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

TE-pass polarizers based on mode rotation and coupling in SOI platform 基于 SOI 平台模式旋转和耦合的 TE 通偏振器

Applied Optics and Photonics China Pub Date : 2023-12-18 DOI: 10.1117/12.3006439

Siyan Chen, Ningfang Song, Zhiyu Guo, Zuchen Zhang

引用次数: 0

Study on nanosecond pulse laser propulsion microspheres based on a tapered optical fiber in water environment 基于锥形光纤的纳秒脉冲激光推进微球在水环境中的研究

Applied Optics and Photonics China Pub Date : 2023-12-18 DOI: 10.1117/12.3005074

Gaoqian Zhou, Hanyang Li, Xulong Yang, Yang Ge

引用次数: 0

A digital representation algorithm for long distance transmission laser spot energy intensity distribution 长距离传输激光光斑能量强度分布的数字表示算法

Applied Optics and Photonics China Pub Date : 2023-12-18 DOI: 10.1117/12.3007946

Ning Su, Xiaoke Dai, Liang Sun

引用次数: 0

Automatic correction method of optical microscope displacement stage based on Hough transform 基于 Hough 变换的光学显微镜位移台自动校正方法

Applied Optics and Photonics China Pub Date : 2023-12-18 DOI: 10.1117/12.3007590

Yu Zhang, Yao Fan, Chao Zuo

引用次数: 0

Ag-nanoparticle-decorated ZnO/ZnSe core-shell heterostructure and its enhanced photoelectrochemical performance Ag-纳米粒子装饰的 ZnO/ZnSe 核壳异质结构及其增强的光电化学性能

Applied Optics and Photonics China Pub Date : 2023-12-18 DOI: 10.1117/12.2692780

Hui Wu, Jialong Peng, Zhihong Zhu

引用次数: 0

Research on accuracy and optimization for some baseline removal algorithms for high-throughput experiments 高通量实验中一些基线去除算法的精度和优化研究

Applied Optics and Photonics China Pub Date : 2023-12-18 DOI: 10.1117/12.3004264

Zhenyao Li, Yu Zhu, Shengxing Song, Zhanqiang Ru, Zhizheng Yin, Nan Liu, Peng Ding, Fei Wu, Helun Song

引用次数: 0

Adaptive non-uniformity correction based on multi model particle filter 基于多模型粒子滤波器的自适应非均匀性校正

Applied Optics and Photonics China Pub Date : 2023-12-18 DOI: 10.1117/12.3007582

Honglie Xu, Chunhua Yang, Qilian Cui

{"title":"Adaptive non-uniformity correction based on multi model particle filter","authors":"Honglie Xu, Chunhua Yang, Qilian Cui","doi":"10.1117/12.3007582","DOIUrl":"https://doi.org/10.1117/12.3007582","url":null,"abstract":"In the process of scene based non-uniformity correction, the scene is often changeable, and the corresponding detector operating range of different temperature scenes is different, and their nonuniformity parameters are also different, so when the scene changes, the non-uniformity parameters will also drift, and it is easy to introduce serious ghosts in the correction results, which greatly reduces the Rate of convergence of the algorithm, This poses serious problems for real-time non-uniformity correction algorithms. At the same time, the scene is very flexible, and a single model cannot describe the scene well. Therefore, on the basis of treating the dynamic change process of the scene as a Markov process, this article proposes an adaptive non-uniformity correction algorithm based on Multi Model Particle Filter (PF-NUC). By introducing a tracking framework of particle filter, a nonlinear and non Gaussian parameter estimation model is established. Through experimental simulation verification, after the algorithm proposed in this article, almost no ghosts or residual non-uniformity can be seen. Through visual evaluation, the PF-NUC method has the best ability to remove fixed pattern noise.","PeriodicalId":502341,"journal":{"name":"Applied Optics and Photonics China","volume":"39 ","pages":"129630W - 129630W-7"},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139174158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0