Opto-Electronic Advances最新文献_第8页

Adaptive optics based on machine learning: a review 基于机器学习的自适应光学:综述

IF 14.1 1区物理与天体物理

Opto-Electronic Advances Pub Date : 2022-01-01 DOI: 10.29026/oea.2022.200082

Youming Guo, Libo Zhong, Lei Min, Jiaying Wang, Yu Wu, Kele Chen, K. Wei, C. Rao

引用次数: 41

Two-photon absorption and stimulated emission in poly-crystalline Zinc Selenide with femtosecond laser excitation 飞秒激光激发多晶硒化锌的双光子吸收与受激发射

IF 14.1 1区物理与天体物理

Opto-Electronic Advances Pub Date : 2022-01-01 DOI: 10.29026/oea.2022.210036

Qianliang Li, W. Perrie, Zhao-feng Li, S. Edwardson, G. Dearden

{"title":"Two-photon absorption and stimulated emission in poly-crystalline Zinc Selenide with femtosecond laser excitation","authors":"Qianliang Li, W. Perrie, Zhao-feng Li, S. Edwardson, G. Dearden","doi":"10.29026/oea.2022.210036","DOIUrl":"https://doi.org/10.29026/oea.2022.210036","url":null,"abstract":"The optical nonlinearity in polycrystalline zinc selenide (ZnSe), excited with 775 nm, 1 kHz femtosecond laser pulses was investigated via the nonlinear transmission with material thickness and the Z scan technique. The measured two photon absorption coefficient β was intensity dependent, inferring that reverse saturated absorption (RSA) is also relevant during high intensity excitation in ZnSe. At low peak intensity I < 5 GW cm –2 , we find β = 3.5 cm GW –1 at 775 nm. The spectral properties of the broad blueish two-photon induced fluorescence (460 nm-500 nm) was studied, displaying self-ab-sorption near the band edge while the upper state lifetime was measured to be τ e ~ 3.3 ns. Stimulated emission was observed when pumping a 0.5 mm thick polycrystalline ZnSe sample within an optical cavity, confirmed by significant line narrowing from Δ λ = 11 nm (cavity blocked) to Δ λ = 2.8 nm at peak wavelength λ p = 475 nm while the upper state lifetime also decreased. These results suggest that with more optimum pumping conditions and crystal cooling, polycrystalline ZnSe might reach lasing threshold via two-photon pumping at λ = 775 nm.","PeriodicalId":19611,"journal":{"name":"Opto-Electronic Advances","volume":"1 1","pages":""},"PeriodicalIF":14.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69516594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}

引用次数: 8

Crosstalk-free achromatic full Stokes imaging polarimetry metasurface enabled by polarization-dependent phase optimization 无串扰消色差全Stokes成像偏振测量超表面由偏振相关相位优化实现

IF 14.1 1区物理与天体物理

Opto-Electronic Advances Pub Date : 2022-01-01 DOI: 10.29026/oea.2022.220058

Yaxin Zhang, M. Pu, Jinjin Jin, Xinjian Lu, Yinghui Guo, Jixiang Cai, Fei Zhang, Yingli Ha, Qiong He, Mingfeng Xu, Xiong Li, Xiaoliang Ma, Xiangang Luo

{"title":"Crosstalk-free achromatic full Stokes imaging polarimetry metasurface enabled by polarization-dependent phase optimization","authors":"Yaxin Zhang, M. Pu, Jinjin Jin, Xinjian Lu, Yinghui Guo, Jixiang Cai, Fei Zhang, Yingli Ha, Qiong He, Mingfeng Xu, Xiong Li, Xiaoliang Ma, Xiangang Luo","doi":"10.29026/oea.2022.220058","DOIUrl":"https://doi.org/10.29026/oea.2022.220058","url":null,"abstract":"Imaging polarimetry is one of the most widely used analytical technologies for object detection and analysis. To date, most metasurface-based polarimetry techniques are severely limited by narrow operating bandwidths and inevitable crosstalk, leading to detrimental effects on imaging quality and measurement accuracy. Here, we propose a crosstalk-free broadband achromatic full Stokes imaging polarimeter consisting of polarization-sensitive dielectric metalenses, implemented by the principle of polarization-dependent phase optimization. Compared with the single-polarization optimization method, the average crosstalk has been reduced over three times under incident light with arbitrary polarization ranging from 9 μm to 12 μm, which guarantees the measurement of the polarization state more precisely. The experimental results indicate that the designed polarization-sensitive metalenses can effectively eliminate the chromatic aberration with polarization selectivity and negligible crosstalk. The measured average relative errors are 7.08%, 8.62%, 7.15%, and 7.59% at 9.3, 9.6, 10.3, and 10.6 μm, respectively. Simultaneously, the broadband full polarization imaging capability of the device is also verified. This work is expected to have potential applications in wavefront detection, remote sensing","PeriodicalId":19611,"journal":{"name":"Opto-Electronic Advances","volume":"1 1","pages":""},"PeriodicalIF":14.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69520129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}

引用次数: 49

Nonlinear optics with structured light 非线性光学与结构光

IF 14.1 1区物理与天体物理

Opto-Electronic Advances Pub Date : 2022-01-01 DOI: 10.29026/oea.2022.210174

W. Buono, A. Forbes

引用次数: 23

Giant magneto field effect in up-conversion amplified spontaneous emission via spatially extended states in organic-inorganic hybrid perovskites 有机-无机杂化钙钛矿空间扩展态上转换放大自发发射的巨磁场效应

IF 14.1 1区物理与天体物理

Opto-Electronic Advances Pub Date : 2022-01-01 DOI: 10.29026/oea.2022.200051

Tangyao Shen, J. Qin, Yujie Bai, Jia Zhang, Lei Shi, X. Hou, Jian Zi, B. Hu

引用次数: 1

Graphene-empowered dynamic metasurfaces and metadevices 石墨烯驱动的动态元表面和元器件

IF 14.1 1区物理与天体物理

Opto-Electronic Advances Pub Date : 2022-01-01 DOI: 10.29026/oea.2022.200098

Chao Zeng, Hua Lu, D. Mao, Yueqing Du, He Hua, Wei Zhao, Jianlin Zhao

{"title":"Graphene-empowered dynamic metasurfaces and metadevices","authors":"Chao Zeng, Hua Lu, D. Mao, Yueqing Du, He Hua, Wei Zhao, Jianlin Zhao","doi":"10.29026/oea.2022.200098","DOIUrl":"https://doi.org/10.29026/oea.2022.200098","url":null,"abstract":"Metasurfaces, with extremely exotic capabilities to manipulate electromagnetic (EM) waves, have derived a plethora of advanced metadevices with intriguing functionalities. Tremendous endeavors have been mainly devoted to the static metasurfaces and metadevices, where the functionalities cannot be actively tuned in situ post-fabrication. Due to the intrinsic advantage of active tunability by external stimulus, graphene has been successively demonstrated as a favorable candidate to empower metasurfaces with remarkably dynamic tunability, and their recent advances are propelling the EM wave manipulations to a new height: from static to dynamic. Here, we review the recent progress on dynamic metasurfaces and metadevices enabled by graphene with the focus on electrically-controlled dynamic manipulation of the EM waves covering the mid-infrared, terahertz, and microwave regimes. The fundamentals of graphene, including basic material properties and plasmons, are first discussed. Then, graphene-empowered dynamic metasurfaces and metadevices are divided into two categories, i.e., metasurfaces with building blocks of structured graphene and hybrid metasurfaces integrated with graphene, and their recent advances in dynamic spectrum manipulation, wavefront shaping, polarization control, and frequency conversion in near/far fields and global/local ways are elaborated. In the end, we summarize the progress, outline the remaining challenges, and prospect the potential future developments.","PeriodicalId":19611,"journal":{"name":"Opto-Electronic Advances","volume":"1 1","pages":""},"PeriodicalIF":14.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69515718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}

引用次数: 28

Highly efficient emission and high-CRI warm white light-emitting diodes from ligand-modified CsPbBr3 quantum dots 由配体修饰的CsPbBr&lt；sub>3</sub&gt；量子点制成的高效发射和高显色暖白光发光二极管

1区物理与天体物理

Opto-Electronic Advances Pub Date : 2022-01-01 DOI: 10.29026/oea.2022.200075

Dongdong Yan, Shuangyi Zhao, Yubo Zhang, Huaxin Wang, Zhigang Zang

{"title":"Highly efficient emission and high-CRI warm white light-emitting diodes from ligand-modified CsPbBr3 quantum dots","authors":"Dongdong Yan, Shuangyi Zhao, Yubo Zhang, Huaxin Wang, Zhigang Zang","doi":"10.29026/oea.2022.200075","DOIUrl":"https://doi.org/10.29026/oea.2022.200075","url":null,"abstract":"All-inorganic CsPbBr3 perovskite quantum dots (QDs) have received great attention in white light emission because of their outstanding properties. However, their practical application is hindered by poor stability. Herein, we propose a simple strategy to synthesize excellent stability and efficient emission of CsPbBr3 QDs by using 2-hexyldecanoic acid (DA) as a ligand to replace the regular oleic acid (OA) ligand. Thanks to the strong binding energy between DA ligand and QDs, the modified QDs not only show a high photoluminescence quantum yield (PLQY) of 96% but also exhibit high stability against ethanol and water. Thereby warm white light-emitting diodes (WLEDs) are constructed by combining ligand modified CsPbBr3 QDs with red AgInZnS QDs on blue emitting InGaN chips, exhibiting a color rendering index of 93, a power efficiency of 64.8 lm/W, a CIE coordinate of (0.44, 0.42) and correlated color temperature value of 3018 K. In addition, WLEDs based on ligand modified CsPbBr3 QDs also exhibit better thermal performance than that of WLEDs based on the regular CsPbBr3 QDs. The combination of improved efficiency and better thermal stability with high color quality indicates that the modified CsPbBr3 QDs are ideal for WLEDs application.","PeriodicalId":19611,"journal":{"name":"Opto-Electronic Advances","volume":"5 1","pages":"200075-200075"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.oejournal.org/data/article/export-pdf?id=61f1f93099d881528090e6b1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147905383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 141

Broad-band spatial light modulation with dual epsilon-near-zero modes 具有双epsilon-近零模式的宽带空间光调制

IF 14.1 1区物理与天体物理

Opto-Electronic Advances Pub Date : 2022-01-01 DOI: 10.29026/oea.2022.200093

Long Wen, Xianghong Nan, Jiaxiang Li, David R. S. Cumming, Xin Hu, Qin Chen

引用次数: 8

Advances in femtosecond laser direct writing of fiber Bragg gratings in multicore fibers: technology, sensor and laser applications 飞秒激光直写多芯光纤Bragg光栅的研究进展:技术、传感器和激光应用

IF 14.1 1区物理与天体物理

Opto-Electronic Advances Pub Date : 2022-01-01 DOI: 10.29026/oea.2022.210055

Alexey Wolf, A. Dostovalov, Kirill Bronnikov, M. Skvortsov, Stefan Wabnitz, S. Babin

引用次数: 24

An overview on the principle of inkjet printing technique and its application in micro-display for augmented/virtual realities 综述了喷墨打印技术的原理及其在增强/虚拟现实微显示中的应用