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End-to-end computational design for an EUV solar corona multispectral imager with stray light suppression

Astronomical Techniques and Instruments 2024年第1期1卷 31-41页

作者： Jinming Gao Yue Sun Yinxu Bian Jilong Peng Qian Yu Cuifang Kuang xiangzhao wang Xu Liu Xiangqun Cui State Key Laboratory of Extreme Photonics and Instrumentation College of Optical Science and EngineeringZhejiang UniversityHangzhou 310027China ZJU-Hangzhou Global Scientific and Technological Innovation Center Zhejiang UniversityHangzhou 310027China Nanjing Institute of Astronomical Optics&Technology Chinese Academy of SciencesNanjing 210042China Beijing Environmental Satellite Engineering Institute Beijing 100094China

An extreme ultraviolet solar corona multispectral imager can allow direct observation of high temperature coronal plasma,which is related to solar flares,coronal mass ejections and other significant coronal *** manuscript proposes a novel end-to-end computational design method for an extreme ultraviolet(EUV)solar corona multispectral imager operating at wavelengths near 100 nm,including a stray light suppression design and computational image *** suppress the strong stray light from the solar disk,an outer opto-mechanical structure is designed to protect the imaging component of the *** the low reflectivity(less than 70%)and strong-scattering(roughness)of existing extreme ultraviolet optical elements,the imaging component comprises only a primary mirror and a curved grating.A Lyot aperture is used to further suppress any residual stray ***,a deep learning computational imaging method is used to correct the individual multi-wavelength images from the original recorded multi-slit *** results and data,this can achieve a far-field angular resolution below 7",and spectral resolution below 0.05 *** field of view is±3 R_(☉)along the multi-slit moving direction,where R☉represents the radius of the solar *** ratio of the corona's stray light intensity to the solar center's irradiation intensity is less than 10-6 at the circle of 1.3 R_(☉).

关键词： EUV solar corona imager Curved grating Stray light suppression Computational multispectral imaging

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Ronchi剪切干涉仪高精度相位提取及误差分析

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中国激光 2024年第11期51卷 537-549页

作者：常春超李中梁卢云君王向朝中国科学院上海光学精密机械研究所信息光学与光电技术实验室上海201800 中国科学院大学材料与光电研究中心北京100049 浙江大学光电科学与工程学院浙江杭州310027 浙江大学极端光学技术与仪器全国重点实验室浙江杭州310058

双光栅Ronchi剪切干涉是一种基于瞳面测量的波像差检测技术,该技术具有无需参考面、共光路测量以及结构简单、易于集成等优点,适用于光刻投影物镜波像差的在线检测。相位提取是采用该技术进行波像差检测的重要步骤,直接影响最终的测量... 详细信息

双光栅Ronchi剪切干涉是一种基于瞳面测量的波像差检测技术,该技术具有无需参考面、共光路测量以及结构简单、易于集成等优点,适用于光刻投影物镜波像差的在线检测。相位提取是采用该技术进行波像差检测的重要步骤,直接影响最终的测量精度。针对双光栅Ronchi剪切干涉仪高阶衍射光影响相位提取精度的问题,提出了一种高精度的相位提取算法,可消除剪切干涉场中±1级衍射光重叠区域内高阶衍射光的干扰,提高剪切相位提取精度。仿真结果表明,该算法的剪切相位提取误差仅存在高频拟合残差,验证了该算法可有效抑制高阶衍射光的干扰。利用剪切率为0.058的双光栅Ronchi剪切干涉系统进行了实验,并与基于双光纤的点衍射干涉仪的测量结果进行对比,两种方法的测量结果具有相同的波像差分布,验证了所提剪切相位提取算法的有效性。

关键词：干涉测量 Ronchi剪切干涉相位提取波像差检测光刻投影物镜剪切率

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河北省城市生活垃圾处理温室气体排放特征研究

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再生资源与循环经济 2024年第4期17卷 17-21页

作者：王琰涤王向召河北交规院瑞志交通技术咨询有限公司河北石家庄050090 北京北分瑞利分析仪器(集团)有限责任公司北京100086

以《省级温室气体清单编制指南(试行)》为依据,参考《2006年IPCC国家温室气体清单指南》等测算了河北省2015—2021年城市生活垃圾卫生填埋和焚烧处理过程温室气体排放量,分析生活垃圾的两种处理方式温室气体排放特征。结果标明:①河北... 详细信息

以《省级温室气体清单编制指南(试行)》为依据,参考《2006年IPCC国家温室气体清单指南》等测算了河北省2015—2021年城市生活垃圾卫生填埋和焚烧处理过程温室气体排放量,分析生活垃圾的两种处理方式温室气体排放特征。结果标明:①河北省生活垃圾卫生填埋量以每年3.6%的速率递减,焚烧量以每年25.0%速率递增,2019年两种处理方式处理量基本相当。②由于生活垃圾焚烧处理比例持续提升,河北省生活垃圾处理二氧化碳排放从2017年之后持续降低。③生活垃圾焚烧处理二氧化碳排放强度远低于卫生填埋排放强度,因此河北省生活垃圾处理二氧化碳减排的关键是生活垃圾卫生填埋处理比例进一步降低,焚烧处理比例进一步提高。

关键词：城市生活垃圾温室气体排放卫生填埋焚烧处理

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Control of polarization signal distortion by frequency domain phase conjugation in optical fiber systems

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Science China(Physics,Mechanics & Astronomy) 2008年第5期51卷 512-518页

作者： BU Yang wang xiangzhao Shanghai Institute of Optics and Fine Mechanics Chinese Academy of SciencesShanghai 201800China

Optical frequency domain phase conjugation(FDPC) is based on phase conjuga-tion of spectrum of an input *** is equivalent to the phase conjugation and the time reversal of the temporal envelope of an input *** use of FDPC to con-trol polarization signal distortion in birefringent optical fiber systems is *** of polarization signals in the system using midway FDPC is analyzed theoretically and simulated *** is shown that the distortion of polariza-tion signals can be controlled effectively by *** impairments due to disper-sion and nonlinear effects can be suppressed simultaneously.

关键词： frequency domain phase conjugation polarization dispersion nonlinear effects

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基于广度优先搜索的全芯片光源掩模优化关键图形筛选方法

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光学学报 2024年第9期44卷 131-141页

作者：杨欣华江一鹏李思坤廖陆峰张双张利斌张生睿施伟杰韦亚一王向朝中国科学院上海光学精密机械研究所高端光电装备部上海201800 中国科学院大学材料与光电研究中心北京100049 中国科学院微电子研究所EDA中心北京100029 东方晶源微电子科技(北京)有限公司北京100176 中国科学院大学集成电路学院北京100049 浙江大学光电科学与工程学院浙江杭州310058

提出一种基于广度优先搜索的全芯片光源掩模优化关键图形筛选方法。通过广度优先搜索算法得到所有图形数最少的关键图形组。以45 nm标准单元库测试图形集为例,采用商用计算光刻软件Tachyon Tflex对本文方法的筛选结果进行仿真验证。结... 详细信息

提出一种基于广度优先搜索的全芯片光源掩模优化关键图形筛选方法。通过广度优先搜索算法得到所有图形数最少的关键图形组。以45 nm标准单元库测试图形集为例,采用商用计算光刻软件Tachyon Tflex对本文方法的筛选结果进行仿真验证。结果表明,本文方法获得的关键图形组的工艺窗口优于Tachyon Tflex中的同类技术。相比于基于深度优先搜索的全芯片SMO关键图形筛选方法,本文方法只筛选出所有图形数量最少的关键图形组,图形筛选效率更高。

关键词：集成光学图形筛选计算光刻全芯片光源掩模联合优化广度优先搜索

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Knowledge and data jointly driven aeroengine gas path performance assessment method

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Chinese Journal of Aeronautics 2024年第5期37卷 533-557页

作者： Zhe wang Xuyun FU Rui ZHANG Zhengfeng BAI xiangzhao XIA Wei JIANG Department of Mechanical Engineering Harbin Institute of TechnologyWeihai 264209China Weihai Key Laboratory of Intelligent Operation and Maintenance Harbin Institute of TechnologyWeihai 264209China Control System Design Laboratory AECC ShenYang Engine Research InstituteShenyang 110015China

Aeroengines,as the sole power source for aircraft,play a vital role in ensuring flight *** gas path,which represents the fundamental pathway for airflow within an aeroengine,directly impacts the aeroengine's performance,fuel efficiency,and ***,timely and accurate evaluation of gas path performance is of paramount *** paper proposes a knowledge and data jointly driven aeroengine gas path performance assessment method,combining Fingerprint and gas path parameter deviation ***,Fingerprint is used to correct gas path parameter deviation values,eliminating parameter shifts caused by non-component performance ***,coarse errors are removed using the Romanovsky criterion for short-term data divided by an equal-length overlapping sliding ***,an Ensemble Empirical Mode Decomposition and Non-Local Means(EEMD-NLM)filtering method is designed to“clean”data noise,completing the preprocessing for gas path parameter deviation ***,based on the characteristics of gas path parameter deviation values,a Dynamic Temporary Blended Network(DTBN)model is built to extract its temporal features,cascaded with Multi-Layer Perceptron(MLP),and combined with Fingerprint to construct a Dynamic Temporary Blended AutoEncoder(DTB-AutoEncoder).Eventually,by training this improved autoencoder,the aeroengine gas path multi-component performance assessment model is formed,which can sufficiently decouple the nonlinear mapping relationship between aeroengine gas path multi-component performance degradation and gas path parameter deviation values,thereby achieving the performance assessment of engine gas path *** practical application cases,the effectiveness of this model in assessing the aeroengine gas path multi-component performance is verified.

关键词： Performance assessment Aeroengine Fingerprint Gas path parameter deviation values Jointly drive

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Aptasensing biosynthesized phosphatidylserine with a AuNPs nanozyme-based colorimetric aptasensor

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Food Science and Human Wellness 2024年第2期13卷 823-829页

作者： Sai wang Rui Ma Chengqiang Li Ling Zhang Haiyang Zhang Xuehan Li xiangzhao Mao Qingdao Key Laboratory of Food Biotechnology College of Food Science and EngineeringOcean University of ChinaQingdao 266404China Key Laboratory of Biological Processing of Aquatic Products China National Light IndustryQingdao 266404China Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology Qingdao 266237China

Sensitive monitoring of the target products during the biosynthesis process is crucial,and facile analytical approaches are urgently ***,phosphatidylserine(PS)was chosen as the model target,a colorimetric aptasensor was developed for the rapid quantitation in biosynthesis samples.A chimeric aptamer was constructed with two homogeneous original PS *** recognition between the chimeric aptamer and PS results in the desorption of aptamer from the surface of the AuNPs nanozyme,and the peroxidase-like enzymatic activity of the AuNPs nanozyme was weakened in a relationship with the different *** developed aptasensor performed well when applied for analyzing PS in biosynthesis *** aptasensor offers good sensitivity and selectivity,under optimal conditions,achieving monitoring and quantitation of PS in the range of 2.5-80.0μmol/L,with a limit of detection at 536.2 nmol/***,the aptasensor provides good accuracy,with comparison rates of 98.17%-106.40%,when compared with the *** study provides a good reference for monitoring other biosynthesized products and promoting the development of aptamers and aptasensors in real-world applications.

关键词： Phosphatidylserine Chimeric aptamer AuNPs nanozyme Colorimetric aptasensor

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Relations between skylight scattering angle and degree of polarization under different sky conditions

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Chinese Optics Letters 2010年第6期8卷 546-548页

作者：黄旭锋步扬王向朝 Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Graduate University of Chinese Academy of Sciences

The relations between scattering angle（SA） and the degree of polarization（DOP） of skylights are studied. Measurements under different sky conditions demonstrate that all relation curves between SA and DOP can be described as *** reaches its peak when SA is 90°and the sizes of scattering particles are much smaller than the wavelengths of *** peak value of DOP moves by a small drift when the size of the particle *** propose and analyze a polarization dependence model for SA and *** from simulation are in good agreement with experimental results.

关键词： Polarization Windows

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Sinusoidal phase-modulating interferometers for nanometer-accuracy measurements

Sinusoidal phase-modulating interferometers for nanometer-ac...

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第十届全国光学测试学术讨论会

作者： xiangzhao wang Shanghai Institute of Optics and Fine Mechanics Academia Sinica P.O.Box 800-211Shanghai 201800China

Among nanometer-accuracy optical interferometry,the advantage of the sinusoidal phase-modulating(SPM)interferometry is *** phase modulation of the reference wave is very *** a piezoelectric transducer is *** a LD-SPM interferometer,the phase modulat ion can be easi ly performed by modulat ion of the LD injection *** SPM interferometrv has become an effective tool to measure minute displacements,vibrations,surface profiles,angular

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Empirical model of concrete block fragment behavior under explosion loads

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Science China(Technological Sciences) 2024年第8期67卷 2515-2529页

作者： YANG Shuai NING JianGuo REN HuiLan XU xiangzhao State Key Laboratory of Explosion Science and Safety Protection Beijing Institute of TechnologyBeijing 100081China

Concrete structures undergo integral fragmentation under explosion loads. The fragmentation degree and particle-size distribution of concrete blocks under explosion loads must be considered during mining to ensure safety. In this study, the impulse is calculated based on the relationship between overpressure and time, and the impact energy of the explosion wave is obtained based on blast theory. Subsequently, the Mohr-Coulomb shear strength fracture criterion is introduced to determine the ultimate shear stress of the concrete materials, and an empirical model that can effectively calculate the energy consumption of concrete blocks under explosion loads is established. Furthermore, concrete fragments with different particle sizes under explosion scenarios are quantitatively predicted with the principle of energy conservation. Finally, explosion tests with different top standoff distances are conducted, and the concrete fragments after the explosion tests are recovered, sieved, weighed, and counted to obtain experimental data. The effectiveness of the fragment empirical model is verified by comparing the model calculation results with the experimental data. The proposed model can be used as a reference for civil blasting, protective engineering design, and explosion-damage assessment.

关键词： concrete structures explosion loads fragment behavior empirical model

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