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Second harmonic generation of laser beams in transverse mode locking states

Advanced Photonics 2022年第2期4卷 68-77页

作者： Zilong Zhang Yuan Gao Xiangjia Li Xin Wang suyi zhao Qiang Liu Changming zhao Beijing Institute of Technology School of Optics and PhotonicsBeijingChina Ministry of Education Key Laboratory of Photoelectronic Imaging Technology and SystemBeijingChina Ministry of Industry and Information Technology Key Laboratory of Photonics Information TechnologyBeijingChina Arizona State University School for Engineering of MatterTransport and EnergyDepartment of Aerospace and Mechanical EngineeringTempeArizonaUnited States Ministry of Education Key Laboratory of Photonic Control Technology(Tsinghua University)BeijingChina Tsinghua University Department of Precision InstrumentState Key Laboratory of Precision Measurement Technology and InstrumentsBeijingChina

Nonlinear frequency conversion of structured beams has been of great interest *** present an intracavity second harmonic generation(SHG)of laser beams in transverse mode locking(TML)states with a specially designed sandwich such as a microchip *** intracavity nonlinear frequency conversion process of a laser beam in a TML state to its second harmonic is theoretically and experimentally investigated,considering different relative phase and weight parameters between the basic modes in the TML *** between the far-field SHG beam patterns of fundamental frequency transverse modes in coherently locked and incoherently superposed states demonstrates that the SHG of TML beams can carry more *** rarely observed far-field SHG beam patterns are obtained,and they are consistent with the theoretical analysis and numerical *** the obtained SHG beams,the characteristics of the structured fundamental frequency beams can also be conversely investigated or *** work may have important applications in optical 3D printing,optical trapping of particles,and free-space optical communication areas.

关键词： transverse mode locking optical vortex lattice structured beams second harmonic generation

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螺旋微孔阵列对涡旋光束的调制机理研究

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光学学报 2022年第2期42卷 227-233页

作者：高原张子龙田顺赵苏怡赵长明北京理工大学光电学院北京100081 光电成像技术与系统教育部重点实验室北京100081 信息光子技术工业与信息化部重点实验室北京100081

从理论和实验上研究涡旋光束通过具有费马螺线分布微孔结构的衍射板后拓扑荷数的变化情况,以及光束强度分布的衍射和聚焦特性。利用一个正透镜对衍射光束进行聚焦,观察和研究聚焦光束在焦平面后一定范围内的光强分布变化情况。衍射光束... 详细信息

从理论和实验上研究涡旋光束通过具有费马螺线分布微孔结构的衍射板后拓扑荷数的变化情况,以及光束强度分布的衍射和聚焦特性。利用一个正透镜对衍射光束进行聚焦,观察和研究聚焦光束在焦平面后一定范围内的光强分布变化情况。衍射光束的最内环光强分布在束腰前后约有五个变化阶段。这一变化趋势适用于涡旋光束通过微孔沿不同费马螺线分布的衍射板的情况,无论是螺线旋转方向的改变,还是螺线结构数目的改变。通过衍射光束与球面波的干涉来验证拓扑荷数的变化规律。结果表明,这种衍射可以产生新的拓扑荷数,其变化与入射涡旋光束的相位波前和螺旋微孔阵列的相对旋向有关。

关键词：物理光学涡旋光束拓扑荷调制衍射螺旋微孔阵列

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《诗经》英译本的译者风格比较——以亚瑟·韦利及许渊冲版本为例

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黑河学院学报 2023年第5期14卷 123-126页

作者：赵苏怡安徽三联学院外语学院安徽合肥230601

《诗经》是中国诗歌之源头,在中国文学史上具有崇高的地位,其英译史已逾百年,但对译者风格研究甚少。从文化翻译的视角出发,比较《诗经》的两个英译本译者风格在音韵、意象、句子、编排方式存在着异同,各有特色,各有优劣,通过对比拓展... 详细信息

《诗经》是中国诗歌之源头,在中国文学史上具有崇高的地位,其英译史已逾百年,但对译者风格研究甚少。从文化翻译的视角出发,比较《诗经》的两个英译本译者风格在音韵、意象、句子、编排方式存在着异同,各有特色,各有优劣,通过对比拓展《诗经》英译的研究空间与翻译方法。

关键词：《诗经》英译译者风格亚瑟·韦利许渊冲

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Evolution on spatial patterns of structured laser beams:from spontaneous organization to multiple transformations

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Advanced Photonics Nexus 2023年第2期2卷 1-22页

作者： Xin Wang Zilong Zhang Xing Fu Adnan Khan suyi zhao Yuan Gao Yuchen Jie Wei He Xiaotian Li Qiang Liu Changming zhao Beijing Institute of Technology School of Optics and PhotonicsBeijingChina Ministry of Education Key Laboratory of Photoelectronic Imaging Technology and SystemBeijingChina Ministry of Industry and Information Technology Key Laboratory of Photonics Information TechnologyBeijingChina Tsinghua University Ministry of EducationKey Laboratory of Photonic Control TechnologyBeijingChina Tsinghua University State Key Laboratory of Precision Measurement Technology and InstrumentsDepartment of Precision InstrumentBeijingChina Nankai University School of PhysicsKey Laboratory of Weak Light Nonlinear PhotonicsTianjinChina

Spatial patterns are a significant characteristic of *** knowledge of spatial patterns of structured laser beams is rapidly expanding,along with the progress of studies on laser physics and tech*** in the last decades,owing to the in-depth attention on structured light with multiple degrees of freedom,the research on spatial and spatiotemporal structures of laser beams has been promptly *** beams have hatched various breakthroughs in many fields,including imaging,microscopy,metrology,communication,optical trapping,and quantum information ***,we would like to provide an overview of the extensive research on several areas relevant to spatial patterns of structured laser beams,from spontaneous organization to multiple *** include the early theory of beam pattern formation based on the Maxwell–Bloch equations,the recent eigenmodes superposition theory based on the time-averaged Helmholtz equations,the beam patterns extension of ultrafast lasers to the spatiotemporal beam structures,and the structural transformations in the nonlinear frequency conversion process of structured beams.

关键词： spatial patterns transverse modes spatiotemporal beams structured laser beams nonlinear optics

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Combustion Characteristic and Mechanism of a Mixture Working Fluid C_(3)H_(8)/CO_(2)

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Journal of Thermal Science 2021年第5期30卷 1768-1779页

作者： SHI Weixiu PAN Lisheng JIN suyi DONG Yuehua LI Teng zhao Jing WEI Xiaolin Beijing Engineering Research Center of Sustainable Energy and Buildings Beijing University of Civil Engineering and ArchitectureBeijing100044China State Key Laboratory of High-temperature Gas Dynamics Institute of MechanicsChinese Academy of SciencesBeijing100190China School of Engineering Sciences University of Chinese Academy of SciencesBeijing100049China

In the CO_(2)transcritical power cycle,conventional cooling water can hardly condense subcritical CO_(2)because its critical temperature is as low as 30.98°*** order to avoid this condensing problem,CO_(2)-based mixtures have been proposed as working fluids for transcritical power *** can raise the critical temperature by mixing a little C_(3)H_(8)as the secondary component to CO_(2).However,the flammability of the mixture may limit its *** article investigated laminar flame speed of C_(3)H_(8)/CO_(2)which represents the mixture’s combustion characteristic by a so-called heat flux method and studied the inhibition mechanism of CO_(2)on the combustion based on the Premixed Laminar Flame-Speed Calculation reactor of *** experimental results showed that the laminar flame speed shows a peak value with changing the equivalence ratio and accelerates with raising the mole fraction of the organic ***,a slight upwards trend was observed for the corresponding equivalence ratio of the *** flammable range for the equivalence ratio extended with the mole fraction of C_(3)H_(8)*** the mole fraction of C_(3)H_(8)of 0.15,the maximum laminar flame speed was 12.8 cm/s,31.7%of that of the pure C_(3)H_(8).The flammable range was from 0.41 to 1.33,decreasing by 23.3%compared with that of C_(3)H_(8).A flammable critical mixing ratio was also found as 0.08/0.92 for C_(3)H_(8)/CO_(2)at the normal *** simulating,it was found that the most key free radical and elementary reaction which determine the inhibition of CO_(2)on the combustion are OH and H+O_(2)=O+OH,respectively.

关键词： CO_(2)-based mixture flammability laminar flame speed flammable critical mixing ratio transcritical power cycle

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Modulating redox transition kinetics by anion regulation in Ni-Fe-X(X=O,S,Se,N,and P)electrocatalyst for efficient water oxidation

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Nano Research 2024年第6期17卷 4720-4728页

作者： Liting Wei Kaini Zhang Rui zhao Lei Zhang Yan Zhang suyi Yang Jinzhan Su International Research Center for Renewable Energy&State Key Laboratory of Multiphase Flow in Power Engineering Xi’an Jiaotong UniversityXi’an 710049China Department of Applied Chemistry Yuncheng UniversityYuncheng 044000China

NiFe-based electrocatalysts will experience dynamical surface reconstruction during oxygen evolution reaction(OER)process,and the derived metal(oxy)hydroxide hybrids on the surface have been considered as the actual active species for *** efforts have been dedicated to understanding the surface reconstruction,but there is rare research on recognizing the origin of improved performance derived from anion species of ***,the OER electrocatalytic characteristics were tuned with different anions in NiFe-based catalyst,using NiFe-based oxides/nitride/sulfide/selenides/phosphides(NiFeX,X=O,N,S,Se,and P)as the model *** combination of X-ray photoelectronic spectroscopy,electrochemical tests,operando spectroscopic characterizations,and density functional theory(DFT)calculations,reveals that anion with lower electronegativity in NiFe-based catalyst leads to higher conductivity and delayed valence transition of Ni sites,as well as optimized adsorption behavior towards oxygen intermediates,contributing to enhanced OER ***,NiFeP electrocatalyst demonstrates an ultralow overpotential of 265 mV at 20 mA·cm−2 for OER,as well as long-term *** work not only offers further insights into the effect of anionic electronegativity on the intrinsic OER electrocatalytic properties of NiFe-based electrocatalyst but also provides guide to design efficient non-noble metal-based electrocatalysts for water oxidation.

关键词： oxygen evolution reaction(OER) anion species electronegativity valence transition

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Synthesis,structure and properties of three novel transition-metal-containing tantalum-phosphate clusters

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Chinese Chemical Letters 2022年第10期33卷 4675-4678页

作者： Xue Li Hui zhao Yuyan Li Yuanyuan Yang Mingyang Zhang suyi Liu Pengtao Ma Jingping Wang Jingyang Niu Henan Key Laboratory of Polyxometalate Chemistry College of Chemistry and Chemical EngineeringHenan UniversityKaifeng 475004China

Peroxide ligation of aqueous metal-oxo clusters provides rich speciation and structural ***,three novel transition-metal derivatives of polyoxometalate anions,[Ni_(2)(H_(2)O)_(10){P_(4)Ta_(6)(O_(2))_(6)O_(24)}]^(6-)(1a),[Zn(H_(2)O)_(4){P_(4)Ta_(6)(O_(2))_(6)O_(24)}]^(8-)(2a)and[Cd(H_(2)O)_(4){P_(4)Ta_(6)(O_(2))_(6)O_(24)}]^(8-)(3a),have been successfully synthesized by adopting a one-pot reaction *** of these hexatantalates are built from a new-type phosphorus-incorporated *** investigated the solution behaviors,and the peak assignments of the MS spectra indicated some degree of stability of them in ***,the proton-conducting ability of compound 1a was also explored and it has shown well conductivity at high relative humidities,with conductivity achieved 1.22×10^(-3) S/cm(85℃,90%RH).

关键词： Polyoxotantalates Transition-metal Synthesize Structure Proton-conduction

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Distance decay pattern of fermented-related microorganisms in the sauce-flavor Baijiu producing region

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Food Bioscience 2023年第1期51卷 797-807页

作者： Shuangping Liu Zhengfei Jiang Dongna Ma Xiaogang Liu Yilun Li Dongliang Ren Ying Zhu Hongyuan zhao Hui Qin Mengyang Huang suyi Zhang Jian Mao National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing State Key Laboratory of Food Science and TechnologySchool of Food Science and TechnologyJiangnan UniversityWuxiJiangsu214122China Luzhou Laojiao Group Co.Ltd Luzhou646000China Shaoxing Key Laboratory of Traditional Fermentation Food and Human Health Jiangnan University(Shaoxing)Industrial Technology Research InstituteShaoxingZhejiang312000China National Engineering Research Center of Huangjiu Zhejiang Guyuelongshan Shaoxing Wine Co.Ltd.ShaoxingZhejiang312000China Jiangsu Provincial Engineering Research Center for Bioactive Product Processing Jiangnan UniversityWuxiJiangsu214122China

Microbial terroir is essential to the development of regional fermented food *** microbiota participates in the fermentation process and fermentation process also domesticates the microorganisms in the environments,leading to an interaction between the fermentation process and the fermentation ***,we reported microbiota from different environments(fermentation process,fermentation environment,and ecological environment)of two *** used amplicon full-length sequencing to study the regional microbial characteristics and the domestication of the fermentation process on *** in the Chishui River producing region contributed more to the brewing,which contained many functional fungi,such as Pichia,Wickerhamomyces anomalus,and *** fermentation process had a strong domestication effect on microbiota in the fermentation *** grains and Daqu were the primary microbiota sources in the fermentation *** in the producing area exhibited a distance decay *** increasing distance from the distillery,the dissimilarity between microbial communities increased and the microbial community showed an obvious deterministic-stochastic *** ecological environment 50m away from the distillery was less domesticated by the fermentation *** factors(pH,acidity,and water content)and microbial interactions synergistically led to microbial differences across *** results first determined that a regional microbial model had been established in sauce-flavor Baijiu and comprehensively clarified the interaction between the fermentation process and the *** laid the foundation for further elucidation of the influence of microorganisms on the yield and flavor quality of sauce-flavor Baijiu.

关键词： Sauce-flavor Baijiu Environmental microbiota Distance decay patterns Domestication

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外耳道胆脂瘤18例

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临床耳鼻咽喉头颈外科杂志 2007年第16期21卷 746-747页

作者：刘海兵赵荣曾甦漪成都铁路中心医院耳鼻咽喉科成都610081

目的：提高临床对外耳道胆脂瘤（EACC）的认识。方法：回顾性分析经病理确诊的18例EACC的临床资料。结果：根据病变的范围和程度,采取不同的治疗方法,外耳道病变范围小,骨质破坏轻者6例,EACC侵入上鼓室和乳突腔的8例。经手术治疗,随访10... 详细信息

目的：提高临床对外耳道胆脂瘤（EACC）的认识。方法：回顾性分析经病理确诊的18例EACC的临床资料。结果：根据病变的范围和程度,采取不同的治疗方法,外耳道病变范围小,骨质破坏轻者6例,EACC侵入上鼓室和乳突腔的8例。经手术治疗,随访10-40个月,无复发迹象。结论：EACC以中老年患者居多。仔细询问病史,查体及颞骨CT检查在该病诊断中十分重要。EACC可能发展成广泛性的乳突破坏,治疗原则是根据病变程度决定手术方式尽早彻底清除胆脂瘤和死骨,促进创面愈合。

关键词：耳道胆脂瘤乳突外科手术

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指纹图谱在白酒分析及质量控制中的应用

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中国酿造 2011年第11期30卷 17-20页

作者：祝成张宿义赵金松四川理工学院四川自贡643000 泸州老窖股份有限公司四川泸州646000

指纹图谱作为一种分析天然产物的有效手段,近期发展迅速。该文介绍了指纹图谱的概念,白酒指纹图谱的构建,白酒指纹图谱的获取技术和解析方法。并从各方面指出了目前指纹图谱在白酒应用上存在的问题,对未来指纹图谱在白酒研究上的发展趋... 详细信息

指纹图谱作为一种分析天然产物的有效手段,近期发展迅速。该文介绍了指纹图谱的概念,白酒指纹图谱的构建,白酒指纹图谱的获取技术和解析方法。并从各方面指出了目前指纹图谱在白酒应用上存在的问题,对未来指纹图谱在白酒研究上的发展趋势作出展望。

关键词：白酒指纹图谱构建解析

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