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Efficient ultrafast laser writing with appropriate polarization

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light(Science & Applications) 2023年第6期12卷 938-940页

作者： xiujian li Wenke Xie College of Sciences National University of Defense TechnologyChangsha 410073China Tiansun National Lab Changsha 410073China School of Physics and Electronics Central South UniversityChangsha 410083China

Appropriate polarization utilization makes the electric field vector direction and the statistically oriented localized states suitable for enhancing light-matter interactions so as to improve the efficiency of ultrafast laser writing,which will remarkably reduce the pulse energy and increase the processing speed for high density optical data storage,as well as manufacturing three-dimensional integrated optics and geometric phase optical elements.

关键词： polarization laser optical

Effects of third-order dispersion on temporal soliton compression in dispersion-engineered silicon photonic crystal waveguides

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Photonics Research 2020年第5期8卷 729-736页

作者： JIAli liAO YANG GAO YANliNG SUN liN MA ZHENZHONG LU xiujian li School of Physics and Optoelectronic Engineering Xidian UniversityXi'an 710071China State Key Laboratory of Pulsed Power Laser Technology Hefei 230037China Xi’an Research Institute of High Technology Xi'an 710025China College of liberal Arts and Sciences National University of Defense TechnologyChangsha 410073China

High-order temporal soliton compression in dispersion-engineered silicon photonic crystal waveguides will play an important role in future integrated photonic circuits compatible with complementary metal–oxide–***,we report the physical mechanisms of high-order temporal soliton compression affected by third-order dispersion(TOD)combined with free carrier dispersion(FCD)in a dispersion engineered silicon photonic crystal waveguide with wideband low anomalous *** numerical temporal soliton evolution analysis,we report what we believe is the first demonstration of the dual opposite effects of TOD on temporal soliton compression,which are strengthening or weakening through two different physical mechanisms,not only depending on the sign of TOD but also the relative magnitude of TOD-induced equivalent group velocity dispersion(GVD)β2,equto the original GVDβ*** further find that FCD counteracts the effects of negative TOD on the soliton compression,while it reinforces the effects of positive TOD on the soliton *** results will help to design suitable dispersion-engineered silicon waveguides for superior on-chip temporal pulse compression in optical communications and processing application fields.

关键词： waveguides waveguide soliton

Ultra-compact titanium dioxide micro-ring resonators with sub-10-μm radius for on-chip photonics

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Photonics Research 2021年第7期9卷 1416-1422页

作者： MEICHENG FU YI ZHENG GAOYUAN li WENJUN YI JUNli QI SHAOJIE YIN xiujian li XIAOWEI GUAN Department of Physics College of Liberal Arts and SciencesNational University of Defense TechnologyChangsha 410073China DTU Fotonik Technical University of DenmarkLyngby DK-2800Denmark School of Electrical Engineering Yanshan UniversityQinhuangdao 066004China

Microring resonators (MRRs) with ultracompact footprints are preferred for enhancing the light-matter interactions to benefit various applications. Here,ultracompact titanium dioxide (TiO2) MRRs with sub-10-μm radii are experimentally demonstrated. Thanks to the large refractive index of TiO_(2),the quality factors up to -7.9×10^(4) and -4.4×10^(4)are achieved for TiO_(2) MRRs with radii of 10μm and 6μm,respectively,which result in large nonlinear power enhancement factors (>113) and large Purcell factors (>56). The four-wave mixing(FWM) measurements indicate that,compared to the large MRR,the FWM conversion efficiency of the ultracompact TiO2 MRRs can be greatly improved (e.g.,-25 dB versus-31 dB),a harbinger of significant superiorities. Demonstrations in this work provide more arguments for the TiO_(2) waveguides as a promising platform for various on-chip photonic devices.

关键词： titanium dioxide radius

Systematic error analysis and compensation for high accuracy star centroid estimation of star tracker

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Science China(Technological Sciences) 2010年第11期53卷 3145-3152页

作者： JIA Hui YANG JianKun li xiujian YANG JunCai YANG MengFei liU YiWu HAO YunCai Institute of Technique Physics Science CollegeNational University of Defense TechnologyChangsha 410037China Beijing Institute of Control Engineering National Laboratory of Space Intelligent ControlBeijing 100190China China Academy of Space Technology Beijing 100094China

Subpixel centroid estimation is the most important star image location method of star tracker. This paper presents a theoretical analysis of the systematic error of subpixel centroid estimation algorithm utilizing frequency domain analysis under the con-sideration of sampling frequency limitation and sampling window limitation. Explicit expression of systematic error of cen-troid estimation is obtained, and the dependence of systematic error on Gaussian width of star image, actual star centroid loca-tion and the number of sampling pixels is derived. A systematic error compensation algorithm for star centroid estimation is proposed based on the result of theoretical analysis. Simulation results show that after compensation, the residual systematic errors of 3-pixel-and 5-pixel-windows’ centroid estimation are less than 2×10-3 pixels and 2×10-4 pixels respectively.

关键词： star tracker star image location subpixel centroid estimation centroid algorithm frequency domain analysis systematic error compensation

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阿尔弗雷德·盖尔的艺术人类学研究

艺术设计研究 2022年第6期 118-122页

作者：李修建中国艺术研究院艺术学研究所

英国学者阿尔弗雷德·盖尔是当代西方最具原创性的艺术人类学家,《艺术与能动性》是其代表作。他秉承英国人类学界的传统,反对从美学、符号学和语言学的角度研究艺术。他认为艺术人类学研究的是艺术生产、流通和接受的社会语境。他将艺... 详细信息

英国学者阿尔弗雷德·盖尔是当代西方最具原创性的艺术人类学家,《艺术与能动性》是其代表作。他秉承英国人类学界的传统,反对从美学、符号学和语言学的角度研究艺术。他认为艺术人类学研究的是艺术生产、流通和接受的社会语境。他将艺术看成一套技术体系和行动体系,主张对艺术做传记式研究。他受皮尔斯启发,提出了艺术关系网理论,认为艺术人类学的任务就是描述和解释艺术关系网。盖尔的理论不仅在艺术人类学界产生巨大影响,还深刻影响了艺术史研究,为艺术研究提供了一种新的方法论。

关键词：阿尔弗雷德·盖尔《艺术与能动性》艺术关系网指示符

从艺术到文化——理查德·L.安德森《艺术人类学导论》导读

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民族艺术 2023年第1期170卷 159-168页

作者：庄振富李修建中国艺术研究院研究生院中国艺术研究院艺术学研究所

理查德·L.安德森的《艺术人类学导论》(1)是一部材料丰富、理论视野宽广的著作,是跨文化研究的典范。该书以西方社会为参照,主要就文化发展相对简单的小型社会的艺术展开分析与论证。与偏重艺术的视觉形式不同,艺术的文化意义一面更加... 详细信息

理查德·L.安德森的《艺术人类学导论》(1)是一部材料丰富、理论视野宽广的著作,是跨文化研究的典范。该书以西方社会为参照,主要就文化发展相对简单的小型社会的艺术展开分析与论证。与偏重艺术的视觉形式不同,艺术的文化意义一面更加吸引作者的眼光。作者以艺术为核心和出发点,分别论述其社会功能、象征意义和风格变迁等问题,进而探讨艺术制作者的生活与训练、想象力与审美心理等话题,最后从跨文化比较的角度对比西方艺术与非西方艺术的异同点。该书旁征博引,叙述翔实,视域敞亮,是一部很有价值的艺术人类学著作。

关键词：理查德·L.安德森《艺术人类学导论》小型社会跨文化比较艺术人类学

Concise and efficient direct-view generation of arbitrary cylindrical vector beams by a vortex half-wave plate

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Photonics Research 2021年第5期9卷 803-813页

作者： JUNli QI WEIHUA WANG BO SHI HUI ZHANG YANAN SHEN HAIFEI DENG WENJING PU XIN liU HUIHUI SHAN XIAOMIN MA liANQIANG ZHANG WEI LU MEICHENG FU xiujian li Institute of Plasma Physics Hefei Institutes of Physical SciencesChinese Academy of SciencesHefei 230031China Science Island Branch of Graduate School University of Science and Technology of ChinaHefei 230031China College of liberal Arts and Sciences National University of Defense TechnologyChangsha 410073China Institute of Applied Physics Army Academy of Artillery and Air DefenseHefei 230031China Institute of Physical Science and Information Technology Anhui UniversityHefei 230031China

A concise, efficient, and practical direct-view scheme is presented to generate arbitrary cylindrical vector(CV)beams, including CV beams, vortex beams, and cylindrical vector vortex(CVV) beams, by a vortex half-wave plate(VHP). Six kinds of first-order and other high-order CV beams, such as azimuthally polarized(AP) beams, antivortex radial polarization mode beams, and three-order AP beams, are formed by simply rotating a half-wave plate. The Stokes parameters and double-slit interference of multitype CV beams are investigated in *** polarization parameters, including degree of polarization, polarization azimuth, and ellipticity, are obtained,which demonstrates the efficient generation of CV beams. In addition, the double-slit interference experiment is introduced in the setup, and fringe misplacement and tilt appear for CVV beams, in which the misplacement number M is 2P+1 for P ≤ 2 and 2P-1 for P ≥ 3, where P is the polarization order number, and the fringe tilt offset is positively related to the topological charge number l of CVV beams. In addition, new types of VHPs can be formed by cascading two or more VHPs when the types of available VHPs are limited, assisting in more flexible generation of multitype CV beams. It is experimentally demonstrated that arbitrary CV beams with high quality are effectively achieved by the proposed setup, and the double-slit interference method can be utilized to determine and analyze CV beams rapidly and concisely by practical performance, which shows the potential to be implemented as a commercial device.

关键词： vortex arbitrary cylindrical

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艺术人类学的经典译介与学科建构

艺术评论 2022年第7期 150-160页

作者：李修建中国艺术研究院艺术学研究所

国内的艺术人类学研究仍处于学科建构阶段,需要积极参考国外相关成果,因而译介工作非常重要。“艺术人类学经典译丛”遴选西方艺术人类学史上的经典著述进行翻译,规划10种,目前已出版4种,即莱昂哈德·亚当的《原始艺术》、罗伯特·莱顿... 详细信息

国内的艺术人类学研究仍处于学科建构阶段,需要积极参考国外相关成果,因而译介工作非常重要。“艺术人类学经典译丛”遴选西方艺术人类学史上的经典著述进行翻译,规划10种,目前已出版4种,即莱昂哈德·亚当的《原始艺术》、罗伯特·莱顿的《艺术人类学》、范丹姆的《审美人类学》以及李修建编选的《国外艺术人类学读本》。这四部著作皆为名家名作,集中于艺术人类学基础理论的探讨,很好地推动了艺术人类学的学科建构,对于国内相关研究具有颇高的参考价值。

关键词：《原始艺术》《艺术人类学》《审美人类学》《国外艺术人类学读本》学科建构

西方艺术人类学的成熟之作——罗伯特·莱顿《艺术人类学》导读

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贵州大学学报（艺术版） 2023年第1期37卷 13-18页

作者：李修建中国艺术研究院艺术学研究所北京100029

英国人类学家罗伯特·莱顿的《艺术人类学》,是西方第一部以“艺术人类学”为名的学术专著。书中广泛借鉴了20世纪60—80年代西方人类学界的研究成果,吸收了功能主义、结构主义、符号学等理论成果,形成了艺术的本质、艺术与社会生活、... 详细信息

英国人类学家罗伯特·莱顿的《艺术人类学》,是西方第一部以“艺术人类学”为名的学术专著。书中广泛借鉴了20世纪60—80年代西方人类学界的研究成果,吸收了功能主义、结构主义、符号学等理论成果,形成了艺术的本质、艺术与社会生活、艺术与视觉交流、风格、艺术家的研究框架。本书既提供了大量田野资料,又不无理论的反思,是西方艺术人类学史上的一部成熟之作,至今仍有重要的学术影响。

关键词：《艺术人类学》莱顿结构主义风格艺术家

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