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SSRN 2023年

作者： Dong, Na Jiang, Guojian Wu, Dandan Ma, Weidan School of Materials Science and Engineering Shanghai Institute of Technology Shanghai201418 China State Key Laboratory of Advanced Refractory Materials Luoyang471039 China State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and Technology Hubei430081 China Infrared and Low Temperature Plasma Key Laboratory of Anhui Province College of Electronic Countermeasures NUDT Hefei230037 China State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology Harbin150090 China State Key Laboratory of Crystal Materials Shandong University Shandong Jinan250100 China State Key Laboratory of Mineral Processing Beijing102628 China

Using TaCl5, Y(NO3)3·6H2O as raw materials with ammonium hydroxide as precipitator, the mixed sols of yttrium tantalum hydroxide were formed by coprecipitation method, which were treated under 35 Pa through vacuum freeze-drying method (VFD) at minus 60 degrees Celsius to form the precursor powder, followed by the heat treatment at high temperature. The effects of treatment temperature and precipitator concentration on phase transition, morphology and particle size distribution of YTaO4 powder were studied. The results indicated that the submicron YTaO4 precursor powder with small particle size and concentrated distribution could be fabricated through coprecipitation and vacuum freeze-drying method (CPVFD). YTaO4 with uniform dispersion and high purity could be achieved at a precipitant concentration of 13 wt.% and a calcination temperature of 1100 ℃. © 2023, The Authors. All rights reserved.

关键词： Thermoanalysis

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Nonequilibrium carrier and phonon dynamics in the ferrimagnetic semiconductor Mn3Si2Te6

arXiv

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arXiv 2024年

作者： Yang, Y. Chen, X.T. Li, Z.L. Pan, J.B. Jing, F. Zhang, S.S. Wang, X.B. Luo, J.L. Key Laboratory of Education Ministry for Laser and Infrared System Integration Technology Shandong University Qingdao266237 China Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing100190 China School of Information Science and Engineering Shandong University Qingdao266237 China

We investigate the ultrafast carrier and phonon dynamics in the ferrimagnetic semiconductor Mn3Si2Te6 using time-resolved optical pump-probe spectroscopy. Our results reveal that the electron-phonon thermalization process with a subpicosecond timescale is prolonged by the hot-phonon bottleneck effect. We identify the subsequent relaxation processes associated with two non-radiative recombination mechanisms, i.e., phonon-assisted electron-hole recombination and defect-related Shockley-Read-Hall recombination. Temperature-dependent measurements indicate that all three relaxation components show large variation around 175 and 78 K, which is related to the initiation of spin fluctuation and ferrimagnetic order in Mn3Si2Te6. In addition, two pronounced coherent optical phonons are observed, in which the phonon with a frequency of 3.7 THz is attributed to the A1g mode of Te precipitates. Applying the strain pulse propagation model to the coherent acoustic phonons yields a penetration depth of 506 nm and a sound speed of 2.42 km/s in Mn3Si2Te6. Our results develop understanding of the nonequilibrium properties of the ferrimagnetic semiconductor Mn3Si2Te6, and also shed light on its potential applications in optoelectronic and spintronic devices. Copyright © 2024, The Authors. All rights reserved.

关键词： Phonons

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Optical Waveguide in Thermally Developed Photo-Thermo-Refractive Glass Substrate 9

Optical Waveguide in Thermally Developed Photo-Thermo-Refrac...

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9th Symposium on Novel Photoelectronic Detection technology and Applications

作者： Hao, Yinlei Guo, Xiao Peng, Xiao Wu, Haoze Wang, Shiyong Meng, Haoran Liu, Xinyue Chen, Xinyang College of Information Science & Electronic Engineering Zhejiang University Hangzhou310027 China Key Laboratory of Infrared System Detection and Imaging Technology Chinese Academy of Sciences Shanghai200083 China Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun130033 China Shenzhen Institute of Zhejiang University Shenzhen518057 China Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai200030 China

ISBN: (纸本)9781510664432

Photo-thermo-refractive (PTR) glasses are a new category of materials that possess special characteristics of refractive index decrement induced by UV exposure and subsequent thermal development. PTR glasses have been extensively utilized for the fabrication of various volume Bragg grating, and are expected to play an important role in the construction of high-performance guided-wave devices. Investigations on the optical waveguide fabrication process in thermally developed PTR glass Substrate are demonstrated. Optical grade PTR glass of the SiO2-Al2O3-Na2O-ZnO-NaFKBr system and doped with Ce, Ag, Sb, and Sn, is firstly melted, and then glass wafers made of the homemade PTR glass are UV exposed and thermal developed, during which nanometer-sized NaF crystalline is formed in these PTR glass wafers. The thermally developed PTR glass wafers are finally subjected to conventional glass-based optical waveguide melt salt thermal Ag+/Na+ ion exchange and subsequently field-assisted ion diffusion for waveguide fabrication. Results exhibited that buried channel optical waveguide, with Ag+ doped waveguide core dimension of approximately 9.5μm×8.6μm buried 5.2μm under the substrate surface can be obtained by the current procedure. In the current paper, the feasibility of implementing buried waveguide fabrication in thermally developed PTR glass materials is experimentally demonstrated. Since the shape and dimension of the waveguide core is well matched to that of single-mode fiber, and the buried waveguide eliminates scattering loss at the glass substrate surface, the buried optical waveguide is expected to find applications in guided-wave device fabrication. © 2023 SPIE.

关键词： Ion exchange

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Photonic lattice-like waveguides in glass directly written by femtosecond laser for on-chip mode conversion

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Chinese Optics Letters 2022年第3期20卷 57-61页

作者： Yuying Wang Lijing Zhong Zhi Chen Dezhi Tan Zaijin Fang Yi Yang Shengzhi Sun Luyun Yang jianrong Qiu Ningbo Femto&Nano Laser Technology Co. Ltd.Ningbo 315000China Zhejiang Lab Hangzhou 311100China Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications Institute of Photonics TechnologyJinan UniversityGuangzhou 511443China State Key Laboratory of Modern Optical Instrumentation College of Optical Science and EngineeringZhejiang UniversityHangzhou 310027China Laboratory of Infrared Materials and Devices The Research Institute of Advanced TechnologiesNingbo UniversityNingbo 315211China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China

We report on a conceptually new type of waveguide in glass by femtosecond laser direct writing,namely,photonic latticelike waveguide(PLLW).The PLLWfs core consists of well-distributed and densified tracks with a sub-micron size of 0.62μm in ***,a PLLW inscribed as hexagonal-shape input with a ring-shape output side was implemented to converse Gaussian mode to doughnut-like mode,and high conversion efficiency was obtained with a low insertion loss of 1.65 dB at 976 *** work provides a new freedom for design and fabrication of the refractive index profile of waveguides with sub-micron resolution and broadens the functionalities and application scenarios of femtosecond laser direct-writing waveguides in future 3D integrated photonic systems.

关键词： femtosecond laser glass material laser direct-writing waveguide light mode conversion

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Optical Waveguide Manufactured in Photo-Thermo-Refractive Glass Substrate by Ion Exchange 2

Optical Waveguide Manufactured in Photo-Thermo-Refractive Gl...

引用

Advanced Optical Manufacturing Technologies and Applications 2022, AOMTA 2022 and 2nd International Forum of Young Scientists on Advanced Optical Manufacturing, YSAOM 2022

作者： Hao, Yinlei Wu, Haoze Guo, Xiao Peng, Xiao Wang, Shiyong Meng, Haoran Liu, Xinyue Chen, Xinyang College of Information Science & Electronic Engineering Zhejiang University Hangzhou310027 China Key Laboratory of Infrared System Detection and Imaging Technology Chinese Academy of Sciences Shanghai200083 China Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun130033 China Shenzhen Institute Zhejiang University Shenzhen518057 China Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai200030 China

ISBN: (纸本)9781510661264

Photo-thermo-refractive (PTR) glasses exhibit promising characteristics for volume Bragg grating fabrication, one of key devices for construction of high performance lasers, among other optical device and systems. Aiming at employing this type of glass materials in the field of integrated photonics, buried optical channel waveguide is manufactured in PTR glass substrate by Ag+/Na+ thermal ion exchange and subsequent field assisted ion migration. The Ag+ doped zone in glass substrate, which is also the waveguide core, can be driven to several micrometers under the glass substrate surface, which decreases the propagation loss to a value as low as 0.12dB/cm, by eliminate scattering loss at glass substrate defects. Cross section of the waveguide core can be also engineered to match the core of single mode fiber, ensures a low coupling loss to single mode fiber. Analysis demonstrated that the buried optical waveguide fabrication proves can be expected to be applied in functional integrated optical device implementation. © 2023 SPIE.

关键词： Ion exchange

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Design and Simulation Experiment of a New Magnetron Sputtering Cathode Surface Magnetic Field Structure

Design and Simulation Experiment of a New Magnetron Sputteri...

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China International Electrical and Energy Conference (CIEEC)

作者： Wang Junnru Wang Yongke Yaowei Yu Chen Zongsheng Li Zhigang Wang Yahui Lv Xiangyin Peng Jiao State Key Laboratory of Pulsed Power Laser Technology College of Electronic Engineering National University of Defense Technology Hefei China Anhui Provincial Laboratory of Advanced Laser Technology College of Electronic Engineering National University of Defense Technology Hefei China Infrared and Low Temperature Plasma Key Laboratory of Anhui Province College of Electronic Engineering National University of Defense Technology Hefei China Chinese Academy of Sciences Institute of Plasma Physics Hefei Institutes of Physical Science Hefei China West Anhui University Lu'an China

ISBN: (数字)9798350359558

ISBN: (纸本)9798350359565

Magnetron sputtering is widely used in the field of material surface modification of low-temperature plasma, in which the magnetic field design of the cathode directly affects the quality of film formation and process cost. In order to optimize the magnetic field of the existing magnetron sputtering target, a structure with alternate distribution of internal and external magnetic yokes and permanent magnets is designed, and the finite element simulation experiment is carried out by using the method of parameter control variables. By studying the influence of magnetic circuit structure parameters on the magnetic field strength and distribution uniformity of the target surface, the parameters of key components such as permanent magnets and magnetic yokes were optimized and determined. The simulation results show that with the design structure of the cathode, the uniformity of the horizontal magnetic induction intensity on the surface of the cathode is 49.4% and the target utilization rate is 50.3%, which effectively improves the magnetic field uniformity and target utilization.

关键词： Magnetic films Simulation Low-temperature plasmas Permanent magnets Finite element analysis Magnetic fields Magnetic circuits

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Effect of Trace-Oxide on H-Se Impurity in Se-Based Chalcogenide Glasses

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Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society 2022年第4期50卷 943-949页

作者： Wang, Yuze Wang, Jun Jiao, Kai Liang, Xiaolin Sun, Weilu Bai, Shengchuang Zhao, Zheming Dai, Shixun Wang, Xunsi Laboratory of Infrared Materials and Devices Research Institute of Advanced Technology College of Information Ningbo University Ningbo315211 China College of Data Science Jiaxing University Jiaxing314001 China Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province Ningbo315211 China

Chalcogenide glasses can be melted in a completely oxygen-free environment, but the effect of trace amount of oxygen on the specific properties of chalcogenide glasses is still a challenge. To investigate the effect of trace-oxide components of Se-H impurities in As-Se glass system, SeO2 and Ge were introduced for H and O impurities in the multi-processes of dynamic-vacuum distillation. The results indicate that the co-doping of SeO2 (i.e., 2×10-3) can lead to the decrease of Se-H content in As2Se3 bulk glasses, although As-Oand Se-O impurities increase. When the content of SeO2 increases to 10-2, the absorbing intensities of As-Oand Se-O impurities increase. For the preparation of Ge-As-Se glass with low Se-H impurities, the more content of SeO2 is needed. The introduction of Ge can weaken the efficiency of SeO2 for eliminating Se-H impurities. If the Se-H impurities decrease to beyond a detecting limit of the FTIR in Ge-As-Se glasses, the more content of SeO2 is needed for the compensation. This work provides a method for further clarifying the sources of impurities in chalcogenide glasses and the preparation of low-hydroxy chalcogenide glass fibers. © 2022, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.

关键词： Oxygen

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Correction to: 2D ReS 2 /3D Bi 2 O 2 Se Homo-Heterojunction Photodetector Toward Near-infrared Polarization Sensitive Detection and High Sensitivity Communication (Laser & Photonics Reviews, 10.1002/lpor.202500577)

引用

Laser and Photonics Reviews 2025年

作者： Gou, Jun Yang, Xiutao Yu, Hang Yu, He Wei, Yuchao Fu, Ziyi Wei, Laijiang Wang, Zexu Han, Jiayue Wu, Zhiming Jiang, Yadong Wang, Jun School of Optoelectronic Science and Engineering University of Electronic Science and Technology of China Chengdu610054 China State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Chengdu610054 China Aviation Key Laboratory of Science and Technology on Infrared Detector Luoyang471099 China Tianfu Jiangxi Laboratory Chengdu641419 China

We regret that, recently, one error was found in the article. In the initially published version of the article, the text annotations in Figure 4C and its corresponding mentions in the main text use incorrect descriptions. The revised version of the corresponding description is presented below. In light of this, we propose the capacity of a polarization-sensitive photodetector to facilitate secure communication through the encoding of information within polarization states (see Figure 4C). The digital message "1 011 001" is divided into individual bits. Each bit is subsequently associated with a specific polarization state, utilizing the pre-established encryption key (Bit 0: Horizontal linear polarization (0°);Bit 1: Vertical linear polarization (90°)). The Polarization Modulator is responsible for dynamically altering the laser's polarization state in accordance with the encryption key. The polarization-sensitive photodetector subsequently measures the polarization state of the incoming light. For each bit, it determines whether the light is horizontally linear polarized (0°) or vertically linear polarized (90°). The corrections do not affect any of the conclusions of this article. We apologize for any inconvenience caused. We would like to correct the errors and provide the corrected image below. We apologize for the careless errors. The corrected Figure 4C and updated Figure 4 is shown as follows. Figure 4. Conceptualization of ReS2/Bi2O2Se for polarization imaging and telecommunications applications. A) Assessment of the device's measurement stability. B) Overview of the polarization imaging concept. C) Proposed polarization-based encrypted communication system. D) Schematic representation of the telecommunication system. E) Design of the signal and F) Experimental signal output result. © 2025 Wiley-VCH GmbH.

关键词：

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A printable metallic ink containing biphasic alloys for highly-reliable stretchable circuits

A printable metallic ink containing biphasic alloys for high...

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International Symposium on Physical & Failure Analysis of Integrated Circuits

作者： Zhe Yu Yiwen Luo Junhao Shen Xin Gao Jie Shang Xing Wu In Situ Devices Center School of Integrated Circuits East China Normal University Shanghai China CAS Key Laboratory of Magnetic Materials and Devices Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo China Faculty of Chemical Engineering Kunming University of Science and Technology Kunming China State Key Laboratory of Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai China

ISBN: (数字)9798350360608

ISBN: (纸本)9798350360615

Liquid metals are ideal materials for fabricating stretchable circuits in wearable devices, becoming printable metallic inks with high conductivity by blending with solid nanoparticles. However, challenges related to reliability arise, including variation of printing patterns, and electrical damage during repeated stretching. Here, we report a novel metallic ink containing biphasic alloys, obtained by annealing the liquid metal-based mixture. The solid-phasic alloy adheres to the surface of nanoparticles, creating an anchoring effect with liquid-phasic alloy to enhance the reliability of stretchable circuits based on this novel printable metallic ink.

关键词： Nanoparticles Liquids Deformation Circuits Metals Surface morphology Ink

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Glass Forming Region and Er3+ 2.7 Μm Emission Properties of Al2o3-Cao-Sro infrared Glass

SSRN

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SSRN 2024年

作者： Liu, Yin Wan, Jie Xiao, Yongbao Yu, Dechao College of Metallurgy and Materials Engineering Chongqing University of Science and Technology Chongqing401331 China Laboratory of Infrared Materials and Devices Advanced Technology Research Institute Ningbo University Ningbo315211 China State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques Institute of Optical Communication Materials South China University of Technology Guangzhou510641 China College of Materials Science and Engineering Chongqing University Chongqing400045 China Engineering Research Center of Optical Instrument and System Ministry of Education Shanghai Key Lab of Modern Optical System University of Shanghai for Science and Technology Shanghai200093 China

Glass forming regions of Al2O3-CaO-SrO (AlCaSr) system were systematically studied and clearly depicted by a combination of thermodynamic calculation method and traditional melt-quenching experiments. The glass forming region was first found with a composition range of Al2O3: 12-32 mol%, CaO: 43-68 mol%, and SrO: 20-36 mol%. Moreover, two representative glass compositions, 26.6Al2O3-49.4CaO-24SrO (AlCaSr-1) and 17.48Al2O3-58.52CaO-24SrO (AlCaSr-2), in central part of the experimental glass forming region and the corresponding glass doped with 1 mol% Er2O3, i.e., AlCaSr-1-Er and AlCaSr-2-Er, were selected and carefully prepared in our lab. Detailed investigations proved that the AlCaSr glasses had excellent comprehensive properties with high Tg temperature (~ 800 °C), wide transparency wavelength range (0.3-6 μm), and low maximum phonon energy (~ 770 cm-1), and good 2.7 μm mid-infrared emitting properties via doping Er3+ activators. These results highlight the potential application of AlCaSr glasses as infrared materials, and could benefit the development of high-performance infrared glasses. © 2024, The Authors. All rights reserved.

关键词： Aluminum oxide

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