检索结果-南通市图书馆

Photonics Research 2024年第6期12卷 1213-1221页

作者： lingke wang JINGYU MI SHUQI wang WENRUI LI JU TANG JIAWEI ZHANG JIWEI ZHANG JIANLIN ZHAO Key Laboratory of Light Field Manipulation and Information Acquisition Ministry of Industry and Information Technologyand Shaanxi Key Laboratory of Optical Information TechnologySchool of Physical Science and TechnologyNorthwestern Polytechnical UniversityXi’an 710129China

Surface plasmon resonance microscopy(SPRM)has been massively applied for near-field optical measurement,sensing,and imaging because of its high detection sensitivity,nondestructive,noninvasive,wide-field,and label-free imaging ***,the transverse propagation characteristic of the surface plasmon wave generated during surface plasmon resonance(SPR)leads to notable“tail”patterns in the SPR image,which severely deteriorates the image ***,we propose an incidence angle scanning method in SPRM to obtain a resonance angle image with exceptional contrast that significantly mitigates the adverse effects of“tail”*** resonance angle image provides the complete morphology of the analyzed samples and enables two-dimensional quantification,which is incapable in conventional *** effectiveness of the method was experimentally verified using photoresist square samples with different sizes and two-dimensional materials with various geometric *** edges of samples were fully reconstructed and a maximum fivefold increase in the image contrast has been *** method offers a convenient way to enhance the SPRM imaging capabilities with low cost and stable performance,which greatly expands the applications of SPRM in label-free detection,imaging,and quantification.

关键词： angle resonance surface

在线全文

学校读者我要写书评

暂无评论

冷原子微波频标的原理与发展

中国激光 2024年第11期51卷 325-341页

作者：魏荣李耀汪凌珂吕德胜中国科学院上海光学精密机械研究所量子光学重点实验室上海201800 中国科学院大学材料科学与光电子学技术学院北京100049 中国科学院上海光学精密机械研究所空天激光技术与系统部上海201800

以原子喷泉为代表的冷原子微波频标近年来取得了飞速发展。基于激光冷却技术的喷泉钟通过原子的抛体运动实现Ramsey干涉,其鉴频谱线约1 Hz的窄线宽和优异的信噪比使得喷泉频标的长期稳定度和不确定度达到了10^(-16),其优异的稳定度指标... 详细信息

以原子喷泉为代表的冷原子微波频标近年来取得了飞速发展。基于激光冷却技术的喷泉钟通过原子的抛体运动实现Ramsey干涉,其鉴频谱线约1 Hz的窄线宽和优异的信噪比使得喷泉频标的长期稳定度和不确定度达到了10^(-16),其优异的稳定度指标也对振荡器提出了更高要求。基于光频标技术发展的光生微波可以实现10^(-15)的秒稳定度,从而使喷泉钟的稳定度达到了量子投影噪声极限。通过将性能优异的喷泉钟引入守时钟组,世界原子时的频率精度达到了约2×10^(-16)。除了地面应用外,冷原子频标还进入空间,获得了优异的性能指标,并将在导航定位和科学研究等领域发挥重要作用。中国科学院上海光学精密机械研究所在喷泉频标、光生微波等冷原子微波频标领域开展了系统研究,技术指标达到了国际先进水平,并实现了国际首台空间冷原子钟在轨运行。

关键词：时间频率喷泉频标稳定度 B类不确定度空间冷原子钟光生微波

在线全文

学校读者我要写书评

暂无评论

空间超稳激光技术(特邀)

中国激光 2024年第11期51卷 342-354页

作者：陈迪俊李唐周翠芸汪凌珂方苏孙广伟耿建新洪毅侯霞陈卫标中国科学院上海光学精密机械研究所空天激光技术与系统部上海201800

围绕我国空间激光应用重大需求,上海光学精密机械研究所持续开展空间超稳激光技术研究,推动空间超窄线宽激光器和高精度激光稳频等一系列超稳激光技术持续创新发展。研制的系列具有超窄线宽、超低噪声、超高稳定性的空间超稳激光器已经... 详细信息

围绕我国空间激光应用重大需求,上海光学精密机械研究所持续开展空间超稳激光技术研究,推动空间超窄线宽激光器和高精度激光稳频等一系列超稳激光技术持续创新发展。研制的系列具有超窄线宽、超低噪声、超高稳定性的空间超稳激光器已经成功应用到空间引力波探测、风云气象卫星、空间站、空间激光遥感等国家重大航天工程中,在轨频率稳定性也从10^(-7)稳步提升到10^(-12)甚至10^(-15),线宽小于1 Hz。介绍相关空间超稳激光器的技术方案、性能测试结果及在轨工作性能的情况。

关键词：空间激光器稳频超窄线宽频率噪声

All-fiber-based laser with 200 mHz linewidth

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Optics Letters 2019年第7期17卷 71-74页

作者： Junchao Huang lingke wang Yifei Duan Yafeng Huang Meifeng Ye Liang Liu Tang Li Key Laboratory of Quantum Optics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

We demonstrate the frequency stabilization of a 1.55 μm erbium-doped fiber laser by locking it to a 5-km-long optical fiber delay line(FDL).The stabilized laser is characterized via comparison with a second identical laser *** obtain a fractional frequency stability of better than 3 × 10^-15 over time scales of 1–10 s and a laser linewidth of 0.2 Hz, which is the narrowest linewidth of an FDL-stabilized laser observed to date.

关键词： All-fiber-based laser 200mHz linewidth delay line

Vibration-insensitive fiber spool for laser stabilization

在线全文

学校读者我要写书评

暂无评论

Chinese Optics Letters 2019年第8期17卷 47-51页

作者： Junchao Huang lingke wang Yifei Duan Yafeng Huang Meifeng Ye Lin Li Liang Liu Tang Li Key Laboratory of Quantum Optics Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 China Center of Materials Science and Optoelectronics Engineering University o f Chinese Academy of Sciences Beijing 100049 China

Excess frequency noise induced by mechanical vibration is the dominant noise source at low Fourier frequencies in fiber-delay-line stabilized lasers. To resolve this problem, a double-winding fiber spool is designed and implemented that has ultralow acceleration sensitivity in all spatial directions. By carefully choosing the optimal geometry parameters of the fiber spool, we achieve acceleration sensitivity of 8 × 10^-11/g and 3 × 10^-11/g(g denotes the gravitational acceleration) in axial and radial directions, respectively.

关键词： noise vibration directions

All-fiber-based photonic microwave generation with 10^(-15) frequency instability

在线全文

学校读者我要写书评

暂无评论

Chinese Optics Letters 2022年第2期20卷 96-99页

作者： Yifei Duan Yafeng Huang Yanli Li Yating wang Meifeng Ye Ming Li Yinnan Chen Jiaqi Zhou lingke wang Liang Liu Tang Li Key Laboratory of Quantum Optics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China University of Shanghai for Science and Technology Shanghai 200093China Shanghai Key Laboratory of Solid-State Laser and Application Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China

We demonstrate an all-fiber-based photonic microwave generation with 10^(-15) frequency *** system consists of an ultra-stable laser by optical fiber delay line,an all-fiber-based"figure-of-nine"optical frequency comb,a high signal-tonoise ratio photonic detection unit,and a microwave frequency *** whole optical links are made from optical fiber and optical fiber components,which renders the whole system compactness,reliability,and robustness with respect to environmental *** instabilities of 3.5×10^(-15) at 100 s for 6.834 GHz signal and 4.3×10^(-15) at 100 s for9.192 GHz signal were achieved.

关键词： ultra-stable laser optical frequency comb photonic microwave generation

All-fiber-based ultrastable laser with long-term frequency stability of 1.1×10^(-14)

在线全文

学校读者我要写书评

暂无评论

Chinese Optics Letters 2023年第3期21卷 84-89页

作者：黄亚峰胡笛叶美凤王亚婷李彦黎李明陈胤男屈求智汪凌珂刘亮李唐 Laboratory of Space Laser Engineering Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China University of Shanghai for Science and Technology Shanghai 200093China

We demonstrate an ultrastable miniaturized transportable laser system at 1550 nm by locking it to an optical fiber delay line[FDL].To achieve optimized long-term frequency stability,the FDL was placed into a vacuum chamber with a five-layer thermal shield,and a delicate two-stage active temperature stabilization,an optical power stabilization,and an RF power stabilization were applied in the system.A fractional frequency stability of better than 3.2×10^[-15]at 1 s averaging time and1.1×10^[-14]at 1000 s averaging time was achieved,which is the best long-term frequency stability of an all-fiber-based ultrastable laser observed to date.

关键词： fiber delay line frequency stability ultrastable laser

Preparation of Conductive Aluminum-Doped Zinc Oxide Powders and Their Properties

在线全文

学校读者我要写书评

暂无评论

Preparation of Conductive Aluminum-Doped Zinc Oxide Powders ...

中国颗粒学会第六届学术年会暨海峡两岸颗粒技术研讨会

作者： Shui Anze,wang Shumei,Zeng lingke,Liu Pingan,wang Hui,Chen Xiaosu (College of Materials Science and Engineering,South China University of Technology,Guangzhou,Guangdong 510640,China)

Zinc oxide powders with various Al doping contents(AZO) were prepared by the coprecipitation method in this study,and characterized by the X-ray diffraction(XRD) and scanning electron microscopy(SEM).The effects of the Al doping content, calcination temperature and calcination time on the conductive property were examined in *** experimental results show that the Al content influences significantly on the resistivity of the sample;when the Al content is less,Al can enter into the ZnO crystal lattice better,form the solid solution,and the resistivity decreases;excessive Al content causes the formation of the ZnAlO spinel phase, and the resistivity *** aluminum doped samples had good electric *** the Al content was 2mol%(relative to ZnO),the resistivity achieved to the minimum value 179.2Ωcm,in which the samples were prepared at calcination temperature 1300℃for 2h.

关键词： AZO Doping Coprecipitation Resistivity

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

乙醇胺体系硅酸锆包裹硫硒化镉色料的研究

陶瓷 2017年第3期 19-25页

作者：刘霄昱曾令可王慧刘华锋华南理工大学材料科学与工程学院广州510640

笔者研究了溶胶-共沉淀法制备硅酸锆包裹硫硒化镉色料在乙醇胺溶液体系中的合成工艺,进一步探讨了乙醇胺体系对色料各性能的影响。实验表明:在适宜浓度的乙醇胺体系中,前驱体的分散性优于水溶液体系,粒度在20~100nm;色料颗粒的酸洗孔随... 详细信息

笔者研究了溶胶-共沉淀法制备硅酸锆包裹硫硒化镉色料在乙醇胺溶液体系中的合成工艺,进一步探讨了乙醇胺体系对色料各性能的影响。实验表明:在适宜浓度的乙醇胺体系中,前驱体的分散性优于水溶液体系,粒度在20~100nm;色料颗粒的酸洗孔随着乙醇胺的浓度升高而减少,当浓度为100%时,孔洞基本消失,当乙醇胺浓度为50%时,色料的呈色效果最佳,色度值坐标为L=41.67,a=47.94,b=30.32,色剂包裹量为6.37%,且优于水溶液体系,乙醇胺浓度过高时,有机质的残留是影响色料呈色的主要原因,当乙醇胺浓度高于75%时,呈色效果迅速变差;适宜的乙醇胺体系中色料粒度分布比水溶液体系稍微宽,但粒度分布于0.1~1.0μm的细颗粒含量为14.96%,粒径小于2μm的颗粒含量为25.89%,这部分细颗粒的存在使此色料应用于陶瓷喷墨打印成为可能。

关键词：溶胶-共沉淀法硅酸锆包裹硫硒化镉色料乙醇胺

在线全文

学校读者我要写书评

暂无评论

面向空间引力波探测的低噪声稳频激光器

光学学报 2023年第19期43卷 212-218页

作者：李明黄亚峰叶美凤胡笛方苏王亚婷陈胤男曲亚男杨钰炜冯吉军汪凌珂刘亮李唐上海理工大学上海市现代光学系统重点实验室上海200093 中国科学院上海光学精密机械研究所航天激光工程部上海201800

基于未来卫星间激光干涉任务的需求,介绍了一种基于迈克耳孙光纤干涉仪稳频的1064 nm激光稳频系统,该系统采用全光纤器件,结构紧凑、体积小、可靠性强。通过拍频测试,得到该系统的频率噪声在30 mHz~1 Hz范围内小于30 Hz/Hz1/2,频率稳定... 详细信息

基于未来卫星间激光干涉任务的需求,介绍了一种基于迈克耳孙光纤干涉仪稳频的1064 nm激光稳频系统,该系统采用全光纤器件,结构紧凑、体积小、可靠性强。通过拍频测试,得到该系统的频率噪声在30 mHz~1 Hz范围内小于30 Hz/Hz1/2,频率稳定度在积分时间为1 s和1000 s时分别为1.2×10^(-14)和3×10^(-13)。该系统的性能满足LISA任务对稳频激光的需求,有望应用于未来的空间引力波探测任务。

关键词：激光光学稳频光纤干涉仪频率噪声