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Cnoidal waves and their soliton limits in single mode fiber lasers

Photonics Research 2024年第3期12卷 543-551页

作者： XIAO HU tupei chen SEONGWOO YOO DINGYUAN TANG Julong College Shenzhen Technology UniversityShenzhen 518118China School of Electrical and Electronic Engineering Nanyang Technological UniversitySingapore 639798Singapore

Cnoidal waves are a type of nonlinear periodic wave solutions of the nonlinear dynamic *** are well known in fluid dynamics,but it is not the case in *** this paper we show both experimentally and numerically that cnoidal waves could be formed in a fiber laser either in the net normal or net anomalous cavity dispersion regime,especially because,as the pump power is increased,the formed cnoidal waves could eventually evolve into a train of bright(in the net anomalous cavity dispersion regime)or dark(in the net normal cavity dispersion regime)*** simulations of the laser operation based on the extended nonlinear Schrödinger equation(NLSE)have well reproduced the experimental *** result not only explains why solitons can still be formed in a fiber laser even without mode locking but also suggests a new effective way of automatic stable periodic pulse train generation in lasers with a nonlinear cavity.

关键词： fiber pump mode

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LATERAL PHOTOEFFECT OF ULTRATHIN METAL FILMS AND INDIUM TIN OXIDE FILMS DEPOSITED ON n-Si SUBSTRATE

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Chinese Physics Letters 1989年第7期6卷 313-316页

作者： chen tupei HUANG Bingzhong ZHUO Jian LI Weidong ZHANG Xiangming Department of Physics Zhongshan UniversityGuangzhou

Uliraihin metal films and indium tin oxide(ITO)films were prepared by vacuum evaporation on n-iype Si *** structures exhibit interesting phoioelecironic properties,and lateral photovoltage was *** photovoltaic output can be a linear function of the position of light spot(localized illumination)with zero output for the light spot in the center;it reverses sign when the light spot scans from one side to the other side of the center *** mechanism for this photovoltaic behavior is discussed.

关键词： illumination RATE vacuum

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Toward transparent projection display:recent progress in frequency‐selective scattering of RGB light based on metallic nanoparticle’s localized surface plasmon resonance

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Opto-Electronic Advances 2019年第12期2卷 2-16页

作者： Yiyang Ye Zhen Liu tupei chen School of Electrical and Electronic Engineering Nanyang Technological UniversitySingapore 639798Singapore School of Materials and Energy Guangdong University of TechnologyGuangzhou 510006China

A transparent display simultaneously enables visualization of the images displayed on it as well as the view behind it,and therefore can be applied to,for instance,augmented reality(AR),virtual reality(VR),and head up display(HUD).Many solutions have been proposed for this ***,the idea of frequency-selective scattering of red,green and blue light while transmitting visible light of other colours to achieve transparent projection display has been proposed,by taking advantage of metallic nanoparticle’s localized surface plasmon resonance(LSPR).In this article,a review of the recent progress of frequency-selective scattering of red,green and blue light that are based on metallic nanoparticle’s LSPR is presented.A discussion of method for choosing appropriate metal(s)is first given,followed by the definition of a figure of merit used to quantify the performance of a designed nanoparticle *** scattering of various nanostructures,including sphere-shaped nanoparticles,ellipsoidal nanoparticles,super-sphere core-shell nanoparticles,metallic nanocubes,and metallic nanoparticles combined with gain materials,are discussed in *** nanostructure has its own advantages and disadvantages,but the combination of the metallic nanoparticle with gain materials is a more promising way since it has the potential to generate ultra-sharp scattering peaks(i.e.,high frequency-selectivity).

关键词： light scattering localized surface plasmon resonance transparent display

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Pt/Si界面的椭圆偏振光谱研究

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光学学报 1988年第10期8卷 877-883页

作者：陈土培黄炳忠中山大学物理系

本文应用椭圆偏振光谱法,研究未经热处理的Pt/（n-Si）界面.在350O（?）～650O（?）的光谱范围内,对椭圆偏振光谱的测量数据进行分析计算,以确定界面的光学响应.结果表明,Pt/（n-Si）界面存在着一界面层,其厚度d2-30±1（?）.本工作同... 详细信息

本文应用椭圆偏振光谱法,研究未经热处理的Pt/（n-Si）界面.在350O（?）～650O（?）的光谱范围内,对椭圆偏振光谱的测量数据进行分析计算,以确定界面的光学响应.结果表明,Pt/（n-Si）界面存在着一界面层,其厚度d2-30±1（?）.本工作同时得到了该界面层的表观光学常数谱和介电函数谱.应用有效介质理论对界面层的介电函数谱进行拟合分析,结果指出,界面层存在着富硅的氧化物(其平均效果是SiO1.54),界面区是Pt、Si和富硅氧化物的物理混合和化学混合区.

关键词：椭圆偏振光谱法界面界面层有效介质理论

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