检索结果-南通市图书馆

Dispersion-less Kerr solitons in spectrally confined optical cavities

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Light(Science & Applications) 2023年第1期12卷 136-146页

作者： Xiaoxiao Xue philippe grelu Bofan Yang Mian Wang Shangyuan Li Xiaoping Zheng Bingkun Zhou Department of Electronic Engineering Beijing National Research Center for Information Science and TechnologyTsinghua University100084 BeijingChina Laboratoire ICB UMR 6303 CNRSUniversitéBourgogne Franche-Comté21000 DijonFrance

Solitons are self-reinforcing localized wave packets that manifest in the major areas of nonlinear science,from optics to biology and Bose-Einstein ***,optically driven dissipative solitons have attracted great attention for the implementation of the chip-scale frequency combs that are decisive for communications,spectroscopy,neural computing,and quantum information *** the current understanding,the generation of temporal solitons involves the chromatic dispersion as a key enabling physical effect,acting either globally or locally on the cavity dynamics in a decisive ***,we report on a novel class of solitons,both theoretically and experimentally,which builds up in spectrally confined optical cavities when dispersion is practically absent,both globally and ***,the interplay between the Kerr nonlinearity and spectral filtering results in an infiinite hierarchy of eigenfunctions which,combined with optical gain,allow for the generation of stable dispersion-less dissipative solitons in a previously unexplored *** the filter order tends to infinity,we find an unexpected link between dissipative and conservative solitons,in the form of Nyquist-pulse-like solitons endowed with an ultra-flat *** contrast to the conventional dispersion-enabled nonlinear Schr?dinger solitons,these dispersion-less Nyquist solitons build on a fully confined spectrum and their energy scaling is not constrained by the pulse ***-less soliton molecules and their deterministic transitioning to single solitons are also *** findings broaden the fundamental scope of the dissipative soliton paradigm and open new avenues for generating soliton pulses and frequency combs endowed with unprecedented temporal and spectral features.

关键词： solitons soliton confined

Saturable plasmonic metasurfaces for laser mode locking

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Light(Science & Applications) 2020年第1期9卷 1538-1546页

作者： Jiyong Wang Aurelien Coillet Olivier Demichel Zhiqiang Wang Davi Rego Alexandre Bouhelier philippe grelu Benoit Cluzel Laboratoire Interdisciplinaire Carnot de Bourgogne Universite Bourgogne Franche-Comte9 avenue Alain Savary21078 DijonFrance Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province School of EngineeringWestlake University18 Shilongshan Road310024 HangzhouZhejiang ProvinceChina Institute of Advanced Technology Westlake Institute for Advanced Study18 Shilongshan Road310024 HangzhouZhejiang ProvinceChina Department of Electrotechnology Federal Institute of BahiaR.Emidio dos Santos40301015 SalvadorBrazil

Metamaterials are artificial materials made of subwavelength elementary cells that give rise to unexpected wave properties that do not exist ***,these properties are generally achieved due to 3D patterning,which is hardly feasible at short wavelengths in the visible and near-infrared regions targeted by most photonic *** overcome this limitation,metasurfaces,which are the 2D counterparts of metamaterials,have emerged as promising platforms that are compatible with planar nanotechnologies and thus mass production,which platforms the properties of a metamaterial into a 2D *** the linear regime,wavefront manipulation for lensing,holography,and polarization control has been achieved *** in metasurfaces operating in the nonlinear regime has also increased due to the ability of metasurfaces to efficiently convert incident light into harmonic frequencies with unusual polarization ***,to date,the nonlinear absorption of metasurfaces has been mostly ***,we demonstrate that plasmonic metasurfaces behave as saturable absorbers with modulation performances superior to the modulation performance of other 2D materials and exhibit unusual polarimetric nonlinear transfer *** quantify the link between saturable absorption,the plasmonic resonances of the unit cell and their distribution in a 2D metasurface,and finally provide a practical implementation by integrating the metasurfaces into a fiber laser cavity operating in pulsed regimes driven by the metasurface *** such,this work provides new perspectives on ultrathin nonlinear saturable absorbers for applications where tunable nonlinear transfer functions are needed,such as in ultrafast lasers or neuromorphic circuits.

关键词： properties absorber overcome

Pattern formation in 2-μm Tm Mamyshev oscillators associated with the dissipative Faraday instability

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Photonics Research 2019年第11期7卷 1287-1295页

作者： Pan Wang Shunyu Yao philippe grelu Xiaosheng Xiao Changxi Yang State Key Laboratory of Precision Measurement Technology and Instruments Department of Precision InstrumentsTsinghua UniversityBeijing 100084China Laboratoire ICB UMR 6303 CNRS Universite Bourgogne Franche-ComteF-21078 Dijon CedexFrance

We investigate numerically the pattern formation in 2-μm thulium-doped Mamyshev fiber oscillators, associated with the dissipative Faraday instability. The dispersion-managed fiber ring oscillator is designed with commercial fibers, allowing the dynamics for a wide range of average dispersion regimes to be studied, from normal to nearzero cavity dispersion where the Benjamin–Feir instability remains inhibited. For the first time in the 2-μm spectral window, the formation of highly coherent periodic patterns is demonstrated numerically with rates up to ~100 GHz. In addition, irregular patterns are also investigated, revealing the generation of rogue waves via nonlinear collision processes. Our investigations have potential applications for the generation of multigigahertz frequency combs. They also shed new light on the dissipative Faraday instability mechanisms in the area of nonlinear optical cavity dynamics.

关键词： dynamics. Faraday dissipative

‘Plug-and-play’ plasmonic metafibers for ultrafast fibre lasers

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Light(Advanced Manufacturing) 2022年第4期3卷 27-38页

作者： Lei Zhang Huiru Zhang Ni Tang Xiren Chen Fengjiang Liu Xiaoyu Sun Hongyan Yu Xinyu Sun Qiannan Jia Boqu Chen Benoit Cluzel philippe grelu Aurelien Coillet Feng Qiu Lei Ying Wei E.I.Sha Xiaofeng Liu Jianrong Qiu Ding Zhao Wei Yan Duanduan Wu Xiang Shen Jiyong Wang Min Qiu College of Information Science and Electronic Engineering Zhejiang UniversityHangzhou 310027China Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province School of EngineeringWestlake University18 Shilongshan RoadHangzhou 310024Zhejiang ProvinceChina Institute of Advanced Technology Westlake Institute for Advanced Study18 Shilongshan RoadHangzhou 310024Zhejiang ProvinceChina Laboratory of Infrared Material and Devices&Key Laboratory of Photoelectric Materials and Devices of Zhejiang Province Advanced Technology Research InstituteNingbo UniversityNingbo 315211China Laboratoire Interdisciplinaire Carnot de Bourgogne UMR 6303 UniversitéBourgogne Franche-Comté9 avenue Alain Savary21078 DijonFrance Interdisciplinary Center for Quantum Information and Department of Physics Zhejiang UniversityHangzhouChina School of Materials Science and Engineering Zhejiang UniversityHangzhou 310027China State Key Laboratory of Modern Optical Instrumentation College of Optical Science and EngineeringZhejiang UniversityHangzhou 310027China

Metafibers expand the functionalities of conventional optical fibres to unprecedented nanoscale light manipulations by integrating metasurfaces on the fibre tips,becoming an emerging light-coupling platform for both the nanoscience and fibre optics *** metafibers remain proof-of-concept demonstrations that mostly explore isolated bare fibres owing to the lack of standard interfaces with universal fibre ***,we develop methodologies for fabricating well-defined plasmonic metasurfaces directly on the end facets of commercial single-mode fibre jumpers using standard planar technologies and provide the first demonstration of their practical applications in the nonlinear plasmonic *** plug-and-play connections with fibre circuitry and arbitrary metasurface landscapes,the metafibers with tunable plasmonic resonances are implemented into fibre laser cavities,yielding all-fibre sub-picosecond(minimum 513 fs)soliton mode locked lasers at optical wavelengths of 1.5μm and 2μm,demonstrating their unusual polarimetric nonlinear transfer functions and superior saturation absorption *** nanofabrication process flow is compatible with existing cleanroom technologies,offering metafibers an avenue to become a regular member of functionalised fibre *** work paves the way toward the next generation of ultrafast lasers,optical frequency combs,and ultracompact‘all-in-fibre’optical systems.

关键词： Nonlinear plasmonics Metasurfaces Metafibers Fibre lasers Saturable absorption