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Enhanced second-harmonic generation from two-dimensional MoSe_(2) on a silicon waveguide

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Light(Science & Applications) 2017年第1期6卷 505-511页

作者： Haitao Chen Vincent Corboliou Alexander S Solntsev Duk-Yong Choi Maria A Vincenti Domenico de Ceglia Costantino de Angelis Yuerui Lu dragomir n neshev nonlinear Physics Centre Research School of Physics and EngineeringAustralian National UniversityCanberraACT 2601Australia Institut d’Optique Graduate School UniversitéParis-SudPalaiseau 91127France Laser Physics Centre Research School of Physics and EngineeringAustralian National UniversityCanberraACT 2601Australia national Research Council Charles M.Bowden LaboratoryRedstone ArsenalValhermoso SpringsAL 35898-5000USA Department of Information Engineering and InO CnR University of BresciaVia Branze 38Brescia 25123Italy Research School of Engineering College of Engineering and Computer ScienceAustralian National UniversityCanberraACT 2601Australia

Two-dimensional transition-metal dichalcogenides(TMDCs)with intrinsically broken crystal inversion symmetry and large secondorder nonlinear responses have shown great promise for future nonlinear light ***,the sub-nanometer monolayer thickness of such materials limits the length of their nonlinear interaction with ***,we experimentally demonstrate the enhancement of the second-harmonic generation from monolayer MoSe_(2) by its integration onto a 220-nm-thick silicon *** on-chip integration allows for a marked increase in the interaction length between the MoSe_(2) and the waveguide mode,further enabling phase matching of the nonlinear *** demonstrated TMDC–silicon photonic hybrid integration opens the door to second-order nonlinear effects within the silicon photonic platform,including efficient frequency conversion,parametric amplification and the generation of entangled photon pairs.

关键词： 2D material MoSe_(2) SHG waveguide

Photon pair generation from lithium niobate metasurface with tunable spatial entanglement[Invited]

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Chinese Optics Letters 2023年第1期21卷 25-31页

作者：张吉化马进勇 dragomir n.neshev Andrey A.Sukhorukov Centre of Excellence for Transformative Meta-Optical Systems(TMOS) Department of Electronic Materials Engineering(EME)Research School of PhysicsThe Australian National UniversityCanberraACT 2601Australia

The two-photon state with spatial entanglement is an essential resource for testing fundamental laws of quantum mechanics and various quantum *** creation typically relies on spontaneous parametric downconversion in bulky nonlinear crystals where the tunability of spatial entanglement is ***,we predict that ultrathin nonlinear lithium niobate metasurfaces can generate and diversely tune spatially entangled photon *** spatial properties of photons including the emission pattern,rate,and degree of spatial entanglement are analyzed theoretically with the coupled mode theory and Schmidt decomposition *** show that by leveraging the strong angular dispersion of the metasurface,the degree of spatial entanglement quantified by the Schmidt number can be decreased or increased by changing the pump laser wavelength and a Gaussian beam *** flexibility can facilitate diverse quantum applications of entangled photon states generated from nonlinear metasurfaces.

关键词： spontaneous parametric downconversion metasurface spatial entanglement

Tuning the second-harmonic generation in AlGaAs nanodimers via non-radiative state optimization [Invited]

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Photonics Research 2018年第5期6卷 I0031-I0037页

作者： DAVIDE Rocco VALERIO F.GILI LAVInIA GHIRARDInI LUCA CARLETTI IVAn FAVERO AnDREA LOCATELLI GIUSEPPE MARInO dragomir n.neshev MICHELE CELEBRAnO MARCO FInAZZI GIUSEPPE LEO COSTAnTInO DE AnGELIS Department of Information Engineering University of BresciaVia Branze 3&Brescia 25123Italy Materiaux et Phenomenes Quantiques Universite Paris DiderotCNRS UMR 716210 rue A.Domon et L.Duquet75013 ParisFrance Department of Physics Politecnico di MilanoPiazza Leonardo Da Vinci 32Milano 20133Italy national Institute of Optics(InO) Via Branze 45Brescia 25123Italy nonlinear Physics Centre Research School of Physics and EngineeringThe Australian National UniversityCanberraACT 2601Australia

Dielectric nanocavities are emerging as a versatile and powerful tool for the linear and nonlinear manipulation of light at the nanoscale. In this work, we exploit the effective coupling of electric and toroidal modes in AIGaAs nanodimers to locally enhance both electric and magnetic fields while minimizing the optical scattering, thereby optimizing their second-harmonic generation efficiency with respect to the case of a single isolated nanodisk. We also demonstrate that proper near-field coupling can provide fitrther degrees of freedom to control the polari- zation state and the radiation diagram of the second-harmonic field.

关键词： Tuning the second-harmonic generation AIGaAs nanodimers via non-radiative state optimization

Broadband infrared imaging governed by guidedmode resonance in dielectric metasurfaces

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Light(Science & Applications) 2024年第11期13卷 2599-2610页

作者： Ze Zheng Daria Smirnova Gabriel Sanderson Ying Cuifeng Demosthenes C.Koutsogeorgis Lujun Huang Zixi Liu Rupert Oulton Arman Yousefi Andrey E.Miroshnichenko dragomir n.neshev Mary O’neill Mohsen Rahmani Lei Xu Advanced Optics and Photonics Laboratory Department of EngineeringSchool of Science&TechnologyNottingham Trent UniversityNottingham NG118NSUK ARC Centre of Excellence for Transformative Meta-Optical Systems(TMOS) Research School of PhysicsThe Australian National UniversityCanberraACT 2601Australia School of Science&Technology Nottingham Trent UniversityNottingham NG118NSUK School of Physics and Electronic Science East China Normal UniversityShanghai 200241China School of Physics Nankai UniversityTianjin 300071China Department of Physics Imperial College LondonLondon SW72BWUK School of Engineering and Technology University of New South WalesCanberraACT 2600Australia

nonlinear metasurfaces have experienced rapid growth recently due to their potential in various applications,including infrared imaging and ***,due to the low conversion efficiencies of metasurfaces,several strategies have been adopted to enhance their performances,including employing resonances at signal or nonlinear emission *** strategy results in a narrow operational band of the nonlinear metasurfaces,which has bottlenecked many applications,including nonlinear holography,image encoding,and nonlinear ***,we overcome this issue by introducing a new nonlinear imaging platform utilizing a pump beam to enhance signal conversion through four-wave mixing(FWM),whereby the metasurface is resonant at the pump wavelength rather than the signal or nonlinear *** a result,we demonstrate broadband nonlinear imaging for arbitrary objects using metasurfaces.A silicon disk-on-slab metasurface is introduced with an excitable guided-mode resonance at the pump *** enabled direct conversion of a broad IR image ranging from>1000 to 4000 nm into ***,adopting FWM substantially reduces the dependence on high-power signal inputs or resonant features at the signal beam of nonlinear imaging by utilizing the quadratic relationship between the pump beam intensity and the signal conversion *** results,therefore,unlock the potential for broadband infrared imaging capabilities with metasurfaces,making a promising advancement for next-generation all-optical infrared imaging techniques with chip-scale photonic devices.

关键词： utilizing resonant governed

Enhanced generation of nondegenerate photon pairs in nonlinear metasurfaces

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Advanced Photonics 2021年第5期3卷 22-27页

作者： Matthew Parry Andrea Mazzanti Alexander Poddubny Giuseppe Della Valle dragomir n.neshev Andrey A.Sukhorukov Australia national University Research School of PhysicsCanberraAustralia ARC Centre of Excellence for Transformative Meta-Optical Systems CanberraAustralia Politecnico di Milano Dipartimento di FisicaMilanItaly ITMO University Department of PhysicsSaint PetersburgRussia Ioffe Institute Saint PetersburgRussia Consiglio nazionale delle Ricerche Istituto di Fotonica e NanotecnologieMilanItaly

We predict theoretically a regime of photon-pair generation driven by the interplay of multiple bound states in the continuum resonances in nonlinear *** nondegenerate photon-pair generation is derived from the hyperbolic topology of the transverse phase matching and can enable orders-of-magnitude enhancement of the photon rate and spectral brightness,as compared to the degenerate *** show through comprehensive simulations that the entanglement of the photon pairs can be tuned by varying the pump polarization,which can underpin future advances and applications of ultracompact quantum light sources.

关键词： optics photonics light metasurface spontaneous parametric down-conversion entanglement

Giant ultrafast dichroism and birefringence with active nonlocal metasurfaces

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Light(Science & Applications) 2024年第10期13卷 2240-2250页

作者： Giulia Crotti Mert Akturk Andrea Schirato Vincent Vinel Anton A.Trifonov Ivan C.Buchvarov dragomir n.neshev Remo Proietti Zaccaria Paolo Laporta Aristide Lemaître Giuseppe Leo Giulio Cerullo Margherita Maiuri Giuseppe Della Valle Department of Physics Politecnico di Milano20133 MilanoItaly Istituto Italiano di Tecnologia 16163 GenovaItaly Laboratoire Matériaux et Phénomènes Quantiques(MPQ) UniversitéParis Cité&CNRS75013 ParisFrance John Atanasoff Center for Bio and nano Photonics(JAC BnP) 1164 SofiaBulgaria Department of Physics St.Kliment Ohridski University of Sofia5 James Bourchier Boulevard1164 SofiaBulgaria ARC Centre of Excellence for Transformative Meta-Optical Systems(TMOS) Research School of PhysicsAustralian National UniversityActonACT 2601Australia. Cixi Institute of Biomedical Engineering Ningbo Institute of Industrial TechnologyChinese Academy of SciencesNingbo 315201China. Istituto di Fotonica e nanotecnologie(IFn) Consiglio Nazionale delle Ricerche20133 MilanoItaly. UniversitéParis-Saclay CNRSCentre de Nanosciences et de Nanotechnologies10 Boulevard Thomas Gobert91120 PalaiseauFrance Institut Universitaire de France(IUF) ParisFrance

Switching of light polarization on the sub-picosecond timescale is a crucial functionality for applications in a variety of contexts,including telecommunications,biology and *** ability to control polarization at ultrafast speed would pave the way for the development of unprecedented free-space optical links and of novel techniques for probing dynamical processes in complex systems,as chiral *** high switching speeds can only be reached with an all-optical paradigm,i.e.,engineering active platforms capable of controlling light polarization via ultrashort laser *** we demonstrate giant modulation of dichroism and birefringence in an all-dielectric metasurface,achieved at low fluences of the optical control *** performance,which leverages the many degrees of freedom offered by all-dielectric active metasurfaces,is obtained by combining a high-quality factor nonlocal resonance with the giant third-order optical nonlinearity dictated by photogenerated hot carriers at the semiconductor band edge.

关键词： dielectric surfaces nonlinearity

nonlinear integrated photonics

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Photonics Research 2018年第5期6卷 I0024-I0025页

作者： ERIC CASSAn CHRISTIAn GRILLET dragomir n.neshev DAVID J.MOSS Centre for nanosciences and nanotechnologies (C2n) Paris-Sud University CnRS Senior research fellow continuing position Institut des Nanotechnologies de Lyon (INL)Ecole centrale de Lyon nonlinear Physics Centre Australian National University Director of the Center for Micro-Photonics (CMP) Swinburne University of Technology

The field of nonlinear photonics is in full development. This special issue of Photonics Research takes you through the current issues of this fast-growing field of research, drawing on the current state of the art an... 详细信息

关键词： nonlinear integrated photonics full development

nonlinear frequency conversion in optical nanoantennas and metasurfaces:materials evolution and fabrication

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Opto-Electronic Advances 2018年第10期1卷 1-12页

作者： Mohsen Rahmani Giuseppe Leo Igal Brener Anatoly V. Zayats Stefan A. Maier Costantino De Angelis Hoe Tan Valerio Flavio Gili Fouad Karouta Rupert Oulton Kaushal Vora Mykhaylo Lysevych Isabelle Staude Lei Xu Andrey E. Miroshnichenko Chennupati Jagadish dragomir n. neshev Research School of Physics and Engineering The Australian National University Canberra ACT 2601 Australia Matériaux et Phénomènes Quantiques Université Paris Diderot-Sorbonne Paris Cité 10 rue A. Domon et L. Duquet 75013 Paris France Center for Integrated nanotechnologies Sandia National Laboratories Albuquerque New Mexico 87185 United States Department of Physics King’s College London Strand London WC2R 2LS United Kingdom The Blackett Laboratory Department of Physics Imperial College London London SW7 2AZ United Kingdom Chair in Hybrid nanosystems Nano Institute Munich Fakultat für Physik Ludwig-Maximilians-Universitat München München Germany Deptartment of Information Engineering Universitàdegli Studi di Brescia and INO-CNR Via Branze 38 25123 Brescia Italy Institute of Applied Physics Abbe Center of Photonics Friedrich Schiller University Jena 07745 Jena Germany School of Engineering and Information Technology University of New South Wales Canberra ACT 2600 Australia

nonlinear frequency conversion is one of the most fundamental processes in nonlinear *** has a wide range of applications in our daily lives,including novel light sources,sensing,and information *** is usually assumed that nonlinear frequency conversion requires large crystals that gradually accumulate a strong ***,the large size of nonlinear crystals is not compatible with the miniaturisation of modern photonic and optoelectronic ***,shrinking the nonlinear structures down to the nanoscale,while keeping favourable conversion efficiencies,is of great importance for future photonics *** the last decade,researchers have studied the strategies for enhancing the nonlinear efficiencies at the nanoscale,*** employing different nonlinear materials,resonant couplings and hybridization *** this paper,we provide a compact review of the nanomaterials-based efforts,ranging from metal to dielectric and semiconductor nanostructures,including their relevant nanofabrication techniques.

关键词： nonlinear nanophotonics metallic nanoantennas dielectric nanoantennas III-V semiconductor nanoantenna nanofabrication

Third-harmonic generation and imaging with resonant Si membrane metasurface

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Opto-Electronic Advances 2023年第8期6卷 18-27页

作者： Ze Zheng Lei Xu Lujun Huang Daria Smirnova Khosro Zangeneh Kamali Arman Yousefi Fu Deng Rocio Camacho-Morales Cuifeng Ying Andrey E.Miroshnichenko dragomir n.neshev Mohsen Rahmani Advanced Optics and Photonics Laboratory Department of EngineeringSchool of Science&TechnologyNottingham Trent UniversityNottingham NG118NSUK School of Engineering and Information Technology University of New South WalesCanberra ACT 2600Australia School of Physics and Electronic Science East China Normal UniversityShanghai 200241China ARC Centre of Excellence for Transformative Meta-Optical Systems(TMOS) Research School of PhysicsAustralian National UniversityCanberra ACT 2601Australia Department of Physics Hong Kong University of Science and TechnologyKowloonHong Kong SAR 999077China

Dielectric metasurfaces play an increasingly important role in enhancing optical nonlinear generations owing to their ability to support strong light-matter interactions based on Mie-type multipolar *** to metasurfaces composed of the periodic arrangement of nanoparticles,inverse,so-called,membrane metasurfaces offer unique possibilities for supporting multipolar resonances,while maintaining small unit cell size,large mode volume and high field enhancement for enhancing nonlinear frequency ***,we theoretically and experimentally investigate the formation of bound states in the continuum(BICs)from silicon dimer-hole membrane *** demonstrate that our BIC-formed resonance features a strong and tailorable electric near-field confinement inside the silicon membrane ***,we show that by tuning the gap between the holes,one can open a leaky channel to transform these regular BICs into quasi-BICs,which can be excited directly under normal plane wave *** prove the capabilities of such metasurfaces,we demonstrate the conversion of an infrared image to the visible range,based on the Third-harmonic generation(THG)process with the resonant membrane *** results suggest a new paradigm for realising efficient nonlinear photonics metadevices and hold promise for extending the applications of nonlinear structuring surfaces to new types of all-optical near-infrared imaging technologies.

关键词： nonlinear imaging third-harmonic generation bound states in the continuum membrane metasurfaces