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| 1 | Optical metasurfaces: new generation building blocks for multi-functional optics显示文摘Optical metasurfaces(OMs)have emerged as promising candidates to solve the bottleneck of bulky optical elements.OMs offer a fundamentally new method of light manipulation based on scattering from resonant nanostructures rather than conventional refraction and propagation,thus offering efficient phase,polarization,and emission control.This perspective highlights state of the art OMs and provides a roadmap for future applications,including active generation,manipulation and detection of light for quantum technologies,holography and sensing. | Dragomir Neshev Igor Aharonovich | 2018 | Light(Science & Applications)2018，7，1： | 13 |
| 2 | Enhanced second-harmonic generation from two-dimensional MoSe_(2) on a silicon waveguide显示文摘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 sources.However,the sub-nanometer monolayer thickness of such materials limits the length of their nonlinear interaction with light.Here,we experimentally demonstrate the enhancement of the second-harmonic generation from monolayer MoSe_(2) by its integration onto a 220-nm-thick silicon waveguide.Such 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 process.The 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. | Haitao Chen Vincent Corboliou Alexander S Solntsev Duk-Yong Choi Maria A Vincenti Domenico de Ceglia Costantino de Angelis Yuerui Lu Dragomir N Neshev | 2017 | Light(Science & Applications)2017，6，1： | 7 |
| 3 | Boosting third-harmonic generation by a mirror-enhanced anapole resonator显示文摘We demonstrate that a dielectric anapole resonator on a metallic mirror can enhance the third harmonic emission by two orders of magnitude compared to a typical anapole resonator on an insulator substrate.By employing a gold mirror under a silicon nanodisk,we introduce a novel characteristic of the anapole mode through the spatial overlap of resonantly excited Cartesian electric and toroidal dipole modes.This is a remarkable improvement on the early demonstrations of the anapole mode in which the electric and toroidal modes interfere off-resonantly.Therefore,our system produces a significant near-field enhancement,facilitating the nonlinear process.Moreover,the mirror surface boosts the nonlinear emission via the free-charge oscillations within the interface,equivalent to producing a mirror image of the nonlinear source and the pump beneath the interface.We found that these improvements result in an extremely high experimentally obtained efficiency of 0.01%. | Lei Xu Mohsen Rahmani Khosro Zangeneh Kamali Aristeidis Lamprianidis Lavinia Ghirardini Jürgen Sautter Rocio Camacho-Morales Haitao Chen Matthew Parry Isabelle Staude Guoquan Zhang Dragomir Neshev Andrey E.Miroshnichenko | 2018 | Light(Science & Applications)2018，7，1： | 5 |
| 4 | Nonlinear frequency conversion in optical nanoantennas and metasurfaces:materials evolution and fabrication显示文摘Nonlinear frequency conversion is one of the most fundamental processes in nonlinear optics.It has a wide range of applications in our daily lives,including novel light sources,sensing,and information processing.It is usually assumed that nonlinear frequency conversion requires large crystals that gradually accumulate a strong effect.However,the large size of nonlinear crystals is not compatible with the miniaturisation of modern photonic and optoelectronic systems.Therefore,shrinking the nonlinear structures down to the nanoscale,while keeping favourable conversion efficiencies,is of great importance for future photonics applications.In the last decade,researchers have studied the strategies for enhancing the nonlinear efficiencies at the nanoscale,e.g.by employing different nonlinear materials,resonant couplings and hybridization techniques.In 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. | 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 | 2018 | Opto-Electronic Advances2018，1，10： | 3 |
| 5 | Yuri S Kivshar Solition stripes in two- dimensional nonlinear photonic lattices 显示文摘 | Dragomir Neshev | 2004 | OPTICS LETTERS2004，，： | 1 |
| 6 | Kivshar Soliton stripes in two- dimensional nonlinear photonie lattices 显示文摘 | Dragomir Neshev Yuri S | 2004 | OPTICS LETTERS2004，，： | 1 |
| 7 | Observation of DiscreteVortex Solitons in Optically Induced Photonic Lattices Phys 显示文摘 | Dragomir N Neshev | 2004 | Rev Lett2004，92，12： | 1 |
| 8 | Electrically programmable solid-state metasurfaces via flash localised heating显示文摘In the last decades,metasurfaces have attracted much attention because of their extraordinary light-scattering properties.However,their inherently static geometry is an obstacle to many applications where dynamic tunability in their optical behaviour is required.Currently,there is a quest to enable dynamic tuning of metasurface properties,particularly with fast tuning rate,large modulation by small electrical signals,solid state and programmable across multiple pixels.Here,we demonstrate electrically tunable metasurfaces driven by thermo-optic effect and flash-heating in silicon.We show a 9-fold change in transmission by<5 V biasing voltage and the modulation rise-time of<625µs.Our device consists of a silicon hole array metasurface encapsulated by transparent conducting oxide as a localised heater.It allows for video frame rate optical switching over multiple pixels that can be electrically programmed.Some of the advantages of the proposed tuning method compared with other methods are the possibility to apply it for modulation in the visible and near-infrared region,large modulation depth,working at transmission regime,exhibiting low optical loss,low input voltage requirement,and operating with higher than video-rate switching speed.The device is furthermore compatible with modern electronic display technologies and could be ideal for personal electronic devices such as flat displays,virtual reality holography and light detection and ranging,where fast,solid-state and transparent optical switches are required. | Khosro Zangeneh Kamali Lei Xu Nikita Gagrani Hark Hoe Tan Chennupati Jagadish Andrey Miroshnichenko Dragomir Neshev Mohsen Rahmani | 2023 | Light(Science & Applications)2023，12，3： | 0 |
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