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您的检索式：作者名="DOMENICO DE CEGLIA"
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| 1 | 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 |
| 2 | Fundamental limits for transmission modulation in VO_(2) metasurfaces显示文摘The interest in dynamic modulation of light by ultra-thin materials exhibiting insulator–metal phase transition,such as VO_(2),has rapidly grown due to the myriad industrial applications,including smart windows and optical limiters.However,for applications in the telecommunication spectral band,the light modulation through a thin VO_(2) film is low due to the presence of strong material loss.Here,we demonstrate tailored nanostructuring of VO_(2) to dramatically enhance its transmission modulation,reaching a value as high as 0.73,which is 2 times larger than the previous modulation achieved.The resulting designs,including free-topology optimization,demonstrate the fundamental limit in acquiring the desired optical performance,including achieving positive or negative transmission contrast.Our results on nanophotonic management of lossy nanostructured films open new opportunities for applications of VO_(2) metasurfaces. | BOHAN LI ROCIO CAMACHO-MORALES NEUTON LI ANDREA TOGNAZZI MARCO GANDOLFI DOMENICO DE CEGLIA COSTANTINO DE ANGELIS ANDREY A.SUKHORUKOV ANDDRAGOMIR N.NESHEV | 2023 | Photonics Research2023，11，1： | 0 |
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