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We show that it is possible to realize significant nonlinear optical interactions at the few photon level in graphene nanostructures. Our approach takes advantage of the electric field enhancement associated with the strong confinement of…

Mesoscale and Nanoscale Physics · Physics 2014-08-11 M. Gullans , D. E. Chang , F. H. L. Koppens , F. J. García de Abajo , M. D. Lukin

Graphene is a 2D material with appealing electronic and optoelectronic properties. It is a zero-bandgap material with valence and conduction bands meeting in a single point (Dirac point) in the momentum space. Its conductivity can be…

Applied Physics · Physics 2020-03-10 V. Sorianello , G. Contestabile , M. Romagnoli

Graphene plasmons provide a suitable alternative to noble-metal plasmons because they exhibit much larger confinement and relatively long propagation distances, with the advantage of being highly tunable via electrostatic gating. We report…

Mesoscale and Nanoscale Physics · Physics 2016-09-21 Frank H. L. Koppens , Darrick E. Chang , F. Javier Garcia de Abajo

Graphene is an ideal material for optoelectronic applications. Its photonic properties give several advantages and complementarities over Si photonics. For example, graphene enables both electro-absorption and electro-refraction modulation…

The electronic properties of graphene are unique and are attracting increased attention to this novel 2-dimensional system. Its photonic properties are not less impressive. For example, this single atomic layer absorbs through direct…

Materials Science · Physics 2009-12-25 Fengnian Xia , Thomas Mueller , Yu-ming Lin , Alberto Valdes-Garcia , Phaedon Avouris

While silicon has dominated solid-state electronics for more than four decades, a variety of new materials have been introduced into photonics to expand the accessible wavelength range and to improve the performance of photonic devices. For…

Mesoscale and Nanoscale Physics · Physics 2010-09-24 Thomas Mueller , Fengnian Xia , Phaedon Avouris

Since the discovery of graphene, its excellent physical properties has greatly improved the performance of many optoelectronic devices and brought important technological revolution to optical research and application. Here, we introduce…

Optics · Physics 2021-09-07 Xianyou Wang , Yunqi Yuan , Xi Xie , Yuquan zhang , Changjun Min , Xiaocong Yuan

Graphene is an attractive material for nanomechanical devices because it allows for exceptional properties, such as high frequencies and quality factors, and low mass. An outstanding challenge, however, has been to obtain large coupling…

Mesoscale and Nanoscale Physics · Physics 2014-04-28 P. Weber , J. Güttinger , I. Tsioutsios , D. E. Chang , A. Bachtold

The richness of optical and electronic properties of graphene attracts enormous interest. Graphene has high mobility and optical transparency, in addition to flexibility, robustness and environmental stability. So far, the main focus has…

Materials Science · Physics 2015-05-19 F. Bonaccorso , Z. Sun , T. Hasan , A. C. Ferrari

Strain engineering has been recently recognized as an effective way to tailor the electrical properties of graphene. In the optical domain, effects such as strain-induced anisotropic absorption add an appealing functionality to graphene,…

Mesoscale and Nanoscale Physics · Physics 2013-12-31 Guang-Xin Ni , Hong-Zhi Yang , Wei Ji , Seung-Jae Baeck , Chee-Tat Toh , Jong-Hyun Ahn , Vitor M. Pereira , Barbaros Özyilmaz

Two-dimensional (2-D) materials are of tremendous interest to integrated photonics given their singular optical characteristics spanning light emission, modulation, saturable absorption, and nonlinear optics. To harness their optical…

The unique linear and massless band structure of graphene, in a purely two-dimensional Dirac fermionic structure, have led to intense research spanning from condensed matter physics to nanoscale device applications covering the electrical,…

A major achievement of the past decade has been the realization of macroscopic quantum systems by exploiting interactions between optical cavities and mechanical resonators. In these systems, phonons are coherently annihilated or created in…

Mesoscale and Nanoscale Physics · Physics 2016-09-21 R. De Alba , F. Massel , I. R. Storch , T. S. Abhilash , A. Hui , P. L. McEuen , H. G. Craighead , J. M. Parpia

It is commonly believed that weak light-matter interactions in low-mobility graphene dramatically limits tunability of graphene-based optoelectronic devices, such as tunable absorbers or switches. In this paper, we develop and use a simple…

Optics · Physics 2018-12-11 Xuchen Wang , Sergei A. Tretyakov

Graphene is an ultrathin material, which allows us to control surface phenomena by means of field-effect gating. Among various surface phenomena, photo-oxidation is known to be a facile method to largely control the electronic structure of…

Materials Science · Physics 2020-02-06 Ryo Nouchi , Morihiro Matsumoto , Nobuhiko Mitoma

We investigate the nonlinear optical features of a graphene sheet embedded in an active cavity and we show that, when tuned near its lasing threshold, the cavity is able to isolate the spatially localized graphene nonlinearity thus…

Optics · Physics 2015-05-27 Alessandro Ciattoni , Carlo Rizza

The realization of optoelectronic devices on paper has been an outstanding challenge due to the large surface roughness and incompatible nature of paper with optical materials. Here, we demonstrate a new class of optoelectronic devices on a…

We present fabrication and optical characterization of micro-cavities made of multilayer graphene (MLG) cantilevers clamped by metallic electrodes and suspended over Si/Si02 substrate. Graphene cantilevers act as a semi-transparent mirrors…

With the increasing need for large volumes of data processing, transport, and storage, optimizing the trade-off between high-speed and energy consumption in today's optoelectronic devices is getting increasingly difficult. Heterogeneous…

Optical interconnects are becoming attractive alternatives to electrical wiring in intra- and inter-chip communication links. Particularly, the integration with silicon complementary metal-oxide-semiconductor (CMOS) technology has received…

Mesoscale and Nanoscale Physics · Physics 2013-09-18 Andreas Pospischil , Markus Humer , Marco M. Furchi , Dominic Bachmann , Romain Guider , Thomas Fromherz , Thomas Mueller