Graphene opto-electronics and plasmonics for infrared frequencies

Here, we present novel aspects of infrared photocurrent and plasmonics in graphene, with a focus on understanding the physical mechanisms of plasmon damping and infrared photovoltage creation [Badioli et al. 2014]. Both far-field and near-field microscopy as well as near-field and far-field photocurrent mapping are used to study the nanoscale interactions between infrared light, hot carriers and plasmon excitations. We report record-high optical field confinement while maintaing relatively high plasmon quality factors (>30) [Woessner et al. 2014].

[1]  M. Prato,et al.  Science and technology roadmap for graphene, related two-dimensional crystals, and hybrid systems. , 2015, Nanoscale.

[2]  G. Vignale,et al.  Highly confined low-loss plasmons in graphene-boron nitride heterostructures. , 2014, Nature materials.

[3]  G. Navickaite,et al.  Phonon-mediated mid-infrared photoresponse of graphene. , 2014, Nano letters.

[4]  P. Avouris,et al.  Photodetectors based on graphene, other two-dimensional materials and hybrid systems. , 2014, Nature nanotechnology.

[5]  G. Vignale,et al.  Plasmon losses due to electron-phonon scattering: The case of graphene encapsulated in hexagonal boron nitride , 2014, 1408.1653.

[6]  J. Kong,et al.  High-responsivity mid-infrared graphene detectors with antenna-enhanced photocarrier generation and collection. , 2014, Nano letters (Print).

[7]  J. Kong,et al.  Photoresponse of an electrically tunable ambipolar graphene infrared thermocouple. , 2014, Nano letters.

[8]  Wenjuan Zhu,et al.  Photocurrent in graphene harnessed by tunable intrinsic plasmons , 2013, Nature Communications.

[9]  A. N. Grigorenko,et al.  Graphene plasmonics , 2012, Nature Photonics.

[10]  A. H. Castro Neto,et al.  Gate-tuning of graphene plasmons revealed by infrared nano-imaging , 2012, Nature.

[11]  Philippe Godignon,et al.  Optical nano-imaging of gate-tunable graphene plasmons , 2012, Nature.

[12]  S. N. Danilov,et al.  Helicity-dependent photocurrents in graphene layers excited by midinfrared radiation of a CO(2) laser , 2011, 1105.6262.

[13]  F. Koppens,et al.  Graphene plasmonics: a platform for strong light-matter interactions. , 2011, Nano letters.

[14]  A. Ferrari,et al.  Graphene Photonics and Optoelectroncs , 2010, CLEO 2012.