Mid-infrared biosensing with tunable graphene plasmons

2016 ◽  
Author(s):  
Wu Tingting ◽  
Wei Lei
Keyword(s):  
Mid Infrared ◽  
Graphene Plasmons

Efficient mid-infrared wavelength converter based on plasmon-enhanced nonlinear response in graphene nanoribbons

2021 ◽  
Author(s):  
Jiao Chi ◽  
Hongjun Liu ◽  
Zhaolu Wang ◽  
Nan Huang
Keyword(s):  
Graphene Sheet ◽  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Graphene Nanoribbons ◽  
Wavelength Converter ◽  
Third Order ◽  
Mid Infrared ◽  
Infrared Wavelength ◽  
Graphene Plasmons ◽  
Plasmon Polaritons

Abstract Graphene plasmons with enhanced localized electric field have been used for boosting the light-matter interaction in linear optical nano-devices. Meanwhile, graphene is an excellent nonlinear material for several third-order nonlinear processes. We present a theoretical investigation of the mechanism of plasmon-enhanced third-order nonlinearity susceptibility of graphene nanoribbons. It is demonstrated that the third-order nonlinearity susceptibility of graphene nanoribbons with excited graphene surface plasmon polaritons can be an order of magnitude larger than the intrinsic susceptibility of a continuous graphene sheet. Combining these properties with the relaxed phase matching condition due to the ultrathin graphene, we propose a novel plasmon-enhanced mid-infrared wavelength converter with arrays of graphene nanoribbons. The wavelength of sig-nal light is in mid-infrared range, which can excite the tunable surface plasmon polaritons in arrays of graphene nanoribbons. The efficiency of the converter from mid-infrared to near-infrared wavelength can be remarkably improved by 60 times compared with the graphene sheet without graphene plasmons. This work provides a novel idea for the efficient application of graphene in the nonlinear optical nano-devices. The proposed mid-infrared wavelength converter is compact, tunable and has promising potential in graphene-based mid-infrared detector with high detection efficiency.

scholarly journals Efficient electrical detection of mid-infrared graphene plasmons at room temperature

2018 ◽  
Vol 17 (11) ◽  
pp. 986-992 ◽  
Author(s):  
Qiushi Guo ◽  
Renwen Yu ◽  
Cheng Li ◽  
Shaofan Yuan ◽  
Bingchen Deng ◽  
...  
Keyword(s):  
Room Temperature ◽  
Electrical Detection ◽  
Mid Infrared ◽  
Graphene Plasmons

scholarly journals Author Correction: Efficient electrical detection of mid-infrared graphene plasmons at room temperature

2018 ◽  
Vol 17 (11) ◽  
pp. 1048-1048 ◽  
Author(s):  
Qiushi Guo ◽  
Renwen Yu ◽  
Cheng Li ◽  
Shaofan Yuan ◽  
Bingchen Deng ◽  
...  
Keyword(s):  
Room Temperature ◽  
Electrical Detection ◽  
Mid Infrared ◽  
Graphene Plasmons

scholarly journals Effects of Mid‐Infrared Graphene Plasmons on Photothermal Heating

2020 ◽  
Vol 14 (3) ◽  
pp. 1900656 ◽  
Author(s):  
Anh D. Phan ◽  
Do T. Nga ◽  
Do Chi Nghia ◽  
Vu Dinh Lam ◽  
Katsunori Wakabayashi
Keyword(s):  
Mid Infrared ◽  
Photothermal Heating ◽  
Graphene Plasmons

Chemical-specific biosensing through mid-infrared graphene plasmons

2016 ◽  
Author(s):  
Daniel Rodrigo ◽  
Odeta Limaj ◽  
Davide Janner ◽  
Dordaneh Etezadi ◽  
F. Javier Garcia-de-Abajo ◽  
...  
Keyword(s):  
Mid Infrared ◽  
Graphene Plasmons

Nanometer-scale cavities for mid-infrared light based on graphene plasmons

2021 ◽  
Author(s):  
Itai Epstein ◽  
David Alcaraz ◽  
Zhiqin Huang ◽  
Varun-Varma Pusapati ◽  
Jean-Paul Hugonin ◽  
...  
Keyword(s):  
Infrared Light ◽  
Nanometer Scale ◽  
Mid Infrared ◽  
Graphene Plasmons

scholarly journals Acoustic graphene plasmons advantage: in-plane strong scattering of infrared light by steps at the atomic level

2021 ◽  
Author(s):  
Ni Zhang ◽  
Weiwei Luo ◽  
Lei Wang ◽  
Jiang Fan ◽  
Wei Wu ◽  
...  
Keyword(s):  
Quantum Effect ◽  
Real Space ◽  
Atomic Level ◽  
Infrared Light ◽  
Strong Light ◽  
Fringe Contrast ◽  
Mid Infrared ◽  
Graphene Plasmons ◽  
Strong Scattering ◽  
Level Height

Abstract Acoustic graphene plasmons (AGPs) have an extreme level of field confinement and low loss in the mid-infrared and terahertz spectra, which have been applied for quantum effect exploration and ångström-thick material sensing. However, up to now, it is still a lack of exploration of the in-plane scattering of AGPs, though it is essential for the manipulation and utilization of ultraconfined optical field down to atomic level. In this work, by using scattering-type scanning near-field optical microscopy (s-SNOM), the mid-infrared AGPs, which are strongly scattered by atomic level height steps, were imaged in real-space. Particularly, even though the step height of the scatterer is four orders of magnitude lower than the incident free wavelength, strong scattering of AGPs still was achieved and can be attributed to larger reflectivity of AGPs than that of the traditional graphene plasmons (GPs). In addition, the scattering of AGPs by individual scatterers can be controlled via electrical back gating, in which a high fringe contrast up to about 82% was achieved. Our work suggests a feasible way to control extremely confined optical fields with atomic level height nanostructures, which can be used for ultra-compacted strong light-matter interactions, e.g. photodetector, biosensing, and strong coupling effects.

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