Coherent perfect absorption and transparency in a nanostructured graphene film

Zhang, Jianfa; Guo, Chucai; Liu, Ken; Zhu, Zhihong; Ye, Weimin; Yuan, Xiaodong; Qin, Shiqiao

doi:10.1364/oe.22.012524

Cited by 181 publications

(109 citation statements)

References 45 publications

Supporting

Mentioning

108

Contrasting

Order By: Relevance

“…Recently, substantial efforts have been devoted to the exploration of gradient metasurfaces, leading to the demonstration of wave-front shaping [6,7], the photonic spin Hall effect [8,9], an optical vortex plate [10], broadband optical retardation [11], a propagating-to-surfacewave converter [12], flat lenses and mirrors [13][14][15], super-oscillatory focusing [16] and optical holograms [17][18][19]. It was also recently shown that absorption [20][21][22][23], and polarization effects due to anisotropy and chirality [24], in a thin metasurface can be controlled by a second wave incident on the same surface. In this paper we demonstrate that reflection and refraction effects on this phase gradient metasurfaces can be coherently controlled by a second wave.…”

Section: Introductionmentioning

confidence: 99%

Coherent control of Snell’s law at metasurfaces

Shi¹,

Xu²,

Rogers³

et al. 2014

Opt. Express

View full text Add to dashboard Cite

It was recently demonstrated that the well-known Snell's law must be corrected for phase gradient metasurfaces to account for their spatially varying phase, leading to normal and anomalous transmission and reflection of light on such metasurfaces. Here we show that the efficiency of normal and anomalous transmission and reflection of light can be controlled by the intensity or phase of a second coherent wave. The phenomenon is illustrated using gradient metasurfaces based on V-shaped and rectangular apertures in a metal film. This coherent control effect can be exploited for wave front shaping and signal routing. References and Links

show abstract

Section: Introductionmentioning

confidence: 99%

Coherent control of Snell’s law at metasurfaces

Shi¹,

Xu²,

Rogers³

et al. 2014

Opt. Express

View full text Add to dashboard Cite

show abstract

“…Recently, more than one order of absorption enhancement of doped graphene disks has been experimentally demonstrated [56,57]. Previous studies focused on engineering section of absorption in graphene and the potential of using it to enhance the absorption of other light-absorbing materials [58,59].…”

Section: Graphene Plasmonics For Light Trappingmentioning

confidence: 99%

Plasmonic Study of Nanoparticles in Organic Photovoltic Cells: A Review

Sakshum¹,

Kushagra²,

Gauravi³

et al. 2017

J Org Inorg Chem

View full text Add to dashboard Cite

The worldwide consumption of energy has increased every year by several percentages in the last decades. Nowadays, a large amount of energy is produced by fossil fuels and to a certain extent by nuclear energy. However, these resources are limited and their use has a serious environmental impact. Solar light is the most important source of regenerative energy and represents an inexhaustible energy source. Owing to this fact the attention has been drawn during the last few years towards Solar cells. Moreover, to overcome barriers such as effective cost efficiency and commercial feasibility, methods of energy generations have turned to Organic Photovoltaics devices. The advantages being: generation of cost effective devices, use of renewable sources of energy and easy flexibility. In recent years rapid development in design has led to progressive PCE of organic solar cell from 3% to almost 9-10%. To improve the efficiency of organic solar cells it is, therefore, crucial to understand what limits the cell's performance and efficiency. The scattering from the metal nanoparticles is a way of increasing the light absorption and the efficiency in organic solar cells. This review discusses the recent significant technological developments that were presented in the literature with the basic mechanisms at work, which will help improve the organic photovoltaic performance and provide an outlook to future prospects in this area.

show abstract

“…There is counter-intuitive and can strongly provoke the thinking of the students. Doing the classes, we further encourage the student to think that how one can break this absorption limit, which leads to the concept of perfect absorbers and coherent perfect absorbers [5,6].…”

Section: Universal Absorption Limitation For 'Zero' Thickness Film Inmentioning

confidence: 99%

Enriching contents of optical courses with cutting-edge knowledge in nanophotonics

Zhang

Guo

et al. 2017

14th Conference on Education and Training in Optics and Photonics: ETOP 2017

Self Cite

View full text Add to dashboard Cite

In the past two decades, the development of nanophotonics, particularly photonic crystals, plasmonics, metamaterials and 2D material photonics, has led to the demonstration of many new and exotic optical phenomena that greatly changed our understanding of optics and electromagnetics. Bringing such cutting-edge knowledge to optical courses for undergraduate and postgraduate students can not only help the students better understand the fundamental principles of optics but also significantly increase their study interests. We have done this in the past several years and here we show some examples ranging from metamaterials to the optical responses of graphene.

show abstract

Coherent perfect absorption and transparency in a nanostructured graphene film

Cited by 181 publications

References 45 publications

Coherent control of Snell’s law at metasurfaces

Coherent control of Snell’s law at metasurfaces

Plasmonic Study of Nanoparticles in Organic Photovoltic Cells: A Review

Enriching contents of optical courses with cutting-edge knowledge in nanophotonics

Contact Info

Product

Resources

About