Reflection properties of the Salisbury screen

Fante, Ronald L.; McCormack, M.T.

doi:10.1109/8.8632

Cited by 649 publications

(328 citation statements)

References 4 publications

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“…This is the so-called Salisbury screen configuration, in which the film/metal-screen separation should be roughly λ/4n [85,86] (i.e., a phase of π is produced by the metallic reflection and another π contribution comes from phase associated with the round trip propagation between the film and the screen, assumed to be embedded in an environment of refractive index n). These ideas have been recently explored for graphene, leading to the prediction of complete optical absorption by a suitably patterned carbon layer [87,88], under the condition that the extinction cross-section per unit cell element is of the order of the unit cell area.…”

Section: Complete Optical Absorptionmentioning

confidence: 99%

Plasmonics in atomically thin materials

Abajo

Manjavacas

2015

Faraday Discuss.

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The observation and electrical manipulation of infrared surface plasmons in graphene have triggered a search for similar photonic capabilities in other atomically thin materials that enable electrical modulation of light at visible and near-infrared frequencies, as well as strong interaction with optical quantum emitters. Here, we present a simple analytical description of the optical response of such kinds of structures, which we exploit to investigate their application to light modulation and quantum optics. Specifically, we show that plasmons in one-atom-thick noble-metal layers can be used both to produce complete tunable optical absorption and to reach the strong-coupling regime in the interaction with neighboring quantum emitters. Our methods are applicable to any plasmon-supporting thin materials, and in particular, we provide parameters that allow us to readily calculate the response of silver, gold, and graphene islands. Besides their interest for nanoscale electro-optics, the present study emphasizes the great potential of these structures for the design of quantum nanophotonics devices.

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Section: Complete Optical Absorptionmentioning

confidence: 99%

Plasmonics in atomically thin materials

Abajo

Manjavacas

2015

Faraday Discuss.

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“…The use of absorbing screens [1] and antireflection coatings [2] to diminish the backscattering from objects are common in several applications. For example, you can make an object invisible to a radar with good absorbers, or with a strong scattering in other directions, but this is not proper invisibility.…”

Section: Introductionmentioning

confidence: 99%

Ideally Hard Struts to Achieve Invisibility

Fernández-González¹,

Rajo‐Iglesias²,

Silva³

2009

PIER

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Abstract-In this work, ideally hard struts with different cross sections are analyzed. Firstly, the characterization of the invisibility of a given object in terms of an equivalent blockage width is discussed. Then, the effect of the incidence angle on struts for reducing electromagnetic blockage using the same ideally hard cylinders is analyzed. It is shown that the variation of incidence angle in azimuth is very sensitive in terms of blockage for both polarizations. Finally, design charts for ideally hard struts which reduce blockage simultaneously for TE and TM cases are presented. This can be used to define some performance goals for final realized struts.

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“…One interesting recent discovery in optics and photonics concerns the role that interference can have in regulating light absorption. In particular, it is possible for a device to perfectly absorb an incident electromagnetic wave if all the wave components scattered out by the device destructively interfere [4][5][6][7]. Here, we use the term absorption in a broad sense, meaning any process by which the energy of an electromagnetic wave is transferred to a medium and hence converted, for example, to heat, electrical current or fluorescence.…”

Section: Introductionmentioning

confidence: 99%

“…Here, we use the term absorption in a broad sense, meaning any process by which the energy of an electromagnetic wave is transferred to a medium and hence converted, for example, to heat, electrical current or fluorescence. Perfect absorption is of great interest for a range of optical applications [8,9], including radar cloaking [4,5,10], sensing and molecular detection [11,12], photovoltaics [13], and photodetection [14,15].…”

Section: Introductionmentioning

confidence: 99%

“…A classic example of interference-assisted absorption is the Salisbury screen [4,5], an absorber for microwaves consisting of a thin resistive sheet placed above a flat reflector. With a specific sheet resistivity and a spacing of exactly one quarter of the wavelength, the reflectance goes to zero due to destructive interference between the scattering pathways in the device; an incident wave therefore delivers all of its energy into the sheet.…”

Section: Introductionmentioning

confidence: 99%

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Coherent perfect absorbers: linear control of light with light

et al. 2017

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Absorption of electromagnetic energy by a material is a phenomenon that underlies many applied problems, including molecular sensing, photocurrent generation and photodetection. Commonly, the incident energy is delivered to the system through a single channel, for example by a plane wave incident on one side of an absorber. However, absorption can be made much more efficient by exploiting wave interference. A coherent perfect absorber is a system in which complete absorption of electromagnetic radiation is achieved by controlling the interference of multiple incident waves. Here, we review recent advances in the design and applications of such devices. We present the theoretical principles underlying the phenomenon of coherent perfect absorption and give an overview of the photonic structures in which it can be realized, including planar and guidedmode structures, graphene-based systems, parity-and time-symmetric structures, 3D structures and quantum-mechanical systems. We then discuss possible applications of coherent perfect absorption in nanophotonics and, finally, we survey the perspectives for the future of this field.

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Reflection properties of the Salisbury screen

Cited by 649 publications

References 4 publications

Plasmonics in atomically thin materials

Plasmonics in atomically thin materials

Ideally Hard Struts to Achieve Invisibility

Coherent perfect absorbers: linear control of light with light

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