Homogeneous optical cloak constructed with uniform layered structures

Jingjing Zhang, Liu Liu, Yu Luo, Shuang Zhang, N. Asger Mortensen

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

78 Downloads (Pure)

Resumé

The prospect of rendering objects invisible has intrigued researchers for centuries. Transformation optics based invisibility cloak design is now bringing this goal from science fictions to reality and has already been demonstrated experimentally in microwave and optical frequencies. However, the majority of the invisibility cloaks reported so far have a spatially varying refractive index which requires complicated design processes. Besides, the size of the hidden object is usually small relative to that of the cloak device. Here we report the experimental realization of a homogenous invisibility cloak with a uniform silicon grating structure. The design strategy eliminates the need for spatial variation of the material index, and in terms of size it allows for a very large obstacle/cloak ratio. A broadband invisibility behavior has been verified at near-infrared frequencies, opening up new opportunities for using uniform layered medium to realize invisibility at any frequency ranges, where high-quality dielectrics are available. © 2011 Optical Society of America.
OriginalsprogEngelsk
TidsskriftOptics Express
Vol/bind19
Udgave nummer9
Sider (fra-til)8625-8631
ISSN1094-4087
DOI
StatusUdgivet - 2011
Udgivet eksterntJa

Fingeraftryk

visibility
microwave frequencies
frequency ranges
gratings
optics
refractivity
broadband
silicon

Citer dette

Zhang, Jingjing ; Liu, Liu ; Luo, Yu ; Zhang, Shuang ; Mortensen, N. Asger. / Homogeneous optical cloak constructed with uniform layered structures. I: Optics Express. 2011 ; Bind 19, Nr. 9. s. 8625-8631.
@article{a25d4c2ea88248f5a0841a1130c00ed3,
title = "Homogeneous optical cloak constructed with uniform layered structures",
abstract = "The prospect of rendering objects invisible has intrigued researchers for centuries. Transformation optics based invisibility cloak design is now bringing this goal from science fictions to reality and has already been demonstrated experimentally in microwave and optical frequencies. However, the majority of the invisibility cloaks reported so far have a spatially varying refractive index which requires complicated design processes. Besides, the size of the hidden object is usually small relative to that of the cloak device. Here we report the experimental realization of a homogenous invisibility cloak with a uniform silicon grating structure. The design strategy eliminates the need for spatial variation of the material index, and in terms of size it allows for a very large obstacle/cloak ratio. A broadband invisibility behavior has been verified at near-infrared frequencies, opening up new opportunities for using uniform layered medium to realize invisibility at any frequency ranges, where high-quality dielectrics are available. {\circledC} 2011 Optical Society of America.",
author = "Jingjing Zhang and Liu Liu and Yu Luo and Shuang Zhang and Mortensen, {N. Asger}",
note = "This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/abstract.cfm?URI=oe-19-9-8625. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.",
year = "2011",
doi = "10.1364/OE.19.008625",
language = "English",
volume = "19",
pages = "8625--8631",
journal = "Optics Express",
issn = "1094-4087",
publisher = "The Optical Society",
number = "9",

}

Homogeneous optical cloak constructed with uniform layered structures. / Zhang, Jingjing; Liu, Liu; Luo, Yu; Zhang, Shuang; Mortensen, N. Asger.

I: Optics Express, Bind 19, Nr. 9, 2011, s. 8625-8631.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Homogeneous optical cloak constructed with uniform layered structures

AU - Zhang, Jingjing

AU - Liu, Liu

AU - Luo, Yu

AU - Zhang, Shuang

AU - Mortensen, N. Asger

N1 - This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/abstract.cfm?URI=oe-19-9-8625. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

PY - 2011

Y1 - 2011

N2 - The prospect of rendering objects invisible has intrigued researchers for centuries. Transformation optics based invisibility cloak design is now bringing this goal from science fictions to reality and has already been demonstrated experimentally in microwave and optical frequencies. However, the majority of the invisibility cloaks reported so far have a spatially varying refractive index which requires complicated design processes. Besides, the size of the hidden object is usually small relative to that of the cloak device. Here we report the experimental realization of a homogenous invisibility cloak with a uniform silicon grating structure. The design strategy eliminates the need for spatial variation of the material index, and in terms of size it allows for a very large obstacle/cloak ratio. A broadband invisibility behavior has been verified at near-infrared frequencies, opening up new opportunities for using uniform layered medium to realize invisibility at any frequency ranges, where high-quality dielectrics are available. © 2011 Optical Society of America.

AB - The prospect of rendering objects invisible has intrigued researchers for centuries. Transformation optics based invisibility cloak design is now bringing this goal from science fictions to reality and has already been demonstrated experimentally in microwave and optical frequencies. However, the majority of the invisibility cloaks reported so far have a spatially varying refractive index which requires complicated design processes. Besides, the size of the hidden object is usually small relative to that of the cloak device. Here we report the experimental realization of a homogenous invisibility cloak with a uniform silicon grating structure. The design strategy eliminates the need for spatial variation of the material index, and in terms of size it allows for a very large obstacle/cloak ratio. A broadband invisibility behavior has been verified at near-infrared frequencies, opening up new opportunities for using uniform layered medium to realize invisibility at any frequency ranges, where high-quality dielectrics are available. © 2011 Optical Society of America.

U2 - 10.1364/OE.19.008625

DO - 10.1364/OE.19.008625

M3 - Journal article

VL - 19

SP - 8625

EP - 8631

JO - Optics Express

JF - Optics Express

SN - 1094-4087

IS - 9

ER -