Flexible metamaterial absorbers for stealth applications at terahertz frequencies

Krzysztof Iwaszczuk; Andrew Strikwerda; K. Fan; X. Zhang; R.D. Averitt; P.U. Jepsen

doi:10.1364/OE.20.000635

Flexible metamaterial absorbers for stealth applications at terahertz frequencies

Krzysztof Iwaszczuk
, Andrew Strikwerda
, K. Fan
, X. Zhang
, R.D. Averitt
, P.U. Jepsen

Boston University

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

We have wrapped metallic cylinders with strongly absorbing metamaterials. These resonant structures, which are patterned on flexible substrates, smoothly coat the cylinder and give it an electromagnetic response designed to minimize its radar cross section. We compare the normal-incidence, small-beam reflection coefficient with the measurement of the far-field bistatic radar cross section of the sample, using a quasi-planar THz wave with a beam diameter significantly larger than the sample dimensions. In this geometry we demonstrate a near-400-fold reduction of the radar cross section at the design frequency of 0.87 THz. In addition we discuss the effect of finite sample dimensions and the spatial dependence of the reflection spectrum of the metamaterial. (C)2011 Optical Society of America

Original language	English
Journal	Optics Express
Volume	20
Issue number	1
Pages (from-to)	635-643
ISSN	1094-4087
DOIs	https://doi.org/10.1364/OE.20.000635
Publication status	Published - 2012

Bibliographical 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-20-1-635. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

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title = "Flexible metamaterial absorbers for stealth applications at terahertz frequencies",

abstract = "We have wrapped metallic cylinders with strongly absorbing metamaterials. These resonant structures, which are patterned on flexible substrates, smoothly coat the cylinder and give it an electromagnetic response designed to minimize its radar cross section. We compare the normal-incidence, small-beam reflection coefficient with the measurement of the far-field bistatic radar cross section of the sample, using a quasi-planar THz wave with a beam diameter significantly larger than the sample dimensions. In this geometry we demonstrate a near-400-fold reduction of the radar cross section at the design frequency of 0.87 THz. In addition we discuss the effect of finite sample dimensions and the spatial dependence of the reflection spectrum of the metamaterial. (C)2011 Optical Society of America ",

author = "Krzysztof Iwaszczuk and Andrew Strikwerda and K. Fan and X. Zhang and R.D. Averitt and P.U. Jepsen",

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doi = "10.1364/OE.20.000635",

language = "English",

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AU - Iwaszczuk, Krzysztof

AU - Strikwerda, Andrew

AU - Fan, K.

AU - Zhang, X.

AU - Averitt, R.D.

AU - Jepsen, P.U.

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-20-1-635. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

PY - 2012

Y1 - 2012

N2 - We have wrapped metallic cylinders with strongly absorbing metamaterials. These resonant structures, which are patterned on flexible substrates, smoothly coat the cylinder and give it an electromagnetic response designed to minimize its radar cross section. We compare the normal-incidence, small-beam reflection coefficient with the measurement of the far-field bistatic radar cross section of the sample, using a quasi-planar THz wave with a beam diameter significantly larger than the sample dimensions. In this geometry we demonstrate a near-400-fold reduction of the radar cross section at the design frequency of 0.87 THz. In addition we discuss the effect of finite sample dimensions and the spatial dependence of the reflection spectrum of the metamaterial. (C)2011 Optical Society of America

AB - We have wrapped metallic cylinders with strongly absorbing metamaterials. These resonant structures, which are patterned on flexible substrates, smoothly coat the cylinder and give it an electromagnetic response designed to minimize its radar cross section. We compare the normal-incidence, small-beam reflection coefficient with the measurement of the far-field bistatic radar cross section of the sample, using a quasi-planar THz wave with a beam diameter significantly larger than the sample dimensions. In this geometry we demonstrate a near-400-fold reduction of the radar cross section at the design frequency of 0.87 THz. In addition we discuss the effect of finite sample dimensions and the spatial dependence of the reflection spectrum of the metamaterial. (C)2011 Optical Society of America

U2 - 10.1364/OE.20.000635

DO - 10.1364/OE.20.000635

M3 - Journal article

SN - 1094-4087

VL - 20

SP - 635

EP - 643

JO - Optics Express

JF - Optics Express

IS - 1

ER -

Flexible metamaterial absorbers for stealth applications at terahertz frequencies

Abstract

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