Broadband Wide Angle Lens Implemented with Dielectric Metamaterials

被引：25

作者：

Hunt, John ^{[1
]}

Kundtz, Nathan ^{[1
]}

Landy, Nathan ^{[1
]}

Nguyen, Vinh ^{[1
]}

Perram, Tim ^{[2
]}

Starr, Anthony ^{[2
]}

Smith, David R. ^{[1
]}

机构：

[1] Duke Univ, Dept Elect & Comp Engn, Ctr Metamat & Integrated Plasmon, Durham, NC 27708 USA

[2] SensorMetrix, San Diego, CA 92121 USA

来源：

SENSORS | 2011年 / 11卷 / 08期

关键词：

metamaterials; transformation optics; gradient index; Luneburg lens; CLOAK;

D O I：

10.3390/s110807982

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The Luneburg lens is a powerful imaging device, exhibiting aberration free focusing for parallel rays incident from any direction. However, its advantages are offset by a focal surface that is spherical and thus difficult to integrate with standard planar detector and emitter arrays. Using the recently developed technique of transformation optics, it is possible to transform the curved focal surface to a flat plane while maintaining the perfect focusing behavior of the Luneburg over a wide field of view. Here we apply these techniques to a lesser-known refractive Luneburg lens and implement the design with a metamaterial composed of a semi-crystalline distribution of holes drilled in a dielectric. In addition, we investigate the aberrations introduced by various approximations made in the implementation of the lens. The resulting design approach has improved mechanical strength with small aberrations and is ideally suited to implementation at infrared and visible wavelengths.

引用

页码：7982 / 7991

页数：10

共 18 条

[1] Material parameters and vector scaling in transformation acoustics [J].

Cummer, Steven A. ;

Rahm, Marco ;

Schurig, David .

NEW JOURNAL OF PHYSICS, 2008, 10

[2] Silicon nanostructure cloak operating at optical frequencies [J].

Gabrielli, Lucas H. ;

Cardenas, Jaime ;

Poitras, Carl B. ;

Lipson, Michal .

NATURE PHOTONICS, 2009, 3 (08) :461-463

[3] Low cost non radiative perforated dielectric waveguides [J].

Grigoropoulos, N ;

Young, PR .

33RD EUROPEAN MICROWAVE CONFERENCE, VOLS 1-3, CONFERENCE PROCEEDINGS, 2003, :439-442

[4] Relaxation approach for the generation of inhomogeneous distributions of uniformly sized particles [J].

Hunt, J. ;

Kundtz, N. ;

Landy, N. ;

Smith, D. R. .

APPLIED PHYSICS LETTERS, 2010, 97 (02)

[5] Spatial mapping of the internal and external electromagnetic fields of negative index metamaterials [J].

Justice, Bryan J. ;

Mock, Jack J. ;

Guo, Liheng ;

Degiron, Aloyse ;

Schurig, David ;

Smith, David R. .

OPTICS EXPRESS, 2006, 14 (19) :8694-8705

[6] A hemispherical electronic eye camera based on compressible silicon optoelectronics [J].

Ko, Heung Cho ;

Stoykovich, Mark P. ;

Song, Jizhou ;

Malyarchuk, Viktor ;

Choi, Won Mook ;

Yu, Chang-Jae ;

Geddes, Joseph B., III ;

Xiao, Jianliang ;

Wang, Shuodao ;

Huang, Yonggang ;

Rogers, John A. .

NATURE, 2008, 454 (7205) :748-753

[7]

Kundtz N, 2010, NAT MATER, V9, P129, DOI [10.1038/NMAT2610, 10.1038/nmat2610]

[8] Designing Three-Dimensional Transformation Optical Media Using Quasiconformal Coordinate Transformations [J].

Landy, N. I. ;

Kundtz, N. ;

Smith, D. R. .

PHYSICAL REVIEW LETTERS, 2010, 105 (19)

[9] Guiding light with conformal transformations [J].

Landy, Nathan I. ;

Padilla, Willie J. .

OPTICS EXPRESS, 2009, 17 (17) :14872-14879

[10] Hiding under the Carpet: A New Strategy for Cloaking [J].

Li, Jensen ;

Pendry, J. B. .

PHYSICAL REVIEW LETTERS, 2008, 101 (20)

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