Creating a zero-order resonator using an optical surface transformation

Sun, Fei; Ge, Xiaochen; He, Sailing

doi:10.1038/srep21333

Cited by 8 publications

(5 citation statements)

References 25 publications

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“…Two surfaces linked by optic-null medium (ONM) are equivalent surfaces in OST [18]. OST is broadly applicable in the design of lenses [18,20], electromagnetic open resonators [21], overlapped illusions [22], waveguide bends [23], scattering cover-up cloaks [24], subwavelength focusing [25], etc. ONM has extremely large permittivity and permeability along its main axis, and close to zero in orthogonal directions.…”

Section: Theoretical Methodsmentioning

confidence: 99%

A Camouflage Device Without Metamaterials

Sun¹,

Zhang²,

Evans³

et al. 2019

PIER

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We propose a camouflage device that can greatly reduce scattering in the microwave frequency using only uniform copper plates with no internal structuring (no metamaterials). The camouflage device is designed by optical surface transformation (OST), which is derived from transformation optics but much simpler than transformation optics. The key of our design is to choose suitable arrangement and lengths of these copper plates that satisfy Fabry-Perot condition. The proposed camouflage device can work when the detecting wave comes from a wide-angle range (not only works for some discrete angles). The proposed method will give a new and simple way to design and realize camouflage device.

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Section: Theoretical Methodsmentioning

confidence: 99%

A Camouflage Device Without Metamaterials

Sun¹,

Zhang²,

Evans³

et al. 2019

PIER

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“…Novel open optical cavities that have small mode volumes (subwavelength confinement) and high Q ‐factors at the same time are realized by TO . Based on the OST, we can also design an open optical resonator of an arbitrary shape with a small mode volume and high Q ‐factor in a much simpler way …”

Section: New Branches From Tomentioning

confidence: 99%

“…[195][196][197][198] Based on the OST, we can also design an open optical resonator of an arbitrary shape with a small mode volume and high Q-factor in a much simpler way. [199] Laser Photonics Rev. 2017, 11,1700034 C 2017 by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Figure 13.…”

Section: Some Typical Devices Designed By Ostmentioning

confidence: 99%

Transformation Optics: From Classic Theory and Applications to its New Branches

Sun

Zheng

Chen

et al. 2017

Laser & Photonics Reviews

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In the modern world, the ability to manipulate and control electromagnetic waves has greatly changed people's lives. Novel optical and electromagnetic phenomena and devices will lead to new scientific trends and techniques in the future. The exploration of new theories of optical design and new materials for optical engineering has attracted great attention in recent years. Transformation optics (TO) provides a new way to design optical devices with extraordinary predesigned functions such as invisibility cloaks and electromagnetic wormholes. As the development of artificial electromagnetic media (e.g. metamaterials and metasurfaces) progresses, many of these novel optical devices designed by TO have been experimentally demonstrated and used in specific applications. Starting from the basic theory of transformation optics, we review its applications, extensions, new branches and recent developments in this paper.

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“…Among the materials obtained from these transformations, the one that is attained from mapping a surface into a volume is known as the optic-null medium (ONM) and attract scientists' attentions due to its unique characteristics. For instance, Sun et al utilized ONM for designing different functionalities such as waveguide bends 23 , wave front reshaping devices 24 and other interesting novel applications [25][26][27][28][29][30] . Furthermore, it is well known that single conductor waveguides (e.g.…”

Section: Introductionmentioning

confidence: 99%

Geometry free materials enabled by transformation optics for enhancing the intensity of electromagnetic waves in an arbitrary domain

Abdolali

Sedeh

Fakheri

2020

Journal of Applied Physics

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The concentration of electromagnetic waves (EM) is of utmost importance in many engineering applications such as solar-cells. According to the transformation optics (TO) methodology, a feasible approach for obtaining arbitrary shape concentrators is proposed. In contrary to the previous works, the obtained materials are homogeneous and independent of the concentrator shape. That is regardless of the input geometry always one constant material, which is optic-null medium (ONM), is used and the performance of device will not alter. This competency will ease the design process and circumvent the sophisticated calculations of the necessitating materials. To authenticate the concept, several numerical full-wave simulations were performed for different shape concentrators. It was observed that numerical results exhibit strong agreement with the theoretical investigations and corroborate the generality and effectiveness of the proposed designing method.

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Creating a zero-order resonator using an optical surface transformation

Cited by 8 publications

References 25 publications

A Camouflage Device Without Metamaterials

A Camouflage Device Without Metamaterials

Transformation Optics: From Classic Theory and Applications to its New Branches

Geometry free materials enabled by transformation optics for enhancing the intensity of electromagnetic waves in an arbitrary domain

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