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Designs for optical cloaking with high-order transformations.

Wenshan Cai¹, Uday K Chettiar, Alexander V Kildishev

¹School of Electrical and Computer Engineering and Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, USA.

|June 11, 2008

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Researchers developed practical optical cloaking designs using metamaterials for visible and infrared light. These designs leverage high-order transformations for both TM and TE polarizations, advancing cloaking technology.

Area of Science:

* Physics and Materials Science
* Optics and Photonics

Background:

* Metamaterial research has advanced theoretical cloaking capabilities.
* Translating theoretical cloaking concepts into practical devices remains a significant challenge.

Purpose of the Study:

* To present two novel structures for optical cloaking.
* To enable practical cloaking for both transverse magnetic (TM) and transverse electric (TE) polarizations.
* To demonstrate feasibility for visible and infrared wavelengths.

Main Methods:

* Utilized high-order transformations for cloak design.
* Developed specific structures for TM and TE polarizations.
* Analyzed designs for operation within visible and infrared spectra.

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Main Results:

* Presented two distinct metamaterial structures enabling optical cloaking.
* Designs are applicable to both TM and TE polarizations.
* Cloaking is achievable across visible and infrared wavelengths.

Conclusions:

* The presented designs offer a practical pathway for realizing optical cloaking devices.
* This work extends previous research on nonmagnetic cloaks and high-order transformations.
* The developed structures represent a critical step towards real-world metamaterial cloaking applications.