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Journal of Zhejiang University SCIENCE A

ISSN 1673-565X(Print), 1862-1775(Online), Monthly

2004 Vol.5 No.11 P.1322-1326

How to realize a negative refractive index material at the atomic level in an optical frequency range?

SHEN Jian-qi, RUAN Zhi-chao, HE Sai-ling

Centre for Optical and Electromagnetic Research, Joint Research Centre of Photonics of the Royal Institute of Technology Sweden and Zhejiang University, Zhejiang University, Hangzhou 310027, China; Laboratory of Photonics and Microwave Engineering, Department of Microelectronics and Information Technology, Royal Institute of Technology, Electrum 229, SE-164 40 Kista, Sweden

jqshen@coer.zju.edu.cn; sailing@kth.se

Abstract: The theoretical mechanism for realizing a negative refractive index material in an optical frequency range with an atomic gas system of electromagnetically induced transparency (EIT) is studied. It is shown that under certain conditions such a dense gas can exhibit simultaneously negative permittivity and negative permeability, and negligibly small loss.

Key words: Negative refractive index, Left-handed medium, Electromagnetically induced transparency, Atomic level, Optical frequency


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DOI:

10.1631/jzus.2004.1322

CLC number:

O413

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Received:

2004-09-10

Revision Accepted:

2004-09-20

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