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Journal of Zhejiang University SCIENCE A 2005 Vol.6 No.5 P.355~357

http://doi.org/10.1631/jzus.2005.A0355


A completely open cavity realized with photonic crystal wedges


Author(s):  HE Sai-ling, RUAN Zhi-chao

Affiliation(s):  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; more

Corresponding email(s):   sailing@zju.edu.cn

Key Words:  Completely open cavity, Photonic crystal, Negative refraction index, Left-handed, Resonator


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HE Sai-ling, RUAN Zhi-chao. A completely open cavity realized with photonic crystal wedges[J]. Journal of Zhejiang University Science A, 2005, 6(5): 355~357.

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author="HE Sai-ling, RUAN Zhi-chao",
journal="Journal of Zhejiang University Science A",
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publisher="Zhejiang University Press & Springer",
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T1 - A completely open cavity realized with photonic crystal wedges
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DOI - 10.1631/jzus.2005.A0355


Abstract: 
A completely open cavity, which is formed by three 60-degree wedges of a photonic crystal with negative effective index, is introduced. Such a realizable design for a completely open cavity (i.e., without any reflective wall in the radial direction) is the first of its kind ever been reported. Due to the negative effective refraction index of the photonic crystal and the high transmission at the photonic crystal/air interfaces, a closed path with zero optical path is formed for the resonance. The present open cavity is very suitable for use as a biosens as it has large air wedges into which a liquid measurand can flow easily.

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Reference

[1] Luo, C., Johnson, S.G., Joannopoulos, J.D., 2002. All-angle negative refraction in a three dimensionally periodic photonic crystal. Appl. Phys. Lett., 81:2352.

[2] Notomi, M., 2000. Theory of light propagation in strongly modulated photonic crystals: Refraction like behavior in the vicinity of the photonic band gap. Phys. Rev. B, 62(16):10696-10705.

[3] Pendry, J.B., 2000. Negative refraction makes a perfect lens. Phys. Rev. Lett., 85(18):3966.

[4] Ruan, Z.C., Qiu, M., Xiao, S.S., He, S.L., Thylen, L., 2005. Coupling between plane waves and Bloch waves in photonic crystals with negative refraction. Phys. Rev. B, 71(4):045111.

[5] Shelby, R.A., Smith, D.R., Schultz, S., 2001. Experimental verification of a negative index of refraction. Science, 292:77.

[6] Taflove, A., 2000. Computational Electrodynamics: The Finite-Difference Time-Domain Method, 2nd Ed. Artech House INC, Norwood.

[7] Veselago, V.G., 1968. The electrodynamics of substances with simultaneously negative values of ε and µ. Sov. Phys. Usp., 10:509.

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