Sub-diffraction-limit resonators operating on the fundamental monopolar resonance: application to THz polaritons

E. Strupiechonski; G. Xu; N. Isac; A. M. Andrews; Y. Todorov; C. Sirtori; G. Strasser; A. Degiron; R. Colombelli

doi:10.1364/QELS.2012.QTu3F.7

Conference on Lasers and Electro-Optics 2012
OSA Technical Digest (Optica Publishing Group, 2012),
paper QTu3F.7
•https://doi.org/10.1364/QELS.2012.QTu3F.7

Sub-diffraction-limit resonators operating on the fundamental monopolar resonance: application to THz polaritons

E. Strupiechonski, G. Xu, N. Isac, A. M. Andrews, Y. Todorov, C. Sirtori, G. Strasser, A. Degiron, and R. Colombelli

Quantum Electronics and Laser Science Conference 2012

San Jose, California United States
6–11 May 2012
ISBN: 978-1-55752-943-5

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Terahertz Metamaterials (QTu3F)

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E. Strupiechonski, G. Xu, N. Isac, A. M. Andrews, Y. Todorov, C. Sirtori, G. Strasser, A. Degiron, and R. Colombelli, "Sub-diffraction-limit resonators operating on the fundamental monopolar resonance: application to THz polaritons," in Conference on Lasers and Electro-Optics 2012, OSA Technical Digest (Optica Publishing Group, 2012), paper QTu3F.7.

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Abstract

We demonstrate semiconductor resonators operating on the fundamental monopolar resonance which corresponds to the fundamental oscillation mode of split-ring resonators. Their size is considerably below the optical diffraction limit in all three dimensions of space. The maximum confinement is obtained for resonators operating at a wavelength of λ ≈ 272 μm (ν ≈ 1.1 THz): they have a diameter of 13 μm and a thickness of 1 μm. This corresponds to a λ_eff/6 confinement in all 3 directions of space (λ_eff is the wavelength inside the material). As a proof-of-principle of cavity-QED application, we employ these resonators for intersubband polaritonics.

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