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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 3, Iss. S1 — Aug. 28, 2005
  • pp: S74–S76

Transmission properties of terahertz radiation through a single sub-wavelength circular hole in the metal foil

Weili Cui, Zhenwei Zhang, Guozhong Zhao, Yan Zhang, and Cunlin Zhang  »View Author Affiliations


Chinese Optics Letters, Vol. 3, Issue S1, pp. S74-S76 (2005)


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Abstract

The terahertz (THz) transmission properties of a single sub-wavelength circular hole in the free-standing metal foil are experimentally investigated. A THz time-domain spectroscopy (THz-TDS) is utilized to measure the transmission coefficient from 0.2 to 2.2 THz. The transmission coefficients for the aperture with different diameters ranging from d=150 to 500 microns are presented. The results indicate that the samples change the temporal and spectral characteristics of the incident THz pulses. In particular, there is a remarkable stop band for d=150 microns in the transmission spectrum which the conventional diffraction theory cannot explain. Further theoretical analysis is necessary.

© 2005 Chinese Optics Letters

OCIS Codes
(050.1220) Diffraction and gratings : Apertures
(050.1940) Diffraction and gratings : Diffraction
(050.1970) Diffraction and gratings : Diffractive optics

Citation
Weili Cui, Zhenwei Zhang, Guozhong Zhao, Yan Zhang, and Cunlin Zhang, "Transmission properties of terahertz radiation through a single sub-wavelength circular hole in the metal foil," Chin. Opt. Lett. 3, S74-S76 (2005)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-3-S1-S74


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