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Abstract <p>The results of an experimental study of the generation of surface plasmon-polaritons in the terahertz range are presented. The end-fire coupling technique has been used for generation, when the beam is focused on the metal–dielectric interface. It has been found that at normal beam incidence the efficiency of plasmon-polaritons generation is maximum and the half-width of the dependence of the generation efficiency on the angle of radiation incidence in the sample plane is 6.0° ± 0.5°. It is shown that the generation efficiency has a maximum at a certain shift of the center of the incident beam relative to the metal–dielectric interface. The half-width of this maximum is 590 ± 50 μm, which is consistent with theory within the error limits.</p>

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On Optimal Conditions for Generation of Terahertz Surface Plasmon-Polaritons by the End-Fire Coupling Technique

  • 期刊论文

  • 发表日期：

    2025年4月1日

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  • P. A. Nikitin,
  • V. V. Gerasimov,
  • A. G. Lemzyakov

摘要

Abstract

The results of an experimental study of the generation of surface plasmon-polaritons in the terahertz range are presented. The end-fire coupling technique has been used for generation, when the beam is focused on the metal–dielectric interface. It has been found that at normal beam incidence the efficiency of plasmon-polaritons generation is maximum and the half-width of the dependence of the generation efficiency on the angle of radiation incidence in the sample plane is 6.0° ± 0.5°. It is shown that the generation efficiency has a maximum at a certain shift of the center of the incident beam relative to the metal–dielectric interface. The half-width of this maximum is 590 ± 50 μm, which is consistent with theory within the error limits.