Improvement of a Terahertz Detector Performance Using the Terajet Effect in a Mesoscale Dielectric Cube: Proof of Concept

Igor V. Minin, Oleg V. Minin, Juan A. Delgado-Notario, Jaime Calvo-Gallego, Jesus E. Velázquez-Pérez, Miguel Ferrando-Bataller, Yahya Moubarak Meziani

Research output: Contribution to journalArticle

Abstract

Herein, a simple terahertz (THz) receiver that uses subwavelength focusing of the THz beam on the detector area is proposed. As a proof of concept, a THz detection system with an original optical coupling scheme is implemented, where the signal to be detected is coupled to a THz detector through a mesoscale dielectric particle lens. Coherent detection is successfully demonstrated with an enhancement of the detector sensitivity of about 4.3 dB, compared with that of a direct detection system with the slight decreasing (≈1.67 times) of noise equivalent power value. The results show that the proposed method can reduce the size and increase the sensitivity of various THz systems, including imaging, sensing, and ranging, which would enable significant progress in different fields such as physics, medicine, biology, astronomy, security, etc.

Original languageEnglish
JournalPhysica Status Solidi - Rapid Research Letters
DOIs
Publication statusAccepted/In press - 1 Jan 2020

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Keywords

  • detectors
  • gains
  • sensitivities
  • terajets

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Minin, I. V., Minin, O. V., Delgado-Notario, J. A., Calvo-Gallego, J., Velázquez-Pérez, J. E., Ferrando-Bataller, M., & Meziani, Y. M. (Accepted/In press). Improvement of a Terahertz Detector Performance Using the Terajet Effect in a Mesoscale Dielectric Cube: Proof of Concept. Physica Status Solidi - Rapid Research Letters. https://doi.org/10.1002/pssr.201900700