Pulsed Photoconductive Connected Slot Array Operating at the Sub-mm Wavelength Band

A. Garufo, P. Sberna, G. Carluccio, J. R. Freeman, D. R. Bacon, L. Li, J. Bueno, J. J.A. Baselmans, E. H. Linfield, A. G. Davies, I. E. Lager, N. Llombart, A. Neto

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review


A novel pulsed photoconductive THz source is presented that is able to radiate mW-level average powers, over a large bandwidth by exploiting both the optical and electrical properties of photoconductive sources and the ultrawideband properties of connected antenna arrays. An optical system composed of a micro-lenses array splits the laser beam into N × N spots that host the active excitation of the antenna arrays. An 'ad hoc' network has been adopted to bias the array active spots in order to implement a connected antenna array configuration. The array feeds a silicon lens to increase the directivity of the radiated THz beam. A slot array prototype has been designed, fabricated, and measured. The proposed solutions achieve excellent power radiation levels by making use of an accurate electromagnetic design. This solution can offer enhancements to any active system relying on pulsed photoconductive antennas.

Original languageEnglish
Title of host publication2019 49th European Microwave Conference, EuMC 2019
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages4
ISBN (Electronic)9782874870552
Publication statusPublished - 1 Oct 2019
Event49th European Microwave Conference, EuMC 2019 - Paris, France
Duration: 1 Oct 20193 Oct 2019


Conference49th European Microwave Conference, EuMC 2019


  • connected array
  • Photoconductivity
  • THz photoconductive antenna
  • THz radiated power
  • THz source
  • THz technology
  • THz time-domain measurement
  • ultra-wideband array

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