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Applied Sciences
Special Issues
New Challenges in Terahertz Detectors
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New Challenges in Terahertz Detectors

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Optics and Lasers".

Deadline for manuscript submissions: closed (20 September 2022) | Viewed by 1647

Special Issue Editor

Dr. Przemysław Zagrajek

E-Mail Website
Guest Editor
Institute of Optoelectronics, Military University of Technology, Kaliskiego 2, 00908 Warsaw, Poland
Interests: THz devices; application of THz detectors

Special Issue Information

Dear Colleagues,

The development of new terahertz detectors is still an interesting and exciting topic. The progress is driven by new application needs, as well as new discoveries in basic science. The unique properties of THz radiation make it useful for various fields. Astronomy, security, and medicine are the traditional fields of use. However, nondestructive inspection and wideband telecommunication are also being intensively investigated.

The Special Issue on terahertz detectors will focus on lens knowledge and achievements from microelectronics, high frequency electronics, nanodevices, material science, infrared branch, optics, radiometry, thermal phenomena, and many others. This implies a large variety of detection mechanisms. This Special Issue will address the current challenges in terahertz detectors.

Papers that describe the design, modelling, fabrication, or experimental verification are invited. Descriptions of THz detectors applications are also welcomed.

Dr. Przemysław Zagrajek
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Terahertz
  • Detector
  • Detection mechanism
  • Microbolometer, heterodyne, FET, calorimeter, and pyroelectric
  • Silicon, graphene, semiconductor, and superconductor
  • Fast detection, wideband telecommunication, and high frequency
  • Electromagnetic radiation, antenna, and radiation coupling

Published Papers (1 paper)

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Research

11 pages, 5482 KiB  
Article
The Role of the Directivity of Various THz Detectors in Multiplexing Systems
by Paweł Komorowski, Agnieszka Siemion, Michał Walczakowski and Przemysław Zagrajek
Appl. Sci. 2022, 12(7), 3545; https://0-doi-org.brum.beds.ac.uk/10.3390/app12073545 - 31 Mar 2022
Cited by 7 | Viewed by 1084
Abstract
Many modern and future systems, based on the wireless communication at the THz frequencies, could benefit from multichannel transmission. One of the possible approaches is to (de)multiplex several separate signals to and from a single transmission channel using dedicated diffractive optical elements. Proper [...] Read more.
Many modern and future systems, based on the wireless communication at the THz frequencies, could benefit from multichannel transmission. One of the possible approaches is to (de)multiplex several separate signals to and from a single transmission channel using dedicated diffractive optical elements. Proper selection of receivers for such systems is crucial and strongly depends not only on the frequencies used but also on the geometry of the setup. In this article, we present a complex analysis of the applicability of various detectors for the characterization of highly convergent and off-axis beams. Three three-focal-spot diffractive lenses have been designed, optimized and manufactured to verify the influence of parameters such as focal length, focal position shift, deflection angle or radiation frequency on the proper detection and separation of focal spots using different receivers. The reliable characterization of multi-focal-point structures can be performed only with high-acceptance-angle detectors, such as, for example, field-effect transistors equipped with a patch antenna. On the other hand, for the detection of a single demultiplexed signal, a much more directive receiver can be applied, as long as it is placed at a proper angle. Full article
(This article belongs to the Special Issue New Challenges in Terahertz Detectors)
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