Spectroscopic terahertz imaging at room temperature employing microbolometer terahertz sensors and its application to the study of carcinoma tissues

Irmantas Kašalynas (Author), Rimvydas Venckevičius (Author), Linas Minkevičius (Author), Aleksander Sešek (Author), Faustino Wahaia (Author), Vincas Tamošiunas (Author), Bogdan Voisiat (Author), Dalius Seliuta (Author), Gintaras Valušis (Author), Andrej Švigelj (Author), Janez Trontelj (Author)

Abstract

A terahertz (THz) imaging system based on narrow band microbolometer sensors (NBMS) and a novel diffractive lens was developed for spectroscopic microscopy applications. The frequency response characteristics of the THz antenna-coupled NBMS were determined employing Fourier transform spectroscopy. The NBMS was found to be a very sensitive frequency selective sensor which was used to develop a compact all-electronic system for multispectral THz measurements. This system was successfully applied for principal components analysis of optically opaque packed samples. A thin diffractive lens with a numerical aperture of 0.62 was proposed for the reduction of system dimensions. The THz imaging system enhanced with novel optics was used to image for the first time non-neoplastic and neoplastic human colon tissues with close to wavelength-limited spatial resolution at 584 GHz frequency. The results demonstrated the new potential of compact RT THz imaging systems in the fields of spectroscopic analysis of materials and medical diagnostics.

Keywords

kompaktni THz senzorji in komponente;THz slikovni sistem;multispektralna THz slika;medicinske THz slike;compact THz sensors and components;THz imaging system;multispectral THz imaging;medical THz imaging;

Data

Language:	English
Year of publishing:	2016
Typology:	1.01 - Original Scientific Article
Organization:	UL FE - Faculty of Electrical Engineering
UDC:	621.3.029.6
COBISS:	11319124
ISSN:	1424-8220
Views:	177
Downloads:	51
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary keywords:	kompaktni THz senzorji in komponente;THz slikovni sistemi;multispektralne THz slike;medicinske THz slike;
Type (COBISS):	Article
Pages:	str. 1-15
Volume:	ǂno. ǂ4
Issue:	432
Chronology:	Apr. 2016
DOI:	10.3390/s16040432
ID:	13394687