20.500.12556/RUL-133712 Titanium-based microbolometers control of spatial profile of terahertz emission in weak power sources Terahertz (THz) imaging and spectroscopy set-ups require fine optical alignment or precise control of spatial mode profile. We demonstrate universal, convenient and easy-to-use imaging—resonant and broadband antenna coupled ultrasensitive titanium-based—dedicated to accurately adjust and control spatial mode profiles without additional focusing optical components of weak power THz sources. Versatile operation of the devices is shown using different kinds of THz—electronic multiplier sources, optical THz mixer-based frequency domain and femtosecond optoelectronic THz time-domain spectrometers as well as optically pumped molecular THz laser. Features of the microbolometers within 0.15–0.6 THz range are exposed and discussed, their ability to detect spatial mode profiles beyond the antennas resonances, up to 2.52 THz, are explored. Polarization-sensitive mode control possibilities are examined in details. The suitability of the resonant antenna-coupled microbolometers to resolve low-absorbing objects at 0.3 THz is revealed via direct, dark field and phase contrast imaging techniques as well. microbolometer terahertz sensing terahertz imaging systems dark field method phase contrast method mikrobolometer teraherčno zaznavanje teraherčni slikovni sistemi metoda temnega polja metoda faznih kontrastov true false true Angleški jezik Slovenski jezik Članek v reviji 2021-12-10 12:24:46 2021-12-10 12:24:46 2022-09-13 03:52:16 0000-00-00 00:00:00 2020 0 0 12 str. iss. 10, art. 3400 Vol. 10 May.-2 2020 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.317.794 2076-3417 10.3390/app10103400 58940931 RAZ_Minkevicius_Linas_2020.pdf RAZ_Minkevicius_Linas_2020.pdf 1 BB94C6815510A6692EC988D4A55D114D 57f791764a69daddafbee658a21f9b3bcc214f46c97b634ed9fdf58e4e4a1db8 ff09b96e-59ab-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=152008 https://www.mdpi.com/2076-3417/10/10/3400 1 ab8e3561-59ab-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=152007 Fakulteta za elektrotehniko 0 0 0