Open AccessDesign of a quasioptical scanning system for a fast mobile FMCW terahertz imaging system
Author(s) -
Shiva Mohammadzadeh,
Fabian Friederich
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1537/1/012017
Subject(s) - galvanometer , raster scan , terahertz radiation , scanner , optics , radar , raster graphics , extremely high frequency , radar imaging , continuous wave radar , computer science , physics , telecommunications , computer vision , laser
Radar systems based on frequency-modulated continuous-wave (FMCW) technique are used in 3D terahertz imaging setups to construct volumetric images of dielectric samples in order to reveal internal structures and defects. In some applications, a mobile imaging system is preferred, to carry to the sample under test (SUT). We have integrated a single FMCW transceiver unit with opto-mechanical components to obtain 3D information faster, compared to single-point measurements with raster scan. A scanning module with aspherical telecentric f-9 lens as an optical objective system and a galvanometer scanner mirror are designed.