DocumentCode
19985
Title
Characterization of Terahertz Beam Profile and Propagation
Author
Molloy, J.F. ; Naftaly, M. ; Dudley, R.A.
Author_Institution
Nat. Phys. Lab., Teddington, UK
Volume
19
Issue
1
fYear
2013
fDate
Jan.-Feb. 2013
Firstpage
8401508
Lastpage
8401508
Abstract
Two techniques for imaging a terahertz (THz) beam profile are described and employed in characterizing the THz beam propagation in a time-domain spectrometer. Aperture scanning yields a 2-D cross-sectional map of field amplitude at selected frequencies that is used to track beam evolution along its path. The Hartmann test produces a 2-D topographical image of the wavefront, also at selected frequencies. The results are compared with theory, and the respective advantages of the two methods are discussed.
Keywords
light propagation; microwave photonics; physical optics; spectrometers; terahertz wave spectra; 2D cross-sectional map; 2D topographical wavefront image; Hartmann testing; THz beam propagation; aperture scanning; field amplitude; terahertz beam profile; terahertz beam propagation; time-domain spectrometer; Apertures; Imaging; Iris; Laser beams; Mirrors; Optical beams; Time domain analysis; Optical beams; physical optics; submillimeter wave imaging; submillimeter wave propagation;
fLanguage
English
Journal_Title
Selected Topics in Quantum Electronics, IEEE Journal of
Publisher
ieee
ISSN
1077-260X
Type
jour
DOI
10.1109/JSTQE.2012.2205668
Filename
6224166
Link To Document