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Complex-domain sparse imaging in terahertz pulse time-domain holography with balance detection

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


Original languageEnglish
Title of host publicationTerahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XIII
EditorsLaurence P. Sadwick, Tianxin Yang
ISBN (Electronic)9781510633216
Publication statusPublished - 2020
Publication typeA4 Article in a conference publication
EventTerahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications - San Francisco, United States
Duration: 3 Feb 20206 Feb 2020

Publication series

NameProceedings of SPIE
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceTerahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications
CountryUnited States
CitySan Francisco


Terahertz pulse time-domain holography (THz PTDH) is an ultimate technique both for the measurement of object optical properties and broadband wavefront sensing. However, THz PTDH has valuable restriction connected with low signal-to-noise ratio which becomes a serious issue in coherent measurements. This noise problem could be solved by filtering with use of modern block-matching algorithms based on nonlocal similarity of small patches of images existing in investigated objects. Here we present the study on the use of denoising algorithms applied for hyperspectral THz data in the spatio-temporal and spatial-spectral domain. We provide a numerical simulation of denoising in case of broadband uniform topologically charged (BUTCH) beam of pulsed THz radiation.


  • Hyperspectral data denoising, Pulse time-domain holography, Sparse imaging, THz radiation

Publication forum classification

Field of science, Statistics Finland