TUTCRIS - Tampereen teknillinen yliopisto

TUTCRIS

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

Tutkimustuotosvertaisarvioitu

Yksityiskohdat

AlkuperäiskieliEnglanti
OtsikkoTerahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XIII
ToimittajatLaurence P. Sadwick, Tianxin Yang
KustantajaSPIE
ISBN (elektroninen)9781510633216
DOI - pysyväislinkit
TilaJulkaistu - 2020
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaTerahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications - San Francisco, Yhdysvallat
Kesto: 3 helmikuuta 20206 helmikuuta 2020

Julkaisusarja

NimiProceedings of SPIE
Vuosikerta11279
ISSN (painettu)0277-786X
ISSN (elektroninen)1996-756X

Conference

ConferenceTerahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications
MaaYhdysvallat
KaupunkiSan Francisco
Ajanjakso3/02/206/02/20

Tiivistelmä

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.