Complex-domain sparse imaging in terahertz pulse time-domain holography with balance detection
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Yksityiskohdat
| Alkuperäiskieli | Englanti |
|---|---|
| Otsikko | Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XIII |
| Toimittajat | Laurence P. Sadwick, Tianxin Yang |
| Kustantaja | SPIE |
| ISBN (elektroninen) | 9781510633216 |
| DOI - pysyväislinkit | |
| Tila | Julkaistu - 2020 |
| OKM-julkaisutyyppi | A4 Artikkeli konferenssijulkaisussa |
| Tapahtuma | Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications - San Francisco, Yhdysvallat Kesto: 3 helmikuuta 2020 → 6 helmikuuta 2020 |
Julkaisusarja
| Nimi | Proceedings of SPIE |
|---|---|
| Vuosikerta | 11279 |
| ISSN (painettu) | 0277-786X |
| ISSN (elektroninen) | 1996-756X |
Conference
| Conference | Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications |
|---|---|
| Maa | Yhdysvallat |
| Kaupunki | San Francisco |
| Ajanjakso | 3/02/20 → 6/02/20 |
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.