Video-Rate Terahertz Digital Holographic Imaging System
Posted on 2018-09-19 - 16:02
Terahertz (THz) imaging has been demonstrated in numerous applications from medical to non-destructive evaluation (NDE), but current systems require expensive components, provide slow frame-rates and low resolutions. THz holography offers a potentially low-cost, high-performance alternative. Here we demonstrate the first full video-rate THz digital holography system at 2.52 THz (118.8 µm) using low-cost optical components. 2D digital reconstructions of samples are performed at frame-rates of 50 Hz - an order of magnitude higher than previous systems, whilst imaging of samples concealed in common packaging types demonstrates suitability for NDE applications. A lateral resolution of 250 µm was determined using a 1951 USAF target.
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Humphreys, Mark; Grant, James; Carranza, Ivonne Escorcia; Accarino, Claudio; Kenney, Mitchell; Shah, Yash; et al. (2018). Video-Rate Terahertz Digital Holographic Imaging System. Optica Publishing Group. Collection. https://doi.org/10.6084/m9.figshare.c.4136369.v1
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AUTHORS (8)
MH
Mark Humphreys
JG
James Grant
IC
Ivonne Escorcia Carranza
CA
Claudio Accarino
MK
Mitchell Kenney
YS
Yash Shah
KR
Kirsty Rew
DR
David R. S. Cumming