Humphreys, M., Grant, J.P. , Escorcia-Carranza, I. , Accarino, C., Kenney, M. , Shah, Y.D. , Rew, K.G. and Cumming, D.R.S. (2018) Video-rate terahertz digital holographic imaging system. Optics Express, 26(20), pp. 25805-25813. (doi: 10.1364/OE.26.025805)
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Abstract
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.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Accarino, Claudio and Cumming, Professor David and Grant, Dr James and Rew, Miss Kirsty and Shah, Dr Yash Diptesh and Kenney, Dr Mitchell Guy and Escorcia Carranza, Dr Ivonne and Humphreys, Mark |
| Authors: | Humphreys, M., Grant, J.P., Escorcia-Carranza, I., Accarino, C., Kenney, M., Shah, Y.D., Rew, K.G., and Cumming, D.R.S. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Optics Express |
| Publisher: | Optical Society of America |
| ISSN: | 1094-4087 |
| ISSN (Online): | 1094-4087 |
| Copyright Holders: | Copyright © 2018 Journal |
| First Published: | First published in Optics Express 26(20):25805-25813 |
| Publisher Policy: | Reproduced under a Creative Commons License |
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