Li, C. , Grant, J. , Wang, J. and Cumming, D.S. (2013) A Nipkow disk integrated with Fresnel lenses for terahertz single pixel imaging. Optics Express, 21(21), pp. 24452-24459. (doi: 10.1364/OE.21.024452)
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Abstract
We present a novel Nipkow disk design for terahertz (THz) single pixel imaging applications. A 100 mm high resistivity (ρ≈3k-10k Ω·cm) silicon wafer was used for the disk on which a spiral array of twelve 16-level binary Fresnel lenses were fabricated using photolithography and a dry-etch process. The implementation of Fresnel lenses on the Nipkow disk increases the THz signal transmission compared to the conventional pinhole-based Nipkow disk by more than 12 times thus a THz source with lower power or a THz detector with lower detectivity can be used. Due to the focusing capability of the lenses, a pixel resolution better than 0.5 mm is in principle achievable. To demonstrate the concept, a single pixel imaging system operating at 2.52 THz is described.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Li, Dr Chong and Cumming, Professor David and Wang, Dr Jue and Grant, Dr James |
| Authors: | Li, C., Grant, J., Wang, J., and Cumming, D.S. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | Optics Express |
| Publisher: | Optical Society of America |
| ISSN: | 1094-4087 |
| ISSN (Online): | 1094-4087 |
| Copyright Holders: | Copyright © 2013 Optical Society of America |
| First Published: | First published in Optics Express 21(21):24452-24459 |
| Publisher Policy: | Reproduced in accordance with the copyright policy of the publisher |
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