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Spatial terahertz-light modulators for single-pixel cameras
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Ivanov Stantchev, Rayko and Pickwell-MacPherson, Emma (2022) Spatial terahertz-light modulators for single-pixel cameras. In: Borwen, You and Lu, Ja-Yu, (eds.) Terahertz Technology. IntechOpen. ISBN 9781839626128
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Official URL: http://dx.doi.org/10.5772/intechopen.96691
Abstract
Terahertz imaging looks set to become an integral part of future applications from semiconductor quality control to medical diagnosis. This will only become a reality when the technology is sufficiently cheap and capabilities adequate to compete with others. Single-pixel cameras use a spatial light modulator and a detector with no spatial-resolution in their imaging process. The spatial-modulator is key as it imparts a series of encoding masks on the beam and the detector measures the dot product of each mask and the object, thereby allowing computers to recover an image via post-processing. They are inherently slower than parallel-pixel imaging arrays although they are more robust and cheaper, hence are highly applicable to the terahertz regime. This chapter dedicates itself to terahertz single-pixel cameras; their current implementations, future directions and how they compare to other terahertz imaging techniques. We start by outlining the competing imaging techniques, then we discuss the theory behind single-pixel imaging; the main section shows the methods of spatially modulating a terahertz beam; and finally there is a discussion about the future limits of such cameras and the concluding remarks express the authors’ vision for the future of single-pixel THz cameras.
| Item Type: | Book Item | ||||||||||||||||||
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| Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TR Photography |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||||||||
| Library of Congress Subject Headings (LCSH): | Terahertz technology, Light modulators, Compressed sensing (Telecommunication) , Signal processing, Hadamard transform spectroscopy, Digital cameras | ||||||||||||||||||
| Journal or Publication Title: | Terahertz Technology | ||||||||||||||||||
| Publisher: | IntechOpen | ||||||||||||||||||
| ISBN: | 9781839626128 | ||||||||||||||||||
| Book Title: | Terahertz Technology | ||||||||||||||||||
| Editor: | Borwen, You and Lu, Ja-Yu | ||||||||||||||||||
| Official Date: | 17 August 2022 | ||||||||||||||||||
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| DOI: | 10.5772/intechopen.96691 | ||||||||||||||||||
| Status: | Peer Reviewed | ||||||||||||||||||
| Publication Status: | Published | ||||||||||||||||||
| Access rights to Published version: | Open Access | ||||||||||||||||||
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