T-ray tomography
Abstract
We demonstrate tomographic T-ray imaging, using the timing information present in terahertz (THz) pulses in a reflection geometry. THz pulses are reflected from refractive-index discontinuities inside an object, and the time delays of these pulses are used to determine the positions of the discontinuities along the propagation direction. In this fashion a tomographic image can be constructed.
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Terahertz nondestructive testing can measure the thickness of common plastics and paint layers.
“Thus, THz nondestructive testing can be used to determine the thickness of common plastics 1 and paint layers. 2”
From Highly sensitive terahertz measurement of layer thickness using a two-cylinder waveguide sensor (2010) · cites this paper as [1]
Terahertz radiation passes efficiently through most dielectric materials.
“The terahertz ͑THz͒ frequency band ͑located between 100 GHz and 10 THz, corresponding to wavelengths between 3000 and 30 m in free-space͒ efficiently penetrates most dielectrics.”
From Highly sensitive terahertz measurement of layer thickness using a two-cylinder waveguide sensor (2010) · cites this paper as [1]
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Self-citationTerahertz time-domain spectroscopy of water vapor
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Self-citationChemical recognition of gases and gas mixtures with terahertz waves
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Terahertz spectroscopy and imaging - Modern techniques and applications
Jepsen, P. U., Cooke, D. G., & Koch, M. (2011) · Laser & Photonics Reviews · doi:10.1002/lpor.201000011 · Cited by 2,091 · see citing works
THz imaging and sensing for security applications—explosives, weapons and drugs
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Self-citationTerahertz paintmeter for noncontact monitoring of thickness and drying progress in paint film
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TeraHertz imaging of hidden paint layers on canvas
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Component spatial pattern analysis of chemicals using terahertz spectroscopic imaging
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Accuracy of sample material parameters reconstruction using terahertz pulsed spectroscopy
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Highly sensitive terahertz measurement of layer thickness using a two-cylinder waveguide sensor
Theuer, M., Beigang, R., & Grischkowsky, D. (2010) · Applied Physics Letters · doi:10.1063/1.3481080 · Cited by 38 · see citing works
Sensitivity increase for coating thickness determination using THz waveguides
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Feature extraction without phase error for THz reflective spectroscopy
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- Authors
- Mittleman, D. M., Hunsche, S., Boivin, L., & Nuss, M. C.
- Corresponding author
- Mittleman, Daniel M.
- Hunsche, Stefan
- Boivin, Luc
- Nuss, Martin C.
- Venue
- Optics Letters
- Publisher
- Optica Publishing Group
- Published
- 1997-06-15
- Volume
- 22
- Issue
- 12
- Pages
- 904
- ISSN
- 0146-9592 (ISSN-L)
- 1539-4794
- OpenAlex
- W2520049440
- Cited by
- 519
- References
- 6
- Citations by year
- 2026: 6 · 2025: 11 · 2024: 10 · 2023: 14 · 2022: 13 · 2021: 14 · 2020: 16 · 2019: 8 · 2018: 22 · 2017: 16 · 2016: 17 · 2015: 21 · 2014: 22 · 2013: 22 · 2012: 19
- FWCI
- 15.55
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Optics Letters (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Terahertz technology and applications
- Physical Sciences › Physics and Astronomy › Radiation › Advanced X-ray Imaging Techniques
- Physical Sciences › Engineering › Mechanics of Materials › Thermography and Photoacoustic Techniques
- Keywords
- terahertz tomography, terahertz imaging, refractive index discontinuity, reflection geometry, pulse timing, refractive index reconstruction
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