The DOI matches its Crossref record; 22 of the 22 references it cites were found in a registry or an index.
Spectral artifacts from non-uniform samples analyzed by terahertz time-domain spectroscopy
Open accessAbstract
We report the impact of the spatial coherence distortion on the measured absorption spectra and the identification of materials analyzed by terahertz time-domain spectroscopy. It is shown that the deformation of the terahertz beam wave front can result into the overestimation of the electromagnetic absorption, the generation of artificial absorption peaks and even to the disappearance of characteristic absorption peaks. Obtaining clear absorption spectra without artifacts is crucial for applications based on terahertz imaging and spectroscopy.
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“Theberge et al [13] observed that compacted samples of both α -lactose monohydrate and cyclotrimethylene trinitramine (a nitramine explosive) powders presented anomalous spectral features when the powder grains were ground to 200 - 300 µm in diameter, however when the diameter was reduced to 5 µm these spectral features disappeared.”
From Unveiling the Origin of Spurious Features in THz-TDS of Powder Compacts (2025) · cites this paper as [13]
In the citing paper
“Spurious spectral features are known to occur for granular mixtures of large diameter microspheres (several tens to hundreds of microns in diameter), however these features disappear for smaller microspheres [13]”
From Unveiling the Origin of Spurious Features in THz-TDS of Powder Compacts (2025) · cites this paper as [13]
Citations
Cites
Non-destructive terahertz imaging of illicit drugs using spectral fingerprints
Kawase, K., Ogawa, Y., Watanabe, Y. Y., & Inoue, H. (2003) · Optics Express · doi:10.1364/oe.11.002549 · Cited by 1,376
Absorption coefficients of selected explosives and related compounds in the range of 0.1-2.8 THz
Chen, J., Chen, Y., Zhao, H., Bastiaans, G. J., & Zhang, X. (2007) · Optics Express · doi:10.1364/oe.15.012060 · Cited by 306
Zhong, H., Redo-Sanchez, A., & Zhang, X. (2006) · Optics Express · doi:10.1364/oe.14.009130 · Cited by 259
Millimeter-wave, terahertz, and mid-infrared transmissionthrough common clothing
Bjarnason, J. E., Chan, T. L. J., Lee, A. W. M., Celis, M. A., & Brown, E. R. (2004) · Applied Physics Letters · doi:10.1063/1.1771814 · Cited by 195
Detection of foreign bodies in chocolate with pulsed terahertz spectroscopy
Jördens, C., & Koch, M. (2008) · Optical Engineering · doi:10.1117/1.2896597 · Cited by 185
Terahertz imaging diagnostics of cancer tissues with a chemometrics technique
Nakajima, S., Hoshina, H., Yamashita, M., Otani, C., & Miyoshi, N. (2007) · Applied Physics Letters · doi:10.1063/1.2433035 · Cited by 181
Component spatial pattern analysis of chemicals using terahertz spectroscopic imaging
Watanabe, Y., Kawase, K., Ikari, T., Ito, H., Ishikawa, Y., & Minamide, H. (2003) · Applied Physics Letters · doi:10.1063/1.1595132 · Cited by 140
Detection and identification of illicit drugs using terahertz imaging
Lu, M., Shen, J., Li, N., Zhang, Y., Zhang, C., Liang, L., & Xu, X. (2006) · Journal of Applied Physics · doi:10.1063/1.2388041 · Cited by 131
Noninvasive Mail Inspection System with Terahertz Radiation
Hoshina, H., Sasaki, Y., Hayashi, A., Otani, C., & Kawase, K. (2009) · Applied Spectroscopy · doi:10.1366/000370209787169713 · Cited by 98
Investigation of inflammable liquids by terahertz spectroscopy
Ikeda, T., Matsushita, A., Tatsuno, M., et al. (2005) · Applied Physics Letters · doi:10.1063/1.1999847 · Cited by 90
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Unveiling the Origin of Spurious Features in THz-TDS of Powder Compacts
Gorecki, J., Murphy, K. N., Markl, D., Burnett, A. D., & Naftaly, M. (2025) · IEEE Transactions on Terahertz Science and Technology · doi:10.1109/tthz.2025.3549944 · Cited by 4
“For compacted granular samples, these features have been observed in polyethylene [7], ammonium nitrate powder, flour, and salt [8], Prussian Blue dye [9], Dinitro-toluene [11], and common sugars [11], [13].”
Influential
Metadata
- Authors
- Théberge, F., Châteauneuf, M., Dubois, J., Désilets, S., & Lussier, L.-S.
- Affiliations
- Defence Research and Development Canada (CA)
- Venue
- Optics Express
- Publisher
- Optica Publishing Group
- Published
- 2009-06-15
- Volume
- 17
- Issue
- 13
- Pages
- 10841
- ISSN
- 1094-4087 (ISSN-L)
- OpenAlex
- W1991513477
- Cited by
- 14
- References
- 22
- Citations by year
- 2026: 1 · 2025: 1 · 2024: 1 · 2023: 1 · 2022: 1 · 2018: 1 · 2016: 2 · 2015: 1 · 2013: 2
- FWCI
- 0.79
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Optics Express (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Terahertz technology and applications
- Physical Sciences › Chemistry › Spectroscopy › Spectroscopy and Laser Applications
- Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Metamaterials and Metasurfaces Applications
- Keywords
- spectral artifacts, terahertz absorption spectra, material identification, terahertz imaging
- MeSH terms
- Lactose, Manufactured Materials, Models, Theoretical, Polyesters, Polytetrafluoroethylene, Powders, Radiation, Models, Statistical, Artifacts, Terahertz Spectroscopy, Terahertz Imaging, Optics and Photonics
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