Electronic Sources and Detectors for Wideband Sensing in the Terahertz Regime

Weide, Daniel W. van der

doi:10.1007/978-3-540-45601-8_8

Cited by 3 publications

(1 citation statement)

References 47 publications

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“…The THz radiation propagates through the clothing, reflects from the hidden explosive, propagates back through the clothing and is finally detected. While many transmission spectra of explosives have been measured, there have been few reported measurements on reflection spectra [29][30][31]. Zhang et al [30] showed for the case of 2,4-DNT that characteristic spectral peaks appear in both the transmission and reflection spectra at the same wavelength.…”

Section: Transmission Versus Reflective Geometrymentioning

confidence: 99%

THz imaging and sensing for security applications—explosives, weapons and drugs

Federici

Schulkin

Huang

et al. 2005

Semicond. Sci. Technol.

1,556

647

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Over the past 5 years, there has been a significant interest in employing terahertz (THz) technology, spectroscopy and imaging for security applications. There are three prime motivations for this interest: (a) THz radiation can detect concealed weapons since many non-metallic, non-polar materials are transparent to THz radiation; (b) target compounds such as explosives and illicit drugs have characteristic THz spectra that can be used to identify these compounds and (c) THz radiation poses no health risk for scanning of people. In this paper, stand-off interferometric imaging and sensing for the detection of explosives, weapons and drugs is emphasized. Future prospects of THz technology are discussed.

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Section: Transmission Versus Reflective Geometrymentioning

confidence: 99%

THz imaging and sensing for security applications—explosives, weapons and drugs

Federici

Schulkin

Huang

et al. 2005

Semicond. Sci. Technol.

1,556

647

View full text Add to dashboard Cite

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Fast analysis of gases in the submillimeter∕terahertz with “absolute” specificity

Medvedev

Behnke

Lucia

2005

Applied Physics Letters

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A submillimeter∕terahertz point detector for gas monitoring and quantification is described. It is based upon the fast (∼15GHz∕s) sweeping of high spectral purity (<1∕107), high brightness (∼1014K) microwave sources and a scanning electronic reference for frequency measurement. This approach can quantify the complex rotational spectrum of gases at a rate of ∼105 spectral resolution elements∕second at high signal to noise. This resolution and the uniqueness of Doppler limited rotational spectra provide “absolute” specificity and “zero” false alarm rates even in complex mixtures. Moreover, the small size, low power consumption, and the potential of very low cost make this approach attractive for a number of important applications.

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