TERAHERTZ RADIATION SOURCE MOUNTING ARRANGEMENTS AND METHODS OF MOUNTING A TERAHERTZ SOURCE
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United States of America Patent
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Issued Date -
Oct 16, 2014
app pub date -
Jun 26, 2014
filing date -
Jan 11, 2007
priority date (Note) -
Abandoned
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Abstract
Methods and apparatus for detecting variations in electromagnetic fields, in particular, terahertz (THz) electromagnetic fields, are provided. The methods and apparatus employ polarization detection devices and controllers to maintain or vary the polarization of modulated signals as desired. The methods and apparatus are provided to characterize electromagnetic fields by directing the electromagnetic field and a probe beam upon an electro-crystal and detecting the modulation of the resulting probe beam. Detection of the modulation of the probe beam is practiced by detecting and comparing the polarization components of the modulated probe beam. Aspects of the invention may be used to analyze or detect explosives, explosive related compounds, and pharmaceuticals, among other substances. A compact apparatus, modular optical devices for use with the apparatus, sample holders, and radiation source mounts are also disclosed.
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