Detecting laser-induced fluorescence emissions
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United States of America Patent
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Oct 27, 2009
Grant Date -
Apr 10, 2008
app pub date -
Sep 30, 2005
filing date -
Oct 1, 2004
priority date (Note) -
Expired
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Abstract
A system for detecting a chemical element within a material including at least one laser emission means for ionizing part of the material to generate fluorescence; at least one transmitting Bragg grating that filters the wavelength corresponding to the deexcitation wavelength of the element; and at least one photodiode that detects a line corresponding to the filtering wavelength, wherein the at least one Bragg grating is mobile to vary the filtering wavelength.
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