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Method and system for multi-pass laser-induced incandescence

United States Patent

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September 4, 2018
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Various technologies for measurement of properties of a particulate suspended in a gas phase via laser-induced incandescence (LII) are described herein. A beam of light can be emitted into a multi-pass optical cell using a laser. The multi-pass optical cell comprises a system of one or more mirrors that repeatedly reflects the beam through a measurement region, stimulating incandescence of particulates present in the measurement region. An LII detection system having a field of view that encompasses the measurement region then receives blackbody or quasi-blackbody radiation emitted by the incandescing particles and outputs data indicative of one or more properties of the particulates in the measurement region.
August 17, 2016
G01N 15/00 (20060101); G01N 15/14 (20060101); G01N 21/71 (20060101); G01N 21/00 (20060101);
STATEMENT OF GOVERNMENTAL INTEREST This invention was developed under Contract DE-AC04-94AL85000 between Sandia Corporation and the U.S. Department of Energy. The U.S. Government has certain rights in this invention.