| Abstract: | 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. |