Method and system for multi-pass laser-induced incandescence

Title: Method and system for multi-pass laser-induced incandescence

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.

Inventors:: Bambha, Ray; Michelsen, Hope A.

Issue Date:: 2018-09-04

OSTI Identifier:: 1475173

Assignee:: National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM) SNL

Patent Number(s):: 10,067,049

Application Number:: 15/239,634

Contract Number:: AC04-94AL85000

Resource Relation:: Patent File Date: 2016 Aug 17

Research Org:: Albuquerque Operations Office, Albuquerque, NM (United States)

Sponsoring Org:: USDOE

Country of Publication:: United States

Language:: English

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Other works cited in this record:

Ring-down cavity spectroscopy cell using continuous wave excitation for trace species detection
patent, June 1996

Lehmann, Kevin
US Patent Document 5,528,040
URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN%2F5528040

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