GAS SENSING SYSTEM EMPLOYING RAMAN SCATTERING

WIPO Patent Application WO/2012/071326

A3

A gas detection system includes a light detector, a pump laser with spectral emission between UV and IR wavelengths and structured to generate a laser beam, a hollow waveguide structured to receive a sample gas, the hollow waveguide having a bandwidth sufficient to transmit the laser beam and Stokes Raman photons scattered by the sample gas, and an optical system. The optical system is structured to: (i) direct the laser beam into the hollow waveguide such that it propagates in the hollow waveguide in one or more low-order low-loss waveguide modes, and (ii) direct Raman signals generated within the hollow waveguide in response to the laser beam interacting with the sample gas toward the light detector, the Raman signal including the Stokes Raman photons.

FALK JOEL (US)
CHEN PENG KEVIN (US)
BURIC MICHAEL PAUL (US)
WOODRUFF STEVEN D (US)

PCT/US2011/061649

October 04, 2012

November 21, 2011

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UNIV PITTSBURGH (US)
NAT ENERGY TECHNOLOGY LAB (US)
FALK JOEL (US)
CHEN PENG KEVIN (US)
BURIC MICHAEL PAUL (US)
WOODRUFF STEVEN D (US)

G01N21/31; G01N21/65

US4222011A	1980-09-09
US20080268469A1	2008-10-30
US4648714A	1987-03-10
US20100007876A1	2010-01-14
US20090059234A1	2009-03-05
US20070020144A1	2007-01-25

BURICC, MICHAEL P. ET AL.: "Metal-lined capillaries for efficient Raman gas sensing", LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS), 2010 CONFERENCE ON, 16 May 2010 (2010-05-16) - 21 May 2010 (2010-05-21)

LEVY, Philip E. et al. (LLC600 Grant Street,44th Floo, Pittsburgh Pennsylvania, US)

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