The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 18, 2014
Filed:
Nov. 21, 2011
Joel Falk, Pittsburgh, PA (US);
Peng Kevin Chen, Wexford, PA (US);
Michael Paul Buric, Pittsburgh, PA (US);
Steven D. Woodruff, Morgantown, WV (US);
Joel Falk, Pittsburgh, PA (US);
Peng Kevin Chen, Wexford, PA (US);
Michael Paul Buric, Pittsburgh, PA (US);
Steven D. Woodruff, Morgantown, WV (US);
University of Pittsburgh—Of the Commonwealth System of Higher Education, Pittsburgh, PA (US);
Abstract
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.