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:
May. 16, 2006
Filed:
Dec. 12, 2001
Kevin K. Lehmann, Lawrence, NJ (US);
Peter B. Tarsa, Duxbury, MA (US);
Paul Rabinowitz, Bridgewater, NJ (US);
Kevin K. Lehmann, Lawrence, NJ (US);
Peter B. Tarsa, Duxbury, MA (US);
Paul Rabinowitz, Bridgewater, NJ (US);
Trustees of Princeton University, Princeton, NJ (US);
Abstract
An apparatus for detection and measurement of trace species in a gas or liquid sample. A ring down cell formed from a fiber optic ring is exposed to the sample gas or liquid. A coherent source emits radiation into the fiber optic ring, which in turn is received at an output thereof. The fiber optic ring has a portion thereof, between the input and output, exposed to the sample gas or sample liquid. A processor is coupled to the receiver and determines the level of trace species in the gas or liquid sample based on the rate of decay of the radiation within the fiber optic ring.