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:
Oct. 03, 2006
Filed:
Oct. 31, 2003
Barbara A. Paldus, Sunnyvale, CA (US);
Alexander Katchanov, Sunnyvale, CA (US);
Robert Lodenkamper, Sunnyvale, CA (US);
Barbara A. Paldus, Sunnyvale, CA (US);
Alexander Katchanov, Sunnyvale, CA (US);
Robert Lodenkamper, Sunnyvale, CA (US);
Picarro, Inc., Sunnyvale, CA (US);
Abstract
An apparatus for cavity enhanced optical detection having an improved flow cell is provided. Sensitivity of the cavity resonance condition to changes in refractive index of an analyte flowing through the flow cell is reduced. More specifically, the round trip optical path defined by the resonant cavity intersects a curved cavity input mirror at a point. This point has a location on the input mirror that is substantially independent of the refractive index of the analyte. In this manner, changes in sample refractive index do not lead to misalignment of the resonant optical cavity.