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:
Nov. 15, 2022
Filed:
Feb. 16, 2021
Applicant:
Picarro, Inc., Santa Clara, CA (US);
Inventors:
Serguei Koulikov, Los Altos, CA (US);
Alejandro Dario Farinas, Mountain View, CA (US);
Assignee:
Picarro. Inc., Santa Clara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01J 3/42 (2006.01); G01J 3/12 (2006.01); G01J 3/02 (2006.01);
U.S. Cl.
CPC ...
G01J 3/42 (2013.01); G01J 3/021 (2013.01); G01J 3/0218 (2013.01); G01J 3/12 (2013.01); G01J 2003/1291 (2013.01);
Abstract
Noise in cavity enhanced spectroscopy due to higher order mode excitation in a resonant cavity is reduced. There are two main points. The first point is that the source and detector are both fiber coupled, to provide the spatial filtering and other general advantages of fiber coupling. The second point is that the cavity is designed to ensure sufficient separation in frequency between the desired TEMmode and the first few higher order spatial modes.