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:
Apr. 07, 2015
Filed:
Feb. 03, 2012
Robert J. Levis, Rose Valley, PA (US);
Johanan H. Odhner, Huntingdon Valley, PA (US);
Robert J. Levis, Rose Valley, PA (US);
Johanan H. Odhner, Huntingdon Valley, PA (US);
Temple University —Of The Commonwealth System of Higher Education, Phila., PA (US);
Abstract
In apparatus and methods of Raman spectroscopy in air, a target region is excited by a laser pump pulse exceeding the critical power for self-focusing in air and having a duration after self-focusing of 15 fs or less. A laser probe pulse having a duration in the range of 200 fs to 100 ps and an energy of at least 20 μJ is directed at the excited target region. Stimulated Raman scattering from the interaction between the excited target region and the laser probe pulse is detected. The target region can be outside the spectrometer, with ambient air in between used for the self-focusing.