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. 19, 2020
Filed:
Jun. 06, 2017
The Trustees of Princeton University, Princeton, NJ (US);
Genevieve Plant, Princeton, NJ (US);
Yifeng Chen, Princeton, NJ (US);
Gerard Wysocki, Princeton, NJ (US);
THE TRUSTEES OF PRINCETON UNIVERSITY, Princeton, NJ (US);
Abstract
A sensitivity boosted laser dispersion spectroscopy system for sensing a sample in a sample cell or in an open path crossing the sample. The system includes a local oscillator arm and a sample arm containing the sample cell or the open path crossing the sample. A laser source is configured to generate a first light beam directed along the sample arm and a second light beam, the second light beam being frequency shifted and directed along the local oscillator arm. An intensity modulator/phase modulator/frequency shifter is disposed in the sample arm configured to generate a multi-frequency beam having known frequency spacing which is then passed through the sample cell to generate a sample arm output. A beam combiner is configured to combine the sample arm output and the second light beam from the local oscillator arm and generate a combined beam. A photodetector is configured to detect the combined beam for sensing the sample in the sample cell.