Coherent photothermal interferometric spectroscopy system and method for chemical sensing
AssigneeCeLight, Inc.
InventorsIsaac Shpantzer, Jacob B. Khurgin, Pak Shing Cho, Yaakov Achiam
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AssigneeCeLight, Inc.
InventorsIsaac Shpantzer, Jacob B. Khurgin, Pak Shing Cho, Yaakov Achiam
Estimating the term…
A photo-thermal, interferometric spectroscopy system is disclosed that provides information about a chemical at a remote location. A first light source assembly is included that emits a first beam. The first beam has one or more wavelengths that interact with the chemical and change a refractive index of the chemical. A second light source produces a second beam. The second beam interacts with the chemical resulting in a third beam with a phase change that corresponds with the change of the refractive index of the chemical. A detector system is positioned remote from the chemical to receive at least a portion of the third beam. The detector system provides information on a phase change in the third beam relative to the second beam that is indicative of at least one of, absorption spectrum and concentration of the chemical.
A photo-thermal, interferometric spectroscopy system that provides information about a chemical at a remote location, comprising:
A method for determining information about a chemical at a remote location, comprising:
Another embodiment of the method 47, wherein the second beam includes of least a first branch and a second branch, the first branch being directed into a volume that contains the chemical and the second beam is directed to a position external to the chemical.
Dependencies are inferred from the claim text.