Combined fiber-optic absorption and emission measurement apparatus
AssigneeUniversity of South Florida
InventorNicholas Djeu
Life of this patent
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Abstract
Disclosed is a spectroscopic system having a fiber-optic probe for simultaneous IR and Raman measurement. The probe includes a single strand of optical fiber, such as sapphire which is suitable for IR absorption measurements as far as 4 μm and Raman excitation at wavelengths as short as 300 nm. The probe is immersed in the sample and functions in the evanescent wave mode for both IR absorption and Raman scattering measurements. The sensing system makes possible the synergistic, and simultaneous, analysis of both IR and Raman data in an integrated device.
Claims34
A spectroscopic system comprising:
- a fiber-optic probe, comprising an optical fiber having a first end and a second end, adapted to be placed in a fluid sample;
- a first light source optically coupled to the first end of the optical fiber;
- a second light source optically coupled to the first end of the optical fiber;
- a first spectral analyzer optically coupled to the at least one end of the optical fiber;
- and
- a second spectral analyzer optically coupled to the second end of the optical fiber.
A method of simultaneously measuring absorption and induced emission in a fluid sample, comprising;
- placing a fiber-optic probe, comprising an optical fiber having a first end and a second end, in the fluid sample;
- introducing light from a first light source through the first end of the optical fiber into the sample;
- introducing light from a second light source through the first end of the optical fiber into the sample;
- measuring the light from the first light source emitted by the first or second end of the optical fiber, with a first spectral analyzer;
- and
- measuring the light from the second light emitted by the second end of the optical fiber, with a second spectral analyzer.
Dependencies are inferred from the claim text.