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Modulation cancellation method (MOCAM) in modulation spectroscopy

详细技术说明

A sensitive technique for isotopic composition characterization.

*Abstract

Technology
The invention is a new process to acquire analytical spectral data using two optical sources. It is based on balancing the optically excited response of the analyzed media for certain conditions. As a result, small deviations from these conditions (such as a chemical or isotopic composition of the medium) can be detected with high sensitivity.

Advantages
This technique allows one to directly monitor the deviation of the spectroscopic parameters of the analyzed sample from the parameters of the reference sample. Existing techniques require calculation of such a small deviation as a difference of two large numbers. Consequently, MOCAM results in higher measurement accuracy, or reaches the same accuracy levels as existing techniques that require more sophisticated equipment.

Potential Applications
The first intended application of the invention is the isotopic composition characterization by means of Photoacoustic spectroscopy (PAS). MOCAM is also envisioned to be used for detection of broadband absorbers using PAS. MOCAM can be applied for precise chemical composition monitoring of process gases in industry.

The Inventors 
Anatoliy Kosterev is a Senior Faculty Fellow in the Department of Electrical and Computer Engineering at Rice University.
Robert Curl is a Professor in the Department of Chemistry at Rice University.

Availability
This technology is available for license from Rice University.
A utility patent (12/089,692) has been filed with the USPTO.

Inquiries

Nila Bhakuni
713-348-6231
bhakuni@rice.edu

国家/地区

美国