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Two-dimensional fourier transform spectrometer

United States Patent

October 25, 2016
View the Complete Patent at the US Patent & Trademark Office
The present invention relates to a system and methods for acquiring two-dimensional Fourier transform (2D FT) spectra. Overlap of a collinear pulse pair and probe induce a molecular response which is collected by spectral dispersion of the signal modulated probe beam. Simultaneous collection of the molecular response, pulse timing and characteristics permit real time phasing and rapid acquisition of spectra. Full spectra are acquired as a function of pulse pair timings and numerically transformed to achieve the full frequency-frequency spectrum. This method demonstrates the ability to acquire information on molecular dynamics, couplings and structure in a simple apparatus. Multi-dimensional methods can be used for diagnostic and analytical measurements in the biological, biomedical, and chemical fields.
DeFlores; Lauren (Cambridge, MA), Tokmakoff; Andrei (Lexington, MA)
Massachusetts Institute of Technology (Cambridge, MA)
13/ 955,158
July 31, 2013
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH This invention was supported by grants from the National Science Foundation (CHE-0616575) and the U.S. Department of Energy (DE-FG02-99ER14988). The U.S. Government has certain rights in the invention.