Two-dimensional fourier transform spectrometer

摘要

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.

主权项

1. A method of measuring a spectrum having a plurality of dimensions comprising:
coupling a collinear sequence of light pulses onto a medium; coupling an optical signal onto the medium, the optical signal being modulated by the sequence of light pulses to form a modulated light signal; detecting the modulated light signal to provide spectral data; and forming a spectral representation from the spectral data having a plurality of dimensions.