METHODS AND SYSTEMS FOR COHERENT MULTIDIMENSIONAL SPECTROSCOPY

摘要

A method for coherent multidimensional spectroscopy may comprise illuminating a location in a sample with a set of m coherent light pulses, each coherent light pulse having an initial frequency ωm and an initial wave vector {right arrow over (k)}m, wherein m≥2, to generate a coherent output signal having an initial frequency ωoutput=Σ±ωm and an initial wavevector wave vector {right arrow over (k)}output=Σ±{right arrow over (k)}m; scanning a first coherent light pulse of the set of m coherent light pulses across a set of i frequency values, wherein i≥2, the set of i frequency values including the first coherent light pulse having initial frequency ω1; scanning, simultaneously, a second coherent light pulse of the set of m coherent light pulses across a set of i correlated frequency values, the set of i correlated frequency values including the second coherent light pulse having initial frequency ω2, wherein each correlated frequency value is associated with a corresponding frequency value of the set of i frequency values as a correlated frequency grouping; and detecting the coherent output signal. Each correlated frequency value is selected so that the coherent output signal generated at each correlated frequency grouping equals the initial frequency ωoutput and the coherent output signal generated at each correlated frequency grouping equals the initial wavevector {right arrow over (k)}output.