Multi-dispersive spectrometer

A method of obtaining a Raman spectrum from a sample, the method comprising:

• directing an excitation signal from an excitation light source toward a sample;
• receiving a spectroscopy signal from the sample;
• and
• directing the spectroscopy signal toward a detector, wherein the spectroscopy signal is moved relative to at least one sensor of the detector to provide a plurality of discrete shifted spectroscopy signals without the use of multiple lasers or a tunable laser adapted to change an excitation signal wavelength for a plurality of the discrete shifted spectroscopy signals,
• wherein data from each of the plurality of discrete shifted spectroscopy signals is superimposed to create a vector.

A method of determining a Raman spectroscopy signal, the method comprising:

• obtaining a plurality of discrete spectra corresponding to a plurality of discrete shifts within an optical system of a Raman spectrometer without the use of multiple lasers or a tunable laser adapted to change an excitation signal wavelength for a plurality of the discrete shifted spectroscopy signals;
• superimposing data from each of the plurality of discrete shifted spectroscopy signals to create a vector;
• building a mathematical matrix operator;
• and
• using the mathematical matrix operator to solve a linear problem.