Solid-state laser Fourier-Transform Raman Spectrometer

A Fourier Transform Raman Spectrometer system comprising:

• a folded V laser cavity comprising a first leg defined by a highly reflective end mirror and a dichroic fold mirror and a second leg defined by said fold mirror and an output coupler, said cavity including an optical path therethrough;
• a solid-state laser gain medium disposed in said optical path in said first leg of said cavity;
• a pump source disposed outside said cavity and aligned with said fold mirror and said optical path in said first leg of said cavity;
• a tuneable filter comprising an acousto-optic device disposed outside said cavity along said optical path and positioned so as to intersect an output beam from said second leg of said cavity;
• means for tuning said tunable filter to a narrow band of colors around a selected laser emission line of radiation from said laser;
• means for disposing a sample to be analyzed in a path of said output beam from said tuneable filter;
• and
• a Raman Spectrometer positioned to receive light scattered from said sample.