Rapid developments in near-IR filter and detector technology have resulted in FT-Raman spectroscopy emerging as a powerful technique in both research and analytical laboratories. The more recent advances in FT-Raman instrumentation now emphasize the optimization of different sampling accessories, including microsampling techniques. Microscopes attached to conventional Raman spectrometers operating at visible wavelengths have already proven to be applicable to many problems of chemical analysis. However, the optimized combination of an optical microscope and a near-IR FT-Raman spectrometer currently enables the analysis of very small samples which would normally fluoresce with visible excitation. Such samples include polymer fibers and thin films, dyes on fabrics, and small biological samples.In FT-Raman microscopy, the microscope is coupled to the near-IR FT-Raman spectrometer via fiber optic cables. These cables transfer the Nd:YAG laser beam from the spectrometer to the microscope, and channel the scattered light back again to be modulated by the interferometer and measured by the high sensitivity near-IR detector.