Remote sampling using a fibre-optic probe in fourier transform Raman spectroscopy

Fourier transform Raman spectroscopy has been carried out remote from the instrumentation using fibre-optic probes. The quality of the data is good; the measured signal-to-noise ratios from spectra obtained using a conventional sampling arrangement are better only by a factor of ca. 5. The choice of fibre-optic material and grade is crucial to the success of this work. Two different fibres have been tested and compared. Technical improvements are discussed.