It is known that micro-Raman spectroscopy is a powerful technique for the characterization of diamond:it is fast,non-destructive and requires no special preparation of the samples.The Raman parameters such as intensity,width,peak frequency and polarization of the diamond line,as well as the presence of other signals,provide fruitful information on the structural and,in some cases on the electronic properties of the samples.Moreover,recent improvements in the implementation of the technique make Raman spectroscopic imaging possible.Different systems have been developed to reduce recording and display times to reasonable levels,and it is now technically possible to produce Raman images with spatial resolution better than 1 mum within some hours.
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