Some new uses for filtered fiber-optic Raman probes: In situ drug identification and in situ and remote Raman imaging

The use of a commercially available filtered fiber-optic Raman probe is dis cussed for the in situ identification of illicit drugs. This probe is also shown to be useful for remote Raman measurements in a collimated beam geome try. Fiber-optic Raman imaging is discussed using single small-diameter ima ge guides and also image guides with attached imaging GRIN lenses. Finally, a demonstration of remote Raman imaging is presented using a simple modifi cation of the same commercially available Raman probe that was used for ill icit drug measurements. Copyright (C) 1999 John Whey & Sons, Ltd.